Artykuły w czasopismach na temat „Fertilizers, Fertilizer Application”
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R.Z. Margate, J.N. Maravilla, R.M. Ebuna i M.N. Eroy. "RESPONSE OF COCONUT AND COFFEE TO FERTILIZERS APPLIED ON EITHER OR BOTH CROPS IN AN INTERCROPPING SYSTEM". CORD 10, nr 02 (1.12.1994): 34. http://dx.doi.org/10.37833/cord.v10i02.282.
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A study to assess the effects of fertilizer application on either coconut or coffee or both, in an intercropping system was conducted from 1985 to 1991. at the Davao Research Center, Mindanao, Philippines. The coconuts were planted at 8 m x 8 m square system.
Fertilizer application on coconut intercropped with either fertilized or unfertilized coffee increased copra yield significantly. A very slight increase in copra per nut was noted on un‑fertilized coconut even with fertilized coffee intercrop indicating coconut did not benefit from the fertilizers applied on coffee. Bean yield of fertilized coffee was increased significantly by 202 percent under fertilized or unfertilized coconuts. But yield of unfertilized coffee did not increase even under fertilized coconut. There is a need to apply fertilizers separately to both crops.
Economic analysis revealed that fertilizer application to both coconut and coffee gave the highest net return, followed by fertilizer application on coffee alone.
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Kai, Takamitsu, i Dinesh Adhikari. "Effect of Organic and Chemical Fertilizer Application on Apple Nutrient Content and Orchard Soil Condition". Agriculture 11, nr 4 (10.04.2021): 340. http://dx.doi.org/10.3390/agriculture11040340.
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Apple cultivation in Japan typically involves the use of chemical fertilizers and pesticides which can damage the environment. Therefore, in this study we investigated the orchard soil biochemical characteristics as well as the fruit nutrient contents, and pesticide residues of apples grown either organically (organic fertilizers + reduced pesticides) or with conventional chemical fertilizers and pesticide rates. Compared with conventional chemical fertilizer treatment, the organic fertilizer treatment produced fruit with significantly higher contents of sugar, as well as soil with higher total carbon, total nitrogen, and total phosphorus. There were also significantly greater soil bacterial biomass and N circulation in the organically fertilized treatments. Minimal pesticide residues were detected in the organically fertilized fruits, but in the apples cultivated with conventional rates of fertilizers and pesticides there were significantly higher levels of propargite that was used to control spider mites. These residue levels from the conventionally fertilized orchards exceeded European and Codex residue standards. These results indicate that environmentally friendly arboricultural soil management practices, such as organic fertilizer and reduced pesticide cultivation can enhance nutrient cycling in soil, reduce the burden on the environment, and promote food safety and security.
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Kopiński, Jerzy, i Wioletta Wrzaszcz. "MANAGEMENT OF NATURAL FERTILIZERS IN POLAND". Annals of the Polish Association of Agricultural and Agribusiness Economists XXII, nr 2 (15.04.2020): 80–87. http://dx.doi.org/10.5604/01.3001.0014.1102.
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The study discusses the results of the analysis of changes in the management of natural fertilizers in Poland and voivodships. Analysis included changes in: the number and percentage of individual farms using natural fertilizer, fertilized area, and level of consumption of particular fertilizer types. The comparative analysis at a voivodship level concerned the years 2007 and 2016. The current situation with regard to fertilized area and natural fertilizer rates was also assessed on the basis of Statistics Poland data from the years 2018-2019. The results of analyses indicated that the number of farms using natural fertilizers in Poland has clearly decreased. Despite observing an increase in the interest in slurry application, the most popular natural fertilizer applied is still manure, which, in the years 2018-2019, was applied on 18% of utilized agricultural area. In Poland, the average annual rates of applied manure, liquid manure and slurry are, respectively 17 t/ha, 22 m3/ha and 26 m3/ha. An analysis of the organization and intensity of natural fertiliser management in the Podlaskie Voivodeship shows that this is the leading region in this aspect, which confirms its dominant position in livestock production in Poland.
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HU, CHENG, SHUANG-LAI LI, YAN QIAO, DONG-HAI LIU i YUN-FENG CHEN. "EFFECTS OF 30 YEARS REPEATED FERTILIZER APPLICATIONS ON SOIL PROPERTIES, MICROBES AND CROP YIELDS IN RICE–WHEAT CROPPING SYSTEMS". Experimental Agriculture 51, nr 3 (18.11.2014): 355–69. http://dx.doi.org/10.1017/s0014479714000350.
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SUMMARYLong-term fertilization experiment has been conducted since 1981 to study the effect of soil management practices on soil fertility, soil carbon and nitrogen sequestration, soil culturable microbe counts and crop yields at the Nanhu Experimental Station in the Hubei Academy of Agricultural Sciences (situated in the middle reach of the Yangtze River and the rice–wheat cropping system). The experiment was designed with the following eight treatments: (1) unfertilized treatment: Control; (2) inorganic nitrogen fertilizer treatment: N; (3) inorganic nitrogen plus inorganic phosphorus fertilizer treatment: NP; (4) inorganic nitrogen, inorganic phosphorus plus inorganic potassium fertilizer treatment: NPK; (5) pig dung compost (manure) treatment: M; (6) inorganic nitrogen fertilizer plus manure: NM; (7) inorganic nitrogen, inorganic phosphorus fertilizer plus manure treatment: NPM and (8) inorganic nitrogen, inorganic phosphorus, inorganic potassium fertilizer plus manure treatment: NPKM. The results showed that long-term application of organic manure in combination with inorganic fertilizer significantly (p < 0.05) increased soil organic C concentrations compared with the corresponding inorganic fertilizers alone. Soil organic C contents were significantly (p < 0.05) increased in balanced application of NPK fertilizers in comparison to unbalanced application of fertilizers. After 30 years of experiment, soil organic C and total N sequestration rate averagely were 0.48 t ha−1 year−1 and 28.3 kg ha−1 year−1 in the fertilized treatments respectively; nevertheless, it were 0.27 t ha−1 year−1 and 9.7 kg ha−1 year−1 in the unfertilized treatment. Application of organic fertilizer in combination with inorganic fertilizer significantly (p < 0.05) increased culturable microbial counts compared with the corresponding inorganic fertilizers alone. The balanced application of NPK fertilizers significantly (p < 0.05) increased culturable microbial counts compared with unbalanced application of fertilizers. The average grain yield of wheat and rice was significantly (p < 0.05) higher in organic manure combined with inorganic fertilizer treatment than in inorganic fertilizer alone and unfertilized control. Therefore, long-term application of organic manure combined with inorganic fertilizer and balanced application of NPK fertilizers could increase soil organic C and total N sequestration, culturable microbial counts and crop grain yields.
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Naumetov, R. V. "THE EFFECTIVENESS OF THE USE OF COMPLEX FERTILIZERS ON THE YIELD AND GRAIN QUALITY OF SPRING WHEAT, BARLEY AND WINTER RYE". Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. Agricultural Sciences 1, nr 2 (2022): 56–61. http://dx.doi.org/10.37313/2782-6562-2022-1-2-56-61.
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The research was comparative estimation of the effectiveness of the application of compound fertilizers monoammonium phosphate, nitroammofosa and double superphosphate at sowing in rows on the productivity and the quality of the grain production of spring wheat , barley and winter rye on fertilizer and fertilized background. Research findings suggest that the introduction of double superphosphate in rows during sowing grain on soils with a high content of phosphorus in the background without nitrogen fertilizer inefficiently. The introduction of complex fertilizers in rows at crop fertilizer more effectively at the background. Row fertilizer has a positive impact on the quality of the grain. The most high-quality grain is formed by the rows of compound fertilizers (nitroammofosa).
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Pacumbaba, R. P., G. F. Brown i R. O. Pacumbaba. "Effect of Fertilizers and Rates of Application on Incidence of Soybean Diseases in Northern Alabama". Plant Disease 81, nr 12 (grudzień 1997): 1459–60. http://dx.doi.org/10.1094/pdis.1997.81.12.1459.
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Field incidence of soybean stem canker (SSC), Phytophthora root rot (PRR), bacterial blight of soybean (BBS), soybean mosaic virus (SMV), and soybean cyst nematode (SCN) females on soybean cultivar Bragg were compared under complete (20-20-20), ammonium nitrate (34-0-0), superphosphate (0-46-0), and muriate of potash (0-0-60) fertilizers, and rate regimes with unfertilized controls on Decatur silty clay loam (Rhodic paleudult) in northern Alabama. Plants fertilized with muriate of potash had higher incidence of PRR and SMV. Plants fertilized with complete fertilizer had the lowest incidence of PRR and SMV, and the highest yield. Both complete and superphosphate fertilizers lowered the incidence of SMV at application rates from 0 to 100 kg/ha, then increased up to 200 kg/ha. Ammonium nitrate fertilizer had no effect on incidence of SMV. The incidence of BBS and the number of SCN females were not affected by either type of fertilizers or rate of application. Application rates of any of the four fertilizers reduced incidence of SSC. It is recommended to use only complete fertilizer to increase yield and reduce field incidence of PRR, SMV, and SSC.
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Minh, Vo Quang, Le Van Khoa i Nguyen Thi Phuong Dai. "Rice Yield Improvement by Sugarcane Filter Cake Fertilizer Application in the Protected Dyke". International Journal of Agronomy 2023 (10.02.2023): 1–8. http://dx.doi.org/10.1155/2023/6811132.
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This study was carried out to evaluate the fertility of rice soil and the effect of inorganic fertilizers combined with sugarcane filter cakes on rice yield in a protected dike area in Cho Moi district, An Giang province. The experiment consists of 4 treatments, and the dose of fertilizer in each treatment is (1) controlled according to the farmers’ dosage (224 kg N + 148 kg P2O5 ha−1), (2) fertilize according to farmers + 6 tons/ha of cow manure composted with straw, (3) fertilizer according to farmers + 6 tons/ha of cow manure composted 15 cm deep, and (4) fertilize according to farmers + 2 tons/ha of organic fertilizer with sugarcane filter cakes. By analyzing the nutrient content of soil samples, it was found that inorganic fertilizers in combination with sugarcane residues improved soil fertility as reduced soil acidity and electrical conductivity, and increased organic matter, total nitrogen content, and exchangeable K. In addition, exchange and enriched exchangeable Mg achieved the highest rice yield, a statistically significant difference compared with organic fertilizer treatment with straw compost and inorganic fertilizer. However, the content of total P, available P, exchangeable Na, and Ca have not improved significantly. Therefore, applying inorganic fertilizers combined with sugarcane filter cakes is an excellent measure to help improve the supply of nutrients from the soil and increase rice yield in the dike land.
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Rodrigues, Donizetti Tomaz, Roberto Ferreira Novais, Víctor Hugo Alvarez V., José Maria Moreira Dias i Ecila Mercês de Albuquerque Villani. "Orchid growth and nutrition in response to mineral and organic fertilizers". Revista Brasileira de Ciência do Solo 34, nr 5 (październik 2010): 1609–16. http://dx.doi.org/10.1590/s0100-06832010000500014.
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Orchid fertilization is fundamental for a satisfactory plant growth and development for commercial orchid production as well as in collections. Mineral and/or organic sources can be used for fertilization. The objective of this study was to evaluate the effect of the use of organic and/or mineral fertilizers on the nutrition and growth of orchid (Laelia purpurata 'werkhanserii' x L. lobata 'Jeni') seedlings in greenhouse. The following fertilizers were tested: an NPK fertilizer + micronutrients; a Ca source in the form of calcium nitrate; two organic fertilizers, one prepared with a mixture of bone meal, castor meal and ash, and a similar commercial fertilizer. The organic fertilizers were distributed on the surface of the pots every two months and the minerals were applied weekly to the substrate in 25 mL aliquots of a solution containing 1 g L-1 of the respective fertilizer. The plant response to the application of mineral together with organic fertilizer was better, with higher dry matter production than by the isolated application of each fertilizer (organic or mineral). The treatments with calcium nitrate + NPK fertilizer did not differ significantly from the use of NPK fertilizer, probably due to the S deficiency detected in a mineral analysis of the tissues. Commercial organic fertilizer had a very elevated B level, leading to toxicity symptoms, reduced growth and necrotized tips of the older leaves in all fertilized treatments.
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Susilowati, Lolita Endang, i Bambang Hari Kusumo. "Sosialisasi Pemupukan Berimbang Spesifik Lokasi Untuk Tanaman Jagung Di Kabupaten Dompu". Jurnal Gema Ngabdi 1, nr 3 (29.11.2019): 103–8. http://dx.doi.org/10.29303/jgn.v1i3.21.
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Farmers' understanding of how to fertilize efficiently and effectively is not yet fully mastered. Most farmers often fertilize crops beyond the recommended dosage. This community service aims to (1) increase farmers' understanding and knowledge of the quality of fertilizers and balanced fertilization technology to achieve the use of fertilizers that are relatively efficient, (2) disseminating balanced fertilization technology with the correct rules. This activity was started with an explanation of fertilizer and balanced fertilization technology, then continued with a balanced fertilization demonstration in Mumbu Village, Woja Subdistrict Dompu District in the planting season of MK 1 in 2018. As the target partner was the Bina Baru Farmer group, Mumbu Village, Woja Subdistrict, Dompu District and as a working partner is a local agricultural extension agent (PPL). The community service team acts as a facilitator, while the local PPL is tasked with assisting the farmers' demonstration activities. This community service activity uses a participatory approach starting from the beginning to the end of the activity in making decisions. The results of community service activities show as follows (1) there is an increase in farmers' understanding of the quality of fertilizers and determination of fertilizer application based on fertilizer quality in applying the site-specific balanced fertilization concept and (2) mastering the application of balanced fertilizer application technology with the 5 T. rule. The application of proven balanced fertilization technology can increase yields from 9 tons per ha (how to fertilize farmers) to 12 tons per ha
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Kuzin, Andrei, Alexei Solovchenko, Ludmila Stepantsova i Grigory Pugachev. "Soil fertility management in apple orchard with microbial biofertilizers". E3S Web of Conferences 222 (2020): 03020. http://dx.doi.org/10.1051/e3sconf/202022203020.
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Intensification of horticulture in Russia involves planting of new high-density orchards with drip irrigation and fertigation as well as intensification of the exploitation of traditional orchards. This approach involves an increase in mineral fertilizer application imposing the risk of soil fertility loss. For several reasons, the use of traditional organic fertilizers like manure in orchards is currently marginal. Although bacteria-based biofertilizers cannot substitute mineral fertilizers completely, they can significantly reduce the need for mineral fertilizer application. The effect of microbial biofertilizers of the brands “Azotovit” (Azotobacter chroococcum), “Phosphatovit” (Bacillus mucilaginosus), as well as a mixture of bacteria and the fungus, “Organic” (Azotobacter chroococcum, Bacillus subtilis, Bacillus megaterium, Trichoderma harzian) was studied in two field experiments. In the experiment #1, the preparations “Azotovit” and “Phosphatovit” were delivered through a drip irrigation system in various combinations with mineral fertilizers. In experiment #2, the preparation “Organic” was also applied to the soil with irrigation water, also in combination with the mineral fertilizer. When solely applied, none of the studied preparations changed significantly the soil nutrient content and yield as compared with the variant fertilized by the mineral fertilizer at the maximum studied application rate. The combination of the microbial biofertilizer and mineral fertilizers applied at a low rate ensured the yield commensurate to that obtained under high-rate application of the mineral fertilizer.
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Da Silva Do Reis, Sírio Douglas, Marco Antonio Previdelli Orrico Junior, Michely Tomazi, Stéfane Souza Cunha, Ana Carolina Amorim Orrico, Joyce Pereira Alves i Edgar Salvador Jara Galeano. "Is organic fertilizer application a viable alternative to synthetic fertilizer for Piatã grass?" Tropical Grasslands-Forrajes Tropicales 9, nr 3 (30.09.2021): 300–306. http://dx.doi.org/10.17138/tgft(9)300-306.
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Organic fertilizer in many cases can replace mineral fertilizers and in consequence reduce production costs and improve soil quality. Thus, the aim of this work was to evaluate productive, morphogenic and structural characteristics of Piatã grass (Urochloa brizantha) fertilized with urea, organic compost and biofertilizer throughout a year. The trial design was a block split-plot in time (seasons) design with 4 treatments (fertilizing with urea, organic compost, biofertilizer and Control) and 6 repetitions. The evaluated parameters were: dry matter production (DMP), leaf elongation rate (LER), leaf appearance rate (LAR), phyllochron (PHYL), leaf lifespan (LLS), pseudostem elongation rate (SER), final leaf length (FLL), number of live leaves (NLL) and number of tillers (NT). The highest LAR values were observed during summer and spring for the treatment with urea, which also produced the highest LER values. No difference was found in SER among the fertilizer treatments but all fertilized treatments were superior to Control. NT and DMP values were highest (P<0.05) in the treatment with urea, followed by biofertilizer, organic compost and Control. In conclusion, while the use of urea provided greatest forage production, applying biofertilizer gave superior yields to organic compost. Other benefits of organic fertilizers should be assessed as well as combinations of organic and inorganic fertilizers.
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Richards, J. E., J. Y. Daigle, P. LeBlanc, R. Paulin i I. Ghanem. "Nitrogen availability and nitrate leaching from organo-mineral fertilizers". Canadian Journal of Soil Science 73, nr 2 (1.05.1993): 197–208. http://dx.doi.org/10.4141/cjss93-022.
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Greenhouse, field and laboratory studies were conducted to determine if N availability to corn (Zea mays L.) and NO3 leaching were affected by encapsulating conventional granular fertilizer within peat pellets (organo-mineral fertilizers or OMF). In the greenhouse, total N uptake by three 6-wk crops of corn from soil fertilized with NH4NO3 was 9.1% higher than the mean from soils fertilized with OMF made with urea (OMF-urea) or with NH4NO3 (OMF-AN). Total N uptake was 5.1% higher from soils fertilized with OMF-AN than OMF-urea. Differences in total N uptake among the fertilizers were constant across crops. In two field trials, total N uptake was slightly higher (4%) from soil fertilized with commercial NH4NO3 than with OMF-AN. In a laboratory experiment, NO3 from commercial NH4NO3 fertilizer leached more readily from soil than NO3 from OMF-AN. Approximately 95% of the NO3 from commercial NH4NO3 fertilizer leached from 3-cm soil cores in the first 50 mL of leachate whereas only 26% of the NO3 contained in OMF-AN leached. In another trial, NO3 from commercial NH4NO3 fertilizer leached more deeply than NO3 from OMF-AN after application of 2.5 cm irrigation water to soil in 63-cm leaching columns. Virtually no NO3 was retained within the OMF-AN pellet after leaching, suggesting that the retention of NO3 by OMF-AN used in our work is of limited duration. The OMF is an effective source of N to crops and is less prone to NO3 leaching losses than commercial NH4NO3 fertilizer when rain occurs soon after application. More work is required to determine the effect of pellet size and composition on NO3 retention, NO3 leaching losses and crop availability of N. Key words: Nitrate leaching, corn, organo-mineral fertilizers
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Yusnaini, Sri. "Existing of Vesicular Arbuscular Mycorrhizal on The Corn Field Subjected by Long-term Organic and Inorganic Fertilizers". JOURNAL OF TROPICAL SOILS 14, nr 3 (1.09.2009): 253. http://dx.doi.org/10.5400/jts.2009.v14i3.253-260.
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Existing of vesicular arbuscular mycorrhizal fungi were investigated in continuously cropped, conventional agro ecosystems which had received annual long-term (4 years) amendments of either manure or inorganic fertilizer. The systems had an identical 4–year crops rotation and differed essentially only in the amount and type of fertilizer supplied. Experiment was setup at Taman Bogo, in the vicinity of Probolinggo, East Lampung. The eight farming systems differed mainly in fertilization application. The organic systems were fertilized exclusively with chicken manure (CK), and green manure Glyricidium sp. (GM) 20 Mg ha-1. One conventional system was fertilized with the inorganic fertilizers (IF) (urea 300 kg ha-1, SP 36 200 kg ha-1, and KCl 100 kg ha-1). Four proportion combination fertilized organic and inorganic fertilizers i.e combination of 50% CK + 50% IF, 50% GM + 50% IF, 75% CK + 25% IF, and 75% GM + 25% IF. Application of chicken manure both exclusively or combination with inorganic fertilizer gave the higher AMF spore number and root colonization than others treatment. The dominant species of AMF at all treatment was Glomus constrictum.
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N’Dayegamiye, Adrien. "Response of silage corn and wheat to dairy manure and fertilizers in long-term fertilized and manured trials". Canadian Journal of Soil Science 76, nr 3 (1.08.1996): 357–63. http://dx.doi.org/10.4141/cjss96-043.
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Silage corn (Zea mays L.) and wheat (Triticum aestivum L.) were grown (1987–1991) in trials that had been manured and fertilized since 1978 to evaluate the effects of annual N, P, K and Mg fertilizers and dairy cattle manure on yields and nutrient uptake. Manure as the main factor was applied at 0 and 20 Mg ha−1 on a wet-weight basis. The subplots consisted of six fertilizer treatments: NK, PK, NP, NPK, NPKMg and the unfertilized control. For silage corn, fertilizer rates were 150, 100, 150 and 40 kg ha−1 N, P2O5, K2O and Mg, respectively. Fertilizer rates for wheat were 80, 100, 120 and 40 kg ha−1 N, P2O5, K2O and Mg, respectively. In manured plots, reduced N rates were applied for silage corn (100 kg N ha−1) and wheat (50 kg N ha−1). Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited. A N-K synergistic effect on yields and nutrient uptake was observed both for silage corn and wheat. Application of K fertilizer significantly reduced silage corn Mg uptake without limiting yields, while it increased wheat yields and Mg uptake. Reduced N rates applied to silage corn and wheat achieved maximum yields and nutrient uptake in long-term manured treatments. Crop response to fertilizer application varied with crop species and was higher for silage corn than for wheat. Fertilizer adjustment is necessary after a long-term fertilizer or manure application. Key words: Silage corn, wheat, yields, nutrient uptake, manure, fertilizers, long-term, response to fertilizers
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Driessche, R. van den. "Nursery growth of conifer seedlings using fertilizers of different solubilities and application time, and their forest growth". Canadian Journal of Forest Research 18, nr 2 (1.02.1988): 172–80. http://dx.doi.org/10.1139/x88-027.
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Douglas-fir (Pseudotsugamenziesii (Mirb.) (Franco) and white spruce (Piceaglauca) (Moench) Voss) seedlings were grown in a bare-root nursery for two growing seasons with one of four fertilizers, Osmocote (17-7-12) (OSM), ammonium phosphate (11-55-0) (AMP), ammonium sulphate (21-0-0) (AMS), or Hi-Sol (20-20-20) (HIS), each supplying one of three levels of N: 0, 210, or 350 kg N ha−1, at two different frequencies throughout the growing seasons. Fertilizers, levels, and frequencies were arranged in a factorial design and replicated in three blocks on each species. Additionally, Douglas-fir seedlings that had been grown for two seasons without fertilization were treated with the same amounts, as supplied over two seasons, of AMP, AMS, and HIS between 1 September and 20 October, as a late-season treatment. After two seasons, mean dry weight differences due to fertilizers were, for Douglas-fir seedlings: AMP > AMS > HIS = OSM, and for white spruce seedlings: AMS = AMP > HIS > OSM. Dry weight was increased by increasing level of fertilizer. Fertilization increased shoot growth compared with root growth and resulted in seedlings having more dry matter in stems and less in needles at the end of two seasons. Dry weight of 2-0 white spruce was correlated with soil pH (r2 = 0.61) NO3 (r2 = 0.57), and P (r2 = 0.34) measured in September of the first growing season, indicating that fertilizers affected growth by their influence on these factors. Measurements made at planting showed late-season fertilized Douglas-fir had higher N and P tissue concentrations than growing-season fertilized trees. On average late-season fertilized trees had 6% higher survival than growing-season fertilized trees after planting in the forest. Survival appeared related to needle N concentration at planting, with maximum survival occurring at about 2.1% N. Height and stem volume relative growth rates were higher for late-season fertilized trees, although growing-season fertilized trees were still 9% taller than late-season fertilized trees after three seasons in the forest. Results suggested that fertilizer solubility was not as important for nursery growth as fertilizer composition, and its effect on soil pH, and that late-season fertilized stock might outperform growing-season fertilized stock in the forest.
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Marble, S. Christopher, Jeff L. Sibley, Charles H. Gilliam i H. Allen Torbert. "Application of Composted Poultry Litter as a Fertilizer for Landscape Bedding Plants". HortScience 46, nr 10 (październik 2011): 1367–72. http://dx.doi.org/10.21273/hortsci.46.10.1367.
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Each year, over 16 million tons of poultry litter is produced in the United States. Federal and state regulations now limit the amount of poultry litter that can be land-applied, making it difficult to store and dispose of poultry litter. The objective of this study was to evaluate composted poultry litter (CPL) as a fertilizer source for bedding plants at various rates in comparison with commercially available inorganic fertilizers in regard to plant growth and nutrient leaching. Two experiments were conducted to evaluate use of CPL as fertilizer for landscape annual bedding plants. Petunia spp. ‘Celebrity Red’ and Verbena hybrida ‘Quartz Scarlet’ were planted in raised beds simulating an urban landscape. Before planting, 10 inorganic fertilizer or CPL treatments were incorporated into the raised beds, including Peafowl® brand garden-grade fertilizer 13N–5.6P–10.9K (13-13-13) at rates of 4.9 g N/m2 and 9.8 g N/m2, Polyon® 13N–5.6P–10.9K (13-13-13) at rates of 4.9 g N/m2 and 9.8 g N/m2, and CPL at rates of 4.9 g N/m2, 9.8 g N/m2, 19.6 g N/m2, 29.4 g N/m2, 39.2 g N/m2, and 49 g N/m2. Use of CPL incorporated into landscape planting beds as a fertilizer source resulted in plants equal to or larger than plants grown with conventional inorganic fertilizers. Nitrate (NO3) and ammonia (NH4) levels in leachates from plots amended with CPL were comparable with plots amended with commercial inorganic fertilizers and nitrogen (N) levels were in most cases less in plots fertilized with CPL when compared with inorganic fertilizers when the same N rate was applied. Composted poultry litter may not be able to fully replace inorganic fertilizers, but it can reduce inorganic fertilizer requirements and provide an environmentally sound alternative to poultry waste disposal as well as provide beneficial aspects for plant growth in annual bedding plants.
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Merit, I. Nyoman, I. Wayan Narka i Tatiek Kusmawati. "Application of Dosage Combinations of Evagrow Biofertilizer and Chemical Fertilizer on Soil Characteristics, Growth and Yield of Rice". Advances in Tropical Biodiversity and Environmental Sciences 1, nr 1 (3.05.2017): 1. http://dx.doi.org/10.24843/atbes.2017.v01.i01.p01.
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Research on the effect of dosage combination of Evagrow bio-fertilizer and chemical fertilizers on soil properties, growth and yield of rice has been carried out in the glasshouse, Faculty of Agriculture, Udayana University using factorial experiment with a Randomized Block Design (RBD). The first factor is Evagrow bio-fertilizer in 3 level, i.e. E0 (without bio-fertilizers), E1 (5 g bio-fertilizer/L) E2 (10 grams bio-fertilizer/L). The second factor is chemical fertilizer, which consists of 3 levels: K0 (without chemical fertilizers), K1 (150 kg Urea/ha + 75 kg SP36/ha + 37.5 kg KCl/ha), K2 (300 kg Urea/ha + 150 kg SP36/ha + 75 kg KCl/ha). The results showed that chemical fertilizers give a significant and very significant effect on most of the rice growth and yield parameters. The application of chemical fertilizers K1 and K2 increased yield of dry grain harvest to 52.87% and 102.54% compared to controls. Application of Evagrow bio-fertilizer did not significantly increase growth and yield of rice. There is no interaction between chemical fertilizers and Evagrow bio- fertilizer. Similarly to some of the soil characteristics, biological fertilizer and chemical fertilizer application did not show significant effect on most of the soil characteristics, except on salt levels.Keywords: Evagrow Biofertilizer, Inorganic Fertilizer, Oryza Sativa
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Negi, P., R. Thakur, K. Manral, K. Tomar, B. S. Rawat, B. Ramola i Waseem Ahmad. "Coated Controlled-Release Fertilizers: Potential Solution for Sustainable Agriculture". Nature Environment and Pollution Technology 21, nr 4 (1.12.2022): 1739–45. http://dx.doi.org/10.46488/nept.2022.v21i04.028.
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The use of fertilizer in the agricultural field is essential for plant growth but an excess amount of pure chemical contents in fertilizers becomes harmful to every living being. To reduce this chemical exposure, the use of materials coated with Controlled Release Fertilizers (CRFs) are being used. The coating of materials outside the fertilizer does not allow the chemicals to spread completely within one application of fertilizer but its spread can be extended as will be done in 2-3 applications of fertilizer. The features of the undercoating material are thus vital to attain this delayed or slow release of the nutrients present in the fertilizer. The longevity of CRFs depends upon the width of the material coating surrounding the fertilizer, temperature, and moisture. The review focuses on the consequences of conventional fertilizers, the need to control the release of fertilizers and types of coatings used, and their application in sustainable agriculture.
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KENENBAEV, SB, SB RAMAZANOVA i VN GUSEV. "STATE AND PROSPECTS OF MINERAL FERTILIZERS USE IN AGRICULTURE OF KAZAKHSTAN". SABRAO Journal of Breeding and Genetics 55, nr 3 (30.06.2023): 886–95. http://dx.doi.org/10.54910/sabrao2023.55.3.23.
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The article is a dedicated analysis of the production and use of mineral fertilizers globally, focusing on the agriculture of Kazakhstan. From 1950 to 2020, the fertilizer use ranged between 3.6–29.0 kg of NPK per hectare in arable agricultural land of Kazakhstan. The maximum benefit of fertilizers happened in 1986 in Kazakhstan, with 1,039 t of mineral fertilizers (active substances) applied at an area of 47% of the total arable land, while in 1965, the fertilized area was only 6.6% of the entire sown field. In Kazakhstan, the annual recommended need for mineral fertilizers is one million tons (active ingredient). The paper also discussed the influence of the long-term application of fertilizers on the leading indicators of soil fertility and crop productivity. Employing regression analysis also explored a high degree of probability of a positive relationship among the four viable factors, i.e., fertilizer use intensity, agrochemical indicators of the soil, crop plants yields, and their quality.
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Kopytko, P. H., i R. V. Yakovenko. "Soil conditions and yield of repeatedly grown apple orchard depending on long-term fertilizer application". Collected Works of Uman National University of Horticulture 1, nr 98 (25.06.2021): 34–47. http://dx.doi.org/10.31395/2415-8240-2021-98-1-34-47.
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The issue of scientifically sound fertilizer application in fruit plantations, which are long-term and re-grown in one place remains insufficiently studied. To solve this problem is possible only in long-term stationary studies, as the impact of different fertilizer systems on changes in soil properties and tree productivity for a long period of their use. The results of researches of long-term fertilizer influence on the main fertility indices of dark gray podzolic heavy loam soil and productivity of repeatedly grown apple trees of Idared varieties on seed and vegetative (M4) rootstocks and Calville snow on seedling rootstock are considered. During the 85-year period of growing the first and second generation of apple trees in the experimental garden, the organic fertilizer (40 t/ha of cattle manure), mineral fertilizer (N120P120K120) and their combination (20 t/ha of manure + N60P60K60) were applied in the old plantation every two years in autumn in plowing in rows at 18–20 cm, and in the new repetition: manure, phosphorus and potassium fertilizers as well, and nitrogen fertilizer in half doses annually in spring for cultivation or disk plowing to a depth of 12–15 cm. As a result of research it was found that organic fertilizer better than mineral fertilizers provided the formation of soil fertility (humus and mobile compounds and forms of nutrients, soil reaction) and yield capacity of experimental apple trees, which for all years of fruiting exceeded the total yield of Calville snow and Idared on seedling and vegetative rootstocks, respectively, by 34.8, 27.7 and 23.4 % compared with the yield of the control non-fertilized areas and 16.0, 15.8 and 13.2 % – on those fertilized with N120Р120К120. Similar parameters of soil fertility indicators are formed by the organo-mineral fertilizer system with systematic long-term application of half the norms of organic and mineral fertilizers of manure 20 t/ha together with N60P60K60. However, the mineral system (N120P120K120) significantly less increases the humus content and content of macronutrients available for plant nutrition and does not enrich the soil with trace elements, acidifies the reaction of the soil environment
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Setyorini, Diah, Wiwik Hartatik, I. Made Subiksa i Dila Aksani. "Agronomic effectiveness, dry-matter, grain yield, nutrient uptake, and fertilizer use-efficiency of liquid organic fertilizer combined with NPK to sweet corn (Zea mays saccharata Sturt)". IOP Conference Series: Earth and Environmental Science 1165, nr 1 (1.04.2023): 012014. http://dx.doi.org/10.1088/1755-1315/1165/1/012014.
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Abstract The decline in agricultural land productivity due to climate change and excessive use of inorganic fertilizers requires us to implement an environmentally friendly cultivation system, by reducing the application rate of inorganic fertilizers and combining them with organic fertilizers. Liquid organic fertilizer (LOF) is one type of fertilizer that is expected to increase plant growth and yield and reduce the dose of inorganic fertilizers. The objective of this study was to examine the effect of LOF on growth, the yield of sweet corn, nutrient uptake, and the fertilizer use-efficiency of inorganic fertilizers. This Research has conducted at Inceptisol Galuga Bogor, with a randomized block design as an experimental design. The treatments consisted of a control, five doses of LOF and 2 doses of NPK fertilizer. The results showed LOF fertilizer at a dose of 0.75 - 3.0 l ha−1 combined with 100% NPK and 75% NPK increased the yield of fresh cobs by 15% - 19% compared to NPK without LOF. The weight of fresh cobs fertilized with LOF with 100% NPK was (14.63 - 16.68 t ha−1) with RAE= 130 - 205%, which is higher than without LOF (13.73 t ha−1). The combination of LOF with 75% NPK gave the weight of fresh cobs (11.88-15.12 t ha−1) with RAE = 115-507 %, which is higher than without LOF (11.75 t ha−1). LOF can contribute to NPK fertilizer efficiency by 25% of the dose. Nutrient use-efficiency for N is well-managed but lower for P and K.
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Wickham, Allison, i Jessica G. Davis. "Fish Emulsions, Cyano-Fertilizer, and Seaweed Extracts Affect Bell Pepper (Capsicum annuum L.) Plant Architecture, Yield, and Fruit Quality". Horticulturae 10, nr 5 (10.05.2024): 491. http://dx.doi.org/10.3390/horticulturae10050491.
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Bell peppers (Capsicum annuum) were grown in a greenhouse to evaluate organic fertilizer and foliar seaweed application effects on plant architecture, yield, and fruit quality. Many organic fertilizers contain phytohormones intrinsically. Hydrolyzed and non-hydrolyzed fish fertilizer and cyano-fertilizer treatments were applied in split applications every 7 days over a 135-day growing period. Control plants received no supplemental N. Each fertilizer treatment received applications of one of two different foliar seaweeds or no foliar seaweed in a 4 × 3 factorial design with three replications. Both hydrolyzed and non-hydrolyzed fish fertilizers and cyano-fertilizer increased the number of branches per plant compared to the N-deficient control. The plants receiving cyano-fertilizer or non-hydrolyzed fish fertilizer yielded more than the N-deficient control, and those treatments received 2–3 times the auxin application as the hydrolyzed fish fertilizer. In addition, the leaves from the plants treated with non-hydrolyzed fish fertilizer contained substantially higher levels of abscisic acid, although no abscisic acid was detected in the fertilizers. Both seaweed products decreased the number of fruits that were “bell”-shaped and increased the number of “long”-shaped fruits. Organic fertilizers are complex matrices of nutrients, phytohormones, and other metabolites, making it very challenging to determine the mechanisms behind the observations.
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Mwalongo, Dennis A., Nils H. Haneklaus, Jacob B. Lisuma, Nelson Mpumi, Aloyce I. Amasi, Jerome M. Mwimanzi, Furaha M. Chuma, Thomas T. Kivevele i Kelvin M. Mtei. "Uranium Dissemination with Phosphate Fertilizers Globally: A Systematic Review with Focus on East Africa". Sustainability 16, nr 4 (9.02.2024): 1496. http://dx.doi.org/10.3390/su16041496.
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Growing concern has been expressed about uranium (U) accumulation in agricultural soils caused by the long-term application of mineral fertilizers. More than 80% of naturally occurring U transfers from phosphate rock (PR), the raw material used in mineral fertilizer production, to phosphorus (P) fertilizers. These fertilizers are then distributed on agricultural soils, where the U could accumulate over time and become a risk to the environment. The objective of this work was to review the reported content of U in P fertilizers, its potential dispersion in soils, and its uptake by plants in different countries in the world as reported in the literature. The articles for this systematic review were selected from the Scopus database published between 2003 and 2022. The preferred reporting items for systematic reviews and meta-analyses (PRISMA) protocol were used. A total of 54 articles were assessed based on the standard inclusion and exclusion criteria. U concentrations in P fertilizers, agricultural soil dissemination, and plant uptake for available data were obtained and assessed. In order to compare a set of related data from the collected articles, box and whisker plots showing the distribution of U in P fertilizers are presented by region. The results from the reviewed articles show that the U concentrations in P fertilizer were in the range of 0.1–653 mg kg−1. Interestingly, Minjingu P fertilizers from Tanzania, which are used in six East African countries, showed the highest U concentrations (159 to 653 mg kg−1, average 390 mg kg−1). The reported U concentrations for these fertilizers are, in fact, comparable to those of conventional low-grade uranium deposits mined in Namibia and elsewhere. Additionally, approximately 96% of the reviewed articles indicate that fertilized soil has higher U concentrations than non-fertilized soils, hinting at a measurable effect of mineral fertilizer use. The review recommends U extraction during mineral fertilizer production so that potential environmental risks can be reduced and U resources that would otherwise be lost can be recovered and used to substitute conventional U mining elsewhere.
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Wang, Manman, Youliang Ye, Xv Chu, Yanan Zhao, Shuhong Zhang, Hui Chen, Wei Qin i Yang Wang. "Responses of Garlic Quality and Yields to Various Types and Rates of Potassium Fertilizer Applications". HortScience 57, nr 1 (styczeń 2022): 72–80. http://dx.doi.org/10.21273/hortsci15984-21.
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Potassium (K) is a critical plant nutrient that determines quality in a myriad of crops and increases production yields. However, excessive application of various types of K fertilizers can decrease both the food quality and yields, which translates as economic losses and food safety issues. The objectives of this study were to 1) elucidate the impacts of different application rates of various K fertilizers on garlic, with the aim to identify the optimal and most economical K fertilizer dosage and 2) compare the effects of applying two common K fertilizers (KCl and K2SO4) on garlic, to determine the optimal combination. From 2018 to 2020, we utilized two distinct K-fertilized fields to conduct our experiments. The results revealed optimal KCl fertilization increased the biomass and vegetation index in garlic, and promoted the transfer of nitrogen, phosphorus, and potassium nutrients from the stem and leaf to bulb, thereby increasing bulb production. The application of KCl fertilizer increased the number of cloves, the diameters of the cloves and bulbs, and reduced variations in bulb size. In addition, the application of KCl fertilizer improved the nutritional quality (Vitamin C, soluble sugar, soluble protein, and allicin) of the garlic and reduced the accumulation of nitrate. However, excessive KCl fertilizer cause decreased yields, appearance traits, and nutritional quality. Applying the same rate of K fertilizer in the form of K2SO4 in isolation increased the garlic yield by only 0.1% to 22.5% when compared with KCl fertilizer. However, the results were not always significant. In this study, the highest yields, appearance traits, and nutritional quality were achieved with the ratio of K2SO4: KCl = 3:1. Consequently, to ensure the highest economic value (considering the market prices of K fertilizer, garlic sprouts, and bulbs), the authors recommend a K fertilizer rate of 252.5 kg·ha−1 K2O, with K2SO4 accounting for 61.6% for garlic production in field.
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Tri Astuti, Suwarto, Herdhata Agusta i Irzal Effendi. "Efisiensi Penggunaan Pupuk pada Sistem Pertanian Terpadu Minapadi". Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 48, nr 2 (29.08.2020): 210–17. http://dx.doi.org/10.24831/jai.v48i2.29995.
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Rice-fish farming is a model that is considered suitable to be applied in rice fields, both on a large or limited land as long as water availability is sufficient for rice and fish to grow. In rice-fish farming, there is integration between fisheries and agriculture where integration can improve the efficiency of the supply and use of fertilizer and feed. The research aimed to find the reduction of inorganic fertilizer in integrated rice-fish farming with the rice-fish system to increase fertilizer efficiency. The experiment used a single factor randomized block design with five levels of treatment, which are; rice monoculture with 100% inorganic fertilizer, fish monoculture, rice-fish farming with 100% inorganic fertilizer, rice-fish farming with 60% inorganic fertilizer, and rice-fish farming with 20% inorganic fertilizer. Rice-fish farming could reduce the application of inorganic fertilizers through complementary relationships between rice and fish. Applying inorganic fertilizer 20% of the reference dose in the rice-fish farming produced productivity that was not significantly different from the rice-fish farming fertilized with 60% and 100% of the reference dose, and the rice monoculture with 100% of the reference dose of inorganic fertilizer. Rice-fish farming could save 80% of inorganic fertilizers so that increasing the efficiency of using inorganic fertilizers. Fish survival and fish weight in rice-fish farming were not significantly different from fish monoculture.
Keywords: inorganic fertilizer, monoculture, productivity, soil nutrients
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Tiwari, Pragati. "Fertilizer Consumption and Productionin India". International Journal of Agriculture and Animal Production, nr 44 (3.06.2024): 10–18. http://dx.doi.org/10.55529/ijaap.44.10.18.
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Fertilizers are one of the most important sectors in India. It is an essential input for agricultural production. Fertilizers play an important role in increasing agricultural productivity. The paper tells about fertilizer’s consumption and production of Indians well as analyze fertilizer sector. This is a conceptual and descriptive nature paper. It is based on secondary data. Companies should prepare their production and distribution plans as per the needs and interests of farmers. Today the farmers do not accept any product that does not satisfy them. Production of crops is increasing due to fertilizer consumption in India. But more usage of urea is misbalancing the ideal fertilizer application ratio. So, Farmers have to shift from straight fertilizers towards NPKS complex fertilizers for supplying the vital nutrients are needed by the crops for growth to improve this ratio.
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Baghdadi, Ali, Ridzwan A. Halim, Ali Ghasemzadeh, Mohd Fauzi Ramlan i Siti Zaharah Sakimin. "Impact of organic and inorganic fertilizers on the yield and quality of silage corn intercropped with soybean". PeerJ 6 (26.10.2018): e5280. http://dx.doi.org/10.7717/peerj.5280.
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Background Corn silage is an important feed for intense ruminant production, but the growth of corn relies heavily on the use of chemical fertilizers. Sustainable crop production requires careful management of all nutrient sources available on a farm, particularly in corn-based cropping systems. Methods Experiments were conducted to determine the appropriate technique of corn-legume intercropping in conjunction with the supplemental use of chemical fertilizers, organic manure, and biofertilizers (BFs). Acetylene reduction assays (ARAs) were also performed on corn and soybean roots. Results Combining chemical fertilizers with chicken manure (CM) in a 50:50 ratio and applying 50% NPK+50% CM+BF produced fresh forage and dry matter (DM) yields that were similar to those produced in the 100% nitrogen (N), phosphorus (P), potassium (K) treatment. Among the lone fertilizer treatments, the inorganic fertilizer (100% NPK) treatment produced the highest DM yield (13.86 t/ha) of forage and outyielded the 100% CM (9.74 t/ha) treatment. However, when CM was combined with NPK, the resulting DM yield of forage (13.86 t/ha) was the same as that resulting from 100% NPK (13.68 t/ha). Compared with CM applications alone, combinations of NPK and CM applications resulted in increased plant height, crop growth rates (CGRs) and leaf area index (LAI), but the values of these parameters were similar to those resulting from 100% NPK application. Fertilizers in which the ratio was 50% CM+50% NPK or 50% CM+50% NPK+BF resulted in protein yields that were similar to those resulting from conventional fertilizers. Similarly, the CP content did not significantly differ between applications of the 100% NPK and 50% CM+50% NPK fertilizers. The use of BFs had no significant impact on improving either the yield or quality of forage fertilized with inorganic or organic fertilizer. Lactic acid responded differently to different fertilizer applications and was significantly higher in the fertilized plots than in the unfertilized plots. Compared with treatments of lone chemical and lone organic manure fertilizers, treatments involving applications of BF and a combination of BF and NPK or CM resulted in higher ARA values. Discussion There is no simple and easy approach to increase biological nitrogen fixation (BNF) in grain legumes grown as part of a cropping system under realistic farm field conditions. Overall, evidence recorded from this study proves that, compared with corn monocrops combined with CM and chemical fertilizers, corn-soybean intercrops could increase forage yields and quality, produce higher total protein yields, and reduce the need for protein supplements and chemical fertilizers.
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Wang, Shuzhuan, Lei Xu i Mingde Hao. "Impacts of Long-Term Micronutrient Fertilizer Application on Soil Properties and Micronutrient Availability". International Journal of Environmental Research and Public Health 19, nr 23 (6.12.2022): 16358. http://dx.doi.org/10.3390/ijerph192316358.
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Deficiencies of micronutrients in calcareous soils have been reported in different areas of China’s Loess Plateau. The objective of this research was to study the influence of the continuous application of micronutrient fertilizers on soil properties and micronutrient availability in this region. The micronutrient fertilizer field plot experiment began in 1984. It included Zn, Mn and Cu fertilizer treatments and the control treatment. The crop system was continuously cropped winter wheat. The soil properties and available Zn, Mn, Cu and Fe were measured. Their relationships were analyzed through correlation and path analysis. After 31 years, the soil pH, CaCO3 and available P levels decreased; in contrast, the organic matter, fulvic acid, reducing substances and soil moisture levels in the surface soil increased in the micronutrient fertilized treatments compared to the control treatment. Cu and Zn fertilizers promoted the available Cu and Zn levels in the surface and deep soil, but available Mn was not significantly affected by Mn fertilizer. It can be seen from the interaction between the micronutrient availability and micronutrient fertilizers that Zn, Cu and Mn fertilizers can increase the available Fe level; Mn fertilizer can increase the available Cu level, and Cu and Mn fertilizers can increase the available Zn level. This means that Fe, Cu and Zn availability were easy to implement, whereas the soil-available Mn was difficult to improve in calcareous soils on the Loess Plateau. Fulvic acid and organic matter showed a significant and direct effect on the available Zn; the available Mn and Fe were mainly affected by the soil CaCO3 and moisture; the available Cu was mainly affected by the soil organic matter, available P and reducing substances. These results indicate the importance of organic matter in calcareous soils; it can not only directly affect the availability of micronutrients but also indirectly affect their availability through the indirect interaction with fulvic acid, reducing substances, available P and CaCO3. The above conclusions suggest that the long-term micronutrient fertilizers changed some important soil properties and increased the micronutrient availability in the loess-derived soil.
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Lubell, Jessica D., Kris J. Barker i George C. Elliott. "Comparison of Organic and Synthetic Fertilizers for Sedum Green Roof Maintenance". Journal of Environmental Horticulture 31, nr 4 (1.12.2013): 227–33. http://dx.doi.org/10.24266/0738-2898.31.4.227.
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Fertility is an important aspect of green roof maintenance. Aesthetic quality and growth of two sedum species (Sedum album and Sedum rupestre ‘Angelina’) treated with synthetic granular fertilizer [Green View 10N-4.4P-8.3K (10-10-10)] and two organic fertilizers [Coast of Maine 4N-0.9P-1.7K (4-2-2) and Nature Safe 8N-2.2P-4.5K (8-5-5)] at 10 g N·m−2 applied as a single spring application or a split application (spring and summer) and a controlled-release fertilizer [Nutricote 14N-6.1P-11.6K (14-14-14)] at the same rate and a no fertilizer control were evaluated. The best aesthetic quality and growth was for the single application synthetic granular fertilizer, followed by the split application of synthetic granular fertilizer. Also, single applications were better than split application for the organic fertilizers, indicating that sedums use nutrients the most in spring. The organic fertilizers performed poorly because they failed to provide utilizable nutrients in adequate quantities. A low level of microbial activity in green roof media, may have contributed to the minimal amount of utilizable nutrients released by the organic fertilizers. Plants treated with controlled-release fertilizer performed similarly to the control, however, the following spring they had the best aesthetic quality, indicating the prills contained some residual nutrients.
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Cardarelli, Mariateresa, Antonio El Chami, Paola Iovieno, Youssef Rouphael, Paolo Bonini i Giuseppe Colla. "Organic Fertilizer Sources Distinctively Modulate Productivity, Quality, Mineral Composition, and Soil Enzyme Activity of Greenhouse Lettuce Grown in Degraded Soil". Agronomy 13, nr 1 (7.01.2023): 194. http://dx.doi.org/10.3390/agronomy13010194.
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Intensive greenhouse vegetable production is often associated with a decline of crop productivity due to the increase of soil salinity and/or a reduction of biological fertility. The aim of the current work was to assess the effects of three organic fertilizers on morpho-physiological and agronomic traits of greenhouse lettuce as well as soil enzyme activity under poor soil quality conditions. The tested organic fertilizers (poultry manure, vinasse-based fertilizer, and insect’s frass fertilizer) were applied pre-planting at the same equivalent nitrogen (N) rate (90 kg N ha−1). Laboratory incubation assay results showed that vinasse-based fertilizer was the most suitable fertilizer in supplying the mineral N in the short term. All fertilizers increased shoot fresh and dry weight compared to unfertilized control with a more pronounced effect (+75%) with vinasse-based fertilizer and insect’s frass. Insect frass reduced by 27% the leaf nitrate concentration in comparison with the other treatments. The toxic heavy metal Pb was 46% lower in all organically fertilized lettuce leaves. Soil enzymatic activities of acid phosphatase, alkaline phosphatase, arylsulfatase (ArS), N-acetyl-β-D-glucosaminidase (NAGase), dehydrogenase, and total hydrolase (THA) were enhanced by poultry manure and insect’s frass in comparison with unfertilized control while vinasse-based fertilizer increased ArS, NAGase, and THA. Taken together, our data demonstrate that the application of organic fertilizers especially vinasse-based fertilizer and insect’s frass during intensive crop production is a suitable approach for mitigating the negative impact of soil salinity, enhancing soil biological fertility, and improving agronomic performance of greenhouse lettuce.
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Ahadiyat, Yugi Rahayu, i Sisno Sisno. "Hasil Padi dan Kelimpahan Gulma dengan Aplikasi Jenis Pupuk Berbeda di Lahan Kering Tadah Hujan pada Musim Kemarau". Jurnal Ilmu Pertanian Indonesia 26, nr 2 (28.04.2021): 259–66. http://dx.doi.org/10.18343/jipi.26.2.259.
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Rice yield and proper weed control need to be increased through an environmentally friendly agricultural system approach in rainfed land during the dry season by reducing the dosage of synthetic fertilizers. This study aims to determine the effect of different fertilizer applications on rice yield and weed abundance in rainfed land during the dry season. The study used a split-plot design, with the main plot of rice variety, i.e., Situ Bagendit and IR-64, and subplots of fertilizer, namely synthetic fertilizers (N, P, K), organic fertilizers + P60 + ½ dose of synthetic fertilizers, organic fertilizers + PGPR + ½ dose of synthetic fertilizer and organic fertilizer + P60 + PGPR + ½ dose of synthetic fertilizer with three replications. The variables observed were rice yield components, namely panicle length, total empty grain and content per panicle, grain weights per hill, effective plot and hectare, 1000 grain weight, harvest index, and weeds summed dominance ratio (SDR). The synthetic fertilizers and three various organic fertilizers, biological fertilizers, and synthetic fertilizers gave different results on the SDR of weeds. The weeds of Sphenoclea zeynalica and Cyperus difformis showed consistent dominance with higher SDR than other weeds, i.e.,> 15 and > 10, respectively. The application of organic and biological fertilizers with half the recommended dosage of the synthetic fertilizers is equivalent to applying the recommended dosage of synthetic fertilizers on rice yield during the dry season on the rainfed dryland with low rainfall intensity and a low yield of 1.3–1.7 t/ha.
Keywords: biological fertilizer, inorganic fertilizer, organic fertilizers, rice, weeds
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Eulenstein, Frank, Julian Ahlborn i Matthias Thielicke. "The Potential of Microgranular Fertilizers to Reduce Nutrient Surpluses When Growing Maize (Zea mays) in Regions with High Livestock Farming Intensity". Life 14, nr 1 (3.01.2024): 81. http://dx.doi.org/10.3390/life14010081.
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This contribution provides the first agroeconomic account of the application of a mineral microgranular fertilizer and an organomineral microgranular fertilizer directly beneath the corn in comparison to a common mineral band fertilizer in temperate climate regions. The focus of the study is on the reduction in phosphorus inputs while maintaining the yield of maize plants (Zea mays). The study used a three-year field trial to tabulate dry matter yields using the two phosphorus-reduced microgranular fertilizers, as well as a standard diammonium phosphate (DAP) fertilization method. The application of the organomineral microgranular fertilizer resulted in dry matter yields that were 15% higher (2.8 Mg per hectare) than the DAP variant, while higher yields using the mineral microgranular fertilizer only occurred in a single year. The higher yield of the organomineral microgranular fertilizer and the lower phosphorus amounts as a result of using that product resulted in a moderate phosphorus excess of 2.7 kg P ha−1, while DAP fertilization resulted in a surplus of 25.5 kg per hectare. The phosphorus balance on the plots fertilized with the mineral microgranular fertilizer followed a pattern similar to that of the organomineral microgranular fertilizer. We conclude that both microgranular fertilizers, applied directly beneath the corn, provide an adequate alternative to widespread DAP fertilization as a fertilizer band in maize cultivation on fertile soils.
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Eaton, L. J., K. R. Sanderson i S. A. E. Fillmore. "Comparison of consecutive and alternate fertilizer applications in wild blueberry production". Canadian Journal of Plant Science 89, nr 1 (1.01.2009): 93–98. http://dx.doi.org/10.4141/cjps08068.
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Research has shown that improved nutrient uptake and yield of wild blueberries (Vaccinium angustifolium Ait) are very sporadic when fertilizers are applied. Growers are concerned with environment impacts and keeping fertilizer costs to a minimum. Two experiments were conducted to evaluate the response of wild blueberries to soil-applied fertilization over four cropping cycles in Prince Edward Island and Nova Scotia from 1997 to 2004. Commercial fertilizers (17-17-17, 1-46-0 and 13-26-5) were soil-applied in the sprout year either as a consecutive fertilizer application (every cropping cycle) or an alternate fertilizer application (every second cropping cycle). All fertilizers were applied at a rate of 200 kg ha-1. Fertilizer applications increased soil levels of P and K, leaf tissue concentrations of N and P and stem lengths of plants. Higher levels of soil P and leaf tissue concentrations of N, P and K were observed with consecutive than with alternate fertilizer applications. Average stem lengths, buds and blossoms per stem were higher over the length of the study when fertilizers were applied consecutively compared with alternately. Fruit yields were increased compared with the unfertilized control. Within applied fertilizers treatments, fruit yield was not affected when fertilizer was applied in either consecutive or alternate cropping cycles. Alternate fertilizer applications may reduce soil accumulation of P and production costs without comprising yields. Key words: Cropping cycles, fertilization, soil and tissue nutrients, yield
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Aslani, Maryam, i Mohammad Kazem Souri. "Growth and Quality of Green Bean (Phaseolus vulgaris L.) under Foliar Application of Organic-Chelate Fertilizers". Open Agriculture 3, nr 1 (1.05.2018): 146–54. http://dx.doi.org/10.1515/opag-2018-0015.
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Abstract Organic-based chelate fertilizers can effectively improve nutrient uptake and use efficiency of plants. In the present study, foliar applications of three organic-chelate fertilizers on green bean (Phaseolus vulgaris L.) plants were compared to soil application of a mix chemical fertilizer (NPK) under greenhouse conditions. The treatments were foliar application (six sprays at 0.2% concentration) of Biomin, Humifolin, DelfonPlus, a mixture of micro and macronutrients, soil application of chemical fertilizer (NPK 0.5 g.kg-1 soil), and no fertilizer control. Foliar applications of organic-chelate fertilizers improved plant height, leaf area, shoot dry weight, leaf N and K concentration, pod number and pod yield compared to control plants. Pod soluble solids, vitamin C and total protein contents were significantly increased by foliar application of organic-chelate fertilizers. Soil applied NPK also improved green bean productivity compared to no fertilizer control. For most plant growth traits, there was no significant difference among the three organic-chelates. Foliar application of the macro- micro- nutrient mixture was not able to enhance the same growth, yield and pod quality traits like organic-chelates. Therefore, application of nutrient elements in form of organic-chelate and particularly by foliar application can guarantee better green bean plant performance.
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Yin, Dawei, Xiangyu Yang, Haize Wang, Xiaohong Guo, Shiqiang Wang, Zhihui Wang, Guohua Ding i in. "Effects of chemical-based fertilizer replacement with biochar-based fertilizer on albic soil nutrient content and maize yield". Open Life Sciences 17, nr 1 (1.01.2022): 517–28. http://dx.doi.org/10.1515/biol-2022-0057.
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Abstract Biochar-based fertilizers are used to improve soil’s physiochemical and biological properties and increase fertilizer utilization rate. Therefore, a technological model of biochar-based fertilizers is essential for the reduced application. This study was conducted to determine the effects of the different levels of biochar-based fertilizer applications on soil and plant nutrient content, as well as maize yield. Biochar-based fertilizer increased the total N content of maize stem and kernel and the total P content of maize axis and kernel. Biochar-based fertilizer increased the total P but decreased the total K of maize plants while increasing the fertilizer’s partial productivity. Treatment B1 (600.00 kg hm−2 of biochar-based fertilizer) increased the dry-matter weight of the maize at silking and filling stages by 1.60 and 15.83%. Treatment B1 increased the ear length, diameter, and plant height. Compared with BCK (600.00 kg hm−2 of conventional fertilizer), the yield of B1 was increased by 9.23%, and the difference was significant (p < 0.05). Biochar-based fertilizer treatments B2–B5 (biochar-based fertilizer reduced by 5–20%) reduced maize yield, but there was no significant difference between their yield and BCK. This study aimed to provide a basic understanding and reference for maize fertilizer reduction with good application prospects.
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Voitova, G. P. "Influence of fertilizer systems on spring barley yield under conditions of the Right Bank Forest Steppe". Scientific Journal Grain Crops 5, nr 1 (2021): 72–77. http://dx.doi.org/10.31867/2523-4544/0161.
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The research results of the influence of fertilizer systems on the productivity of spring barley in the Right-bank Forest Steppe were presented. Traditionally fertilized backgrounds were studied: mineral, organic and organomineral (with half fertilizer rates of previous backgrounds), and the alternative to organic matter was cereal straw and biomass of green manure crops. The best backgrounds and optimal fertilizer systems for high level of grain yield were determined. The main factors that formed the productive plant density of spring barley were the rates and types of fertilizers. The improving of plant nutrition due to using of organic and mineral fertilizers led to an increase in the productive plant density in the agrocenosis and the competitiveness of plants, the reducing of weed infestation. Depending on the type of fertilizer, the grain yield of spring barley changed. Based on the research results, it was found that the combination of traditional fertilization with the application of alternative types of organic matter increased the grain yield of barley spring compared to the control variant on mineral background within 1.61–2.04 t/ha, organic – 1.69–2.14 t/ha, organomineral – 1.79–2.19 t/ha. At the same time, the yield indicators had a range: 4.86–5.29 t/ha on the mineral, 4.94–5.39 t/ha – organic and 5.04–5.44 t/ha organomineral background. The highest yield of spring barley was provided by a combined fertilizer system with half norms both mineral fertilizer and manure against the background of the afteraction of predecessor straw with compensatory dose of N10/t and green manure biomass of white mustard as organic fertilizer, and equaled of 5.44 t/ha (yield gain was 2.19 t/ha compared to control). The optimal fertilizer systems to increase of spring barley yield in conditions of the Right Bank Forest Steppe are combined mineral, organic and organomineral fertilizer systems, which include the use of traditional fertilizers: the action of mineral fertilizers and the afteraction of manure, as well as alternative fertilizers – the straw of predecessor with a compensatory dose of N10/t in combination with the white mustard biomass. Keywords: spring barley, predecessor by-products, mineral fertilizers, yield, fertilizer systems, grain quality.
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Zinkevičienė, Raimonda, Eglė Jotautienė, Antanas Juostas, Antonio Comparetti i Edvardas Vaiciukevičius. "Simulation of Granular Organic Fertilizer Application by Centrifugal Spreader". Agronomy 11, nr 2 (29.01.2021): 247. http://dx.doi.org/10.3390/agronomy11020247.
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There is no specialized equipment designed to spread granular cylindrical organic fertilizer in the soil. There are also no rational recommendations available on how to spread this type of fertilizer. Mineral fertilizer spreaders are most often used for spreading granulated organic fertilizer. However, these fertilizers are significantly different from mineral fertilizers. Due to these differences, organic granular fertilizers often are spread unevenly, and the fertilizer does not reach the required working width. Furthermore, the rate of spreading is not accurate, and the fertilizer is often crushed too much. The objective of this research is to develop a simulation model for granular organic fertilizer applications with a centrifugal spreader in EDEM (extended distinct element method) software. It is possible to develop a numerical model that corresponds to a real spreader, and to determine the key physical–mechanical parameters for the application of granular organic fertilizer. This model can also be used for evaluating the transverse uniformity of the fertilizer in the field (along the trajectory normal to the machine). The results of this research show that the distance traveled by the fertilizer granules partially depends on the particle size, initial speed, type of fertilizer and the parameters of the spinning discs of the spreader.
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Novianti, F., S. A. Syaiful, A. Dachlan i N. Fadhi. "Efficiency of Fertilizing Maize Plants Through the Application of Slow Release NPK Tablet Fertilizer with Biofertilizer". Indonesian Journal of Agricultural Research 6, nr 3 (26.02.2024): 223–36. http://dx.doi.org/10.32734/injar.v6i3.13904.
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Inefficiencies in fertilization practices have become a substantial issue within current agricultural techniques. The inappropriate use of fertilizers can negatively impact both crop productivity and soil fertility. The aim of this research is to identify the efficiency of utilizing slow-release NPK tablet fertilizers supplemented with biofertilizers in maize crops. The experimental design incorporated a randomized complete block design (RCBD) consisting of nine combinations of fertilizer dosages between NPK tablet fertilizers and biofertilizers. The efficiency of fertilizer use can be seen from the RAE value of more than 100% shown by the NPK Tablet treatment which requires only one application compared to the recommended fertilizer, urea, and NPK Phonska which requires twice applications. Furthermore, optimization of the application of biofertilizer can be seen in the RSE value of more than 100% shown in the application of LBA biofertilizer together with NPK Tablets so that the application of biofertilizer is considered capable of increasing the efficiency of using inorganic fertilizers such as NPK Tablets.
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Ni, Xuerong, Xiangming Zhu, Qingxiu Feng, Dan Zhao, Weiwei Huang i Fengjuan Pan. "Effect of Application Rates of N and P Fertilizers on Soil Nematode Community Structure in Mollisols". Agronomy 14, nr 3 (29.02.2024): 507. http://dx.doi.org/10.3390/agronomy14030507.
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Long-term application of chemical fertilizer poses an environmental threat to belowground ecosystems. However, the impact of nitrogen (N) or phosphorus (P) fertilizers on soil biodiversity and the conditions of soil food web remains largely unknown. Soil nematodes are the most abundant multicellular soil animals and serve as excellent bioindicators of soil. Here, we investigated soil nematode communities and food web structure in a long-term experiment with different application rates of N and P fertilizers in northeast China. The application of N and P fertilizers increased the abundance of bacterivores but suppressed the abundance of omnivores and predators. The abundance of bacterivores exhibited an increasing trend, while that of omnivores and predators showed a decreasing trend with increasing rates of N and P fertilizers. Plant parasites displayed a decreasing trend in response to N fertilizer, but not to P fertilizer. N and P fertilizers also altered nematode functional guild composition, with N fertilizer increasing the abundance of Ba1, and P fertilizer increasing the abundance of Fu2 and Ba3. Nonmetric multidimensional scaling (NMDS) analysis revealed apparent successions of nematode communities from no fertilizer soils to high rates of N or P fertilizer soils at both the genus and functional guild levels. Furthermore, N and P fertilizers resulted in different nematode communities. In terms of nematode food web indices, N fertilizer increased the enrichment index (EI) but reduced the channel index (CI) and structure index (SI), whereas P fertilizer only reduced the SI value. High rates of N and P fertilizers increased the respired carbon of bacterivores but reduced the respired carbon of predators. Mantel tests revealed significant correlations between soil properties and the community composition of both fungivores and omnivores. Among all soil properties, available phosphorus (AP) had the greatest influence on the community structure of soil nematodes. Our findings indicate that N fertilizer has a powerful effect on nematode food web structure, while P fertilizer exerts a stronger effect on soil nematode community composition.
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Wells, Daniel E., Edward W. Bush, Jeffrey S. Beasley i Charles E. Johnson. "Effects of Phosphorus Source, Phosphorus Rate, and Liming Rate on Growth and Quality of Verbena canadensis Britton ‘Homestead Purple’ and Lantana camara L. ‘New Gold’". Journal of Environmental Horticulture 31, nr 2 (1.06.2013): 94–100. http://dx.doi.org/10.24266/0738-2898.31.2.94.
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Phosphate rock ores, rich in phosphorus (P), are mined in great quantities around the world for the production of P fertilizers. However, availability of phosphate reserves is in question due to decreasing global supplies. Therefore, application of alternative, renewable P sources is of interest. Poultry litter ash (PLA), a byproduct of bioenergy production, contains P concentrations comparable to conventional fertilizers. In this experiment, two P sources, PLA and superphosphate (SP), were compared at two P application rates and two liming rates as fertilizer sources for the production of two commonly-grown greenhouse crops (Verbena canadensis Britton ‘Homestead Purple’ and Lantana camara L.‘New Gold’). Application of PLA produced plants of comparable biomass and quality to those fertilized with SP. Increasing P application rate, across both P sources, increased total flower numbers 42 and 26% for verbena and lantana, respectively. Foliar P concentrations of verbena and lantana increased 27 and 62% for PLA-fertilized plants compared to SP. In addition, substrate pH increased 25% using PLA versus SP. Overall, PLA supplies adequate P fertility and does not reduce pH compared to the more water-soluble, rock phosphate based SP fertilizer.
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Torres, Kenneth C. "Controlled-release Fertilizers Effect on the Growth of Bed-grown Woody Landscape Plants". HortScience 22, nr 6 (grudzień 1987): 1330. http://dx.doi.org/10.21273/hortsci.22.6.1330.
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Abstract The effects of controlled-released fertilizers in container production have been evaluated (1,2), but little work has been reported on the effects of controlled-released fertilizers for field production techniques. Surface band and pre-plant fertilizer incorporation are the most common application methods for field-grown landscape plants. The major drawback of current field application methods are applications must be repeated every 4 to 6 months and a considerable amount of fertilizer is used inefficiently. The purpose of this research was to evaluate the effects of preplant applications of controlled-released fertilizers on the growth of field-grown landscape plants.
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Dollison, Mohammad D., i Beverly Branzuela Dollison. "AGRONOMIC PERFORMANCE OF SESAME (Sesamum indicum) UNDER DIFFERENT FERTILIZER MANAGEMENT". Biosaintifika: Journal of Biology & Biology Education 15, nr 3 (15.12.2023): 378–85. http://dx.doi.org/10.15294/biosaintifika.v15i3.47277.
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The sesame crop is one of the earliest crops that is being grown for edible oil purposes. The production performance of this crop is often affected by different factors such as soil fertility, water, and climatic conditions. This study evaluated the performance of sesame under different fertilizer management like animal manure, guano, vermicast, inorganic fertilizer, and no fertilizer application as check plots. The study showed that applying guano fertilizer significantly improved plant height performance 30 to 60 days after planting compared to inorganic fertilizer, other organic fertilizers, and treatments without fertilizer application. The number of capsules per plant produced by sesame was significantly higher with guano fertilizer application compared to treatments without fertilizer application and other organic and inorganic fertilizer sources as treatments. Similarly, the yield performance of sesame under different fertilizer applications resulted in a significant performance over guano fertilizer, with the highest yield obtained compared to other fertilizer management. The different organic and inorganic fertilizers are good sources of essential nutrients for sesame production. Likewise, further study can be conducted using a fertilizer combination, both organic and inorganic, for a better fertilizer management recommendation.
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Chu, Haiyan, Takeshi Fujii, Sho Morimoto, Xiangui Lin, Kazuyuki Yagi, Junli Hu i Jiabao Zhang. "Community Structure of Ammonia-Oxidizing Bacteria under Long-Term Application of Mineral Fertilizer and Organic Manure in a Sandy Loam Soil". Applied and Environmental Microbiology 73, nr 2 (10.11.2006): 485–91. http://dx.doi.org/10.1128/aem.01536-06.
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ABSTRACT The effects of mineral fertilizer (NPK) and organic manure on the community structure of soil ammonia-oxidizing bacteria (AOB) was investigated in a long-term (16-year) fertilizer experiment. The experiment included seven treatments: organic manure, half organic manure N plus half fertilizer N, fertilizer NPK, fertilizer NP, fertilizer NK, fertilizer PK, and the control (without fertilization). N fertilization greatly increased soil nitrification potential, and mineral N fertilizer had a greater impact than organic manure, while N deficiency treatment (PK) had no significant effect. AOB community structure was analyzed by PCR-denaturing gradient gel electrophoresis (PCR-DGGE) of the amoA gene, which encodes the α subunit of ammonia monooxygenase. DGGE profiles showed that the AOB community was more diverse in N-fertilized treatments than in the PK-fertilized treatment or the control, while one dominant band observed in the control could not be detected in any of the fertilized treatments. Phylogenetic analysis showed that the DGGE bands derived from N-fertilized treatments belonged to Nitrosospira cluster 3, indicating that N fertilization resulted in the dominance of Nitrosospira cluster 3 in soil. These results demonstrate that long-term application of N fertilizers could result in increased soil nitrification potential and the AOB community shifts in soil. Our results also showed the different effects of mineral fertilizer N versus organic manure N; the effects of P and K on the soil AOB community; and the importance of balanced fertilization with N, P, and K in promoting nitrification functions in arable soils.
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Kelley, William Terry. "EVALUATION OF SLOW-RELEASE FERTILIZER MATERIALS ON SELECTED VEGETABLE CROPS". HortScience 40, nr 3 (czerwiec 2005): 887d—887. http://dx.doi.org/10.21273/hortsci.40.3.887d.
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Despite some advantages, adoption of slow-release fertilizers in vegetables has been slow primarily due to cost. In crops fertilized with ground equipment, growers can make fewer trips through the field and assure fertilizer is present when conditions prevent application. With drip irrigation, some materials are difficult to inject, however, Nitamin is a new injectable liquid produced by Georgia Pacific. Thus, with plasticulture, growers can inject less frequently and potentially use lower rates. Granular and liquid formulations of slow-release fertilizer were tested on onions (Winter 2003–04), cabbage (Winter 2003–04) and pepper (Spring 2004) in Georgia. Combinations of traditional fertilizer with slow-release formulations and various rates of slow-release fertilizer alone were compared to a standard fertilizer program on these crops in separate experiments. The slow-release contains only N. So, other nutrients were held constant. Otherwise normal cultural practices were employed. Crops were harvested at maturity and data collected on yield and quality. In cabbage, with at least 50% of the standard N rate using the slow-release fertilizer, yields were comparable to the standard. Results on onions were similar with N rates of at least 75% of the standard for the liquid material; the granular formulation did not perform well. Split applications of slow-release fertilizer and combinations with standard fertilizer worked well for cabbage, but not for onions. Results on pepper, although inconclusive, indicated it was possible to get comparable yields at lower N rates with the slow-release material. Based on these results, lower N rates are possible on cabbage and onions with slow-release fertilizers which may make them economically feasible while providing application advantages to growers.
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Irmawanty, Irmawanty, Dian Safitri, Wira Yustika Rukman i Haerul Syam. "Organic waste processing and its application to potato plants through hydroponic techniques". JPBIO (Jurnal Pendidikan Biologi) 6, nr 1 (29.04.2021): 84–95. http://dx.doi.org/10.31932/jpbio.v6i1.1040.
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The Kalimbu market is one of the traditional markets in South Sulawesi with a very high buying and selling activity. The organic waste that is mostly generated from the activities at the Kalimbu Market is leftover vegetables and fruit. Vegetable and fruit waste provides a big advantage if it is managed properly, which is converted into liquid organic fertilizer through a fermentation process. The liquid organic fertilizers produced can help farmers overcome the high price of synthetic fertilizers and save the earth from pollution. The method used to determine the effect of types of organic waste (vegetable waste and fruit waste) on the physical and chemical quality of solid and liquid organic fertilizers used a randomized block design. Whereas the application of solid and liquid organic fertilizers to the production and nutritional content of potato plants used a treatment consisting of P0: basic fertilizer + without liquid organic fertilizer and P1: basic fertilizer + liquid organic fertilizer. The results of research on the manufacture of liquid organic fertilizer from Kalimbu market waste with vegetable and fruit samples also showed that the two samples required different storage times for composting. Plants treated with liquid organic fertilizer from the Kalimbu market waste have better stem growth, leaf number, and stem number.Keywords: Waste, organic, fermentation, hydroponic
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Ida Bagus Komang Mahardika, Made Sri Yuliartini i I Gusti Made Arjana. "Application of Organic Coal Fertilizer and Rabbit Farm Waste on Pumelo (Citrus grandis L. Osbeck) Seed Growth". Agriwar Journal 2, nr 2 (31.12.2022): 61–68. http://dx.doi.org/10.22225/aj.2.2.2022.61-68.
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The pumelo population in Bali is declining one is caused of a lack of good-quality seeds. This research was conducted to determine the effectiveness of organic coal fertilizer and rabbit farm waste as organic fertilizers for the growth of pomelo grafting seedlings. The research design used a nested pattern randomized block design with 3 replications. There are two factors, the first factor is the type of fertilizer, which are Coal fertilizers, Rabbit Farm Waste fertilizers, and Cow Manure fertilizers. The second factor is the dose of each type of fertilizer which consists of 3 levels, namely: 10 tons/ha; 20 tons/ha; and 30 tons/ha. The results showed that the effectiveness of the treatment of the type of organic fertilizer and the dose of the type of organic fertilizer had no significant effect on all observed variables. This shows that both coal fertilizer and rabbit manure have almost the same quality as cow manure in influencing the growth of pomelo seedlings. The effectiveness of fertilizers tested on the average shoot length of grafting tends to show the highest yields obtained at the highest dose (30 tons/ha), namely Coal fertilizer which is 28.80 cm, rabbit manure is 31.87 cm, and cow manure obtained is 28.13 cm.
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Plaksina, Vera, Alexander Astashov, Alexander Safronov i Tatiana Rodina. "Study of the effectiveness of the use of organic fertilizers on forage crops". АгроЭкоИнфо 4, nr 58 (8.08.2023): 9. http://dx.doi.org/10.51419/202134409.
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As a result of two-year studies, a significant effect of granulated organic fertilizer "Greenex" on morphometric indicators and productivity of biomass and seeds of the studied crops was found. The use of fertilizer at a dose of 200 kg / ha proved to be the most effective. So, the pre-sowing application of this dose of fertilizer provided a reliable excess of indicators relative to the control on all variants of the experiment. To improve growth processes, the maximum effect was found in soybeans and grain sorghum. It was revealed that the increase in yield when using fertilizer compared to the non-fertilized control was 12.99-29.33% for crops. Keywords: ORGANIC FERTILIZERS, YIELD, SOYBEANS, GRAIN SORGHUM, SUDAN GRASS, PHACELIA, PAIZA
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Sirbu, Carmen, Traian Cioroianu, Nicoleta Marin i Bogdan Rujoi. "Liquid Fertilizers with Organic Substances - Agrochemical Effects Obtained by Application". Revista de Chimie 69, nr 6 (15.07.2018): 1478–84. http://dx.doi.org/10.37358/rc.18.6.6350.
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The fertilization methods and technologies rapid development using extra-radicular fertilizers and liquid fertilizers with or without organic substances is due to both their controlled application possibilities depending on the vegetation phases, crop, agrochemical background, and nutrition deficiencies and efficiency increase of the indices regarding the fertilization costs -economical results The best agricultural practices application, compatible with the new climatic conditions, can actively contribute to environment preservation and protection at the same time with crops constancy and production capability securement. Fertilizers application with solid or liquid humic substances ensures all the needed compounds and minerals for creating and maintaining a fertile soil. At the same time their efficiency depends on multiple factors that include temperature, humidity, previous agricultural practices, soil physical and chemical characteristics, pesticides or other polluting products residues, microbial population present in the soil and the activity it develops. The humic compounds mediate pesticides and toxins degradation and contaminated soils biological reparation rests on humus help in microbial degradation. The paper presents the results obtained by radicular application of two experimental NPK type fertilizers with humic substances at the sunflower crop in vegetation pots. The fertilizers have been physically and chemically characterized and agrochemically tested as compared to an unfertilized control and two fertilized controls with a complex 15.15.15 NPK fertilizer in 120 and 180 kg/ha doses. The experimental fertilizers were applied in portions upon crops sowing and during vegetation in three 200, 300, respectively 400 liters fertilizer/ha and ensured significant gains as compared to the controls.The extracted humic substances and the fertilizers were physically and chemically characterized as well as through differential thermal gravimetric analysis and FT-IR spectrometry. The vegetal material and the sunflower seeds were analyzed regarding the nitrogen phosphorus, potassium, calcium, magnesium, zinc, copper, iron, and manganese contents.
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He, Rong, Chaofeng Shao, Rongguang Shi, Zheyu Zhang i Run Zhao. "Development Trend and Driving Factors of Agricultural Chemical Fertilizer Efficiency in China". Sustainability 12, nr 11 (4.06.2020): 4607. http://dx.doi.org/10.3390/su12114607.
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In China, a high input of chemical fertilizers is currently required for a relatively low increase in agricultural production, and this has resulted in prominent nonpoint source pollution and problems related to the quality of agricultural products. These phenomena threaten China’s implementation of United Nations Sustainable Development Goal 2 (SDG-2). To explore agricultural chemical fertilizer efficiency and the factors driving the growth in chemical fertilizer use in China, as based on an international comparative analysis of China’s chemical fertilizer input, the development trend in the application level and the efficiency in the use of chemical fertilizer in China were subject to time series analysis, and the factors influencing change were identified and analyzed using the Logarithmic Mean Divisia Index (LMDI). The results show that: (1) The gap in agricultural chemical fertilizer efficiency is still large when comparing China with modern agricultural countries, and excessive fertilizer input is still a major problem. (2) The continuous growth in the total amount of chemical fertilizer applied in China during the past 18 years has contributed to the increase in chemical fertilizer application intensity, which provided a cumulative contribution of 85.52%, with smaller contributions from the planting structure and crop sown area. Based on the analysis of fertilizer application, the chemical fertilizer application intensity of the main grain crops was the most significant factor, accounting for about a 40.00% cumulative contribution. (3) Since 2015, the total amount of chemical fertilizers has been reduced through gradually improving the utilization rate of chemical fertilizers, reducing the application intensity of chemical fertilizers, and implementing the fallow rotation system and other measures. Of these, the reduction in application intensity was the most effective at reducing the overall amount of applied fertilizer. To meet the target for achieving sustainable agricultural development, China must still reduce its use of chemical fertilizers by at least 21.80 million tons. Based on the results of current measures and international experience, some suggestions for reducing fertilizer usage are provided.
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Kahandage, P. D., C. P. Rupasinghe, K. T. Ariyawansha i S. D. S. Piyathissa. "Assessing environmental impacts of chemical fertilizers and organic fertilizers in Sri Lankan paddy fields through life cycle analysis". Journal of Dry Zone Agriculture 9, nr 1 (20.09.2023): 45–65. http://dx.doi.org/10.4038/jdza.v9i1.69.
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The application of fertilizer is a very important activity in paddy cultivation as it is one of the yield-determining factors. But the use of chemical fertilizer is a matter of debate as it is suspected as a cause of many prevailing health problems and comparatively large amounts of environmental pollution. Therefore, the focus of this study was to carry out a proper life cycle analysis on the application of chemical and agricultural waste-based organic fertilizers considering all the important steps such as collection of raw material, manufacturing, transportation, and application fields. The integration application of chemical and organic fertilizers was considered with two different ratios. Characterized results reveal that chemical fertilizer application has the highest impact on all selected categories, while organic fertilizer application has lower impact.The combination of chemical and organic fertilizers shows that reducing the proportion of chemical fertilizers reduces environmental impacts. Additionally, the study identifies the processes that significantly contribute to each impact category, such as urea production for climate change and freshwater ecotoxicity, and composting and field application for human toxicity and terrestrial acidification. Normalized results show that switching to organic fertilizers could reduce up to 82.4% of the current environmental impact. Therefore, an integrated approach will give more benefits in many ways. These findings provide valuable insights for policymakers and farmers in making informed decisions regarding sustainable fertilizer management.