Artykuły w czasopismach: „Potassium in agriculture”

1

Horst, W. J. "Potassium in agriculture". Field Crops Research 15, nr 3-4 (luty 1987): 394–96. http://dx.doi.org/10.1016/0378-4290(87)90029-3.

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BARRACLOUCH, PETER. "Potassium in Agriculture. 1985". Soil Science 143, nr 3 (marzec 1987): 227. http://dx.doi.org/10.1097/00010694-198703000-00011.

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Zörb, Christian, Mehmet Senbayram i Edgar Peiter. "Potassium in agriculture – Status and perspectives". Journal of Plant Physiology 171, nr 9 (maj 2014): 656–69. http://dx.doi.org/10.1016/j.jplph.2013.08.008.

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Krechetnikova, E. O., V. V. Krechetnikov, I. E. Titov i V. K. Kuznetsov. "Geoinformation system for designing adaptive landscape farming systems on the radioactively contaminated territory of the Tula research institute of agriculture". Geoinformatika, nr 4 (2020): 12–19. http://dx.doi.org/10.47148/1609-364x-2020-4-12-19.

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GIS project was developed for the radioactively contaminated territory of the Tulskii NII. It was created in order to project the adaptive landscape agricultures. It was based on the information on the concentrations of 137Cs radionuclide in soil, compiled over 16 years. Electronic maps have been developed to create a GIS project and included the location of agricultural lands; crop rotation systems; distribution of specific activity values for artificial 137Cs radionuclide in agricultural lands; agrochemical indexes (the humus content, potassium content, contribution of phosphorus, the acidity), soil types, relief. The created GIS project and the corresponding data bases will be used to collect, store and analyse the results of the survey in order to project the adaptive landscape agricultures. Key words: GIS project, adaptive landscape agriculture, agricultural lands, radiation safety.

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Bista, A., T. N. Joshi, K. Biswokarma i S. Yadav. "Agronomic and Environmental Aspects of Conservation Agriculture on Wheat Crop Production". International Journal of Applied Sciences and Biotechnology 7, nr 2 (27.06.2019): 161–66. http://dx.doi.org/10.3126/ijasbt.v7i2.24637.

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Potato (Solanum tuberosum L.) is one of the major vegetable crops of Nepal. Potato is grown all over the globe and consumed as either vegetable or staple food depending upon the crop production scenario. It is also an integral part of human diet. Potato is a high nutrient mining crop and needs higher fertilization for economic tuber production. Despite sufficient application of Nitrogen (N) and Phosphorus (P2O5), low replenishment and widespread potassium deficiency are limiting the potato production in Nepalese condition. Growth parameters such as plant height, leaf area and chlorophyll% was positively correlated with potassium application. Potassium alleviated stresses of frost and drought and reduced incidence of diseases like late blight, black scurf and hollow heart. Potassium also decreased the reducing sugar content and improved chips color and quality. Similarly, potassium application before harvest was found to increase storage life of potato tubers. Furthermore, potassium application significantly increased the yield of potato tubers and quality parameters such as Vitamin C content and specific gravity. Source of potassium and method of potassium application also affected growth, yield and quality parameters. Soil application of potassium in splits coupled with foliar spay was found to perform better. Optimum dose of potassium was recommended for economic tuber production Int. J. Appl. Sci. Biotechnol. Vol 7(2): 161-166

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Pathak, H., S. Mohanty, N. Jain i A. Bhatia. "Nitrogen, phosphorus, and potassium budgets in Indian agriculture". Nutrient Cycling in Agroecosystems 86, nr 3 (25.06.2009): 287–99. http://dx.doi.org/10.1007/s10705-009-9292-5.

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Römheld, Volker, i Ernest A. Kirkby. "Research on potassium in agriculture: needs and prospects". Plant and Soil 335, nr 1-2 (27.08.2010): 155–80. http://dx.doi.org/10.1007/s11104-010-0520-1.

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Aashifa, M. A. R., i P. Loganathan. "Preliminary Studies on Existing Scenario of Selected Soil Property in Cheddikulam DS Division Vavuniya, Sri Lanka". International Journal of Environment 5, nr 4 (13.01.2017): 1–11. http://dx.doi.org/10.3126/ije.v5i4.16389.

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This study was conducted to quantify the spatial variability of soil properties, use this information to produce accurate map by means of ordinary kriging and find the ways to reclaim the problem soil and make suggestions to cultivate the crop variety which is suitable for the existing soil property.70 sampling points were selected for that research using stratified random sampling method. Stratification was based on the type of land cover, and following land cover patterns were identified forest patches, agriculture land patches, grass land patches and catchments. Sampling points were randomly selected from each land cover types. Minimum distance between two adjacent sampling points was 500m. Soil samples were analyzed for pH, EC, exchangeable K, available P. In each location, soils were collected from top to - 30 cm depth (root zone) using a core sampler and sub soil samples were collected around the geo-reference point to obtain a composite sample. Geostatistical tool of the software (ArcGIS 10.2.2. trail version) was used to construct semi-variograms and spatial structure analysis for the variables. Geostatistical estimation had done by kriging. 13% of agriculture land area was acidic soil and 5.7% alkaline soil. 13% of agriculture land area was identified as saline soil. 67.11% of agriculture lands contain more phosphorous concentration than the optimum range. 3.4% agriculture lands contain higher potassium concentration than the optimum range. 98% of forest lands and 100% of grass lands contains phosphorous concentration higher than the optimum range. But forest lands and catchments shows lower level of potassium concentration. 22% of grass lands contain higher potassium than the optimum level. Agriculture practices leads to change in the soil hence identified soil problems should be reclaimed in order to maintain the fertility of soil for sustainable production. Proper management of soil can be a better solution for supporting the successful agricultural activity of community in future and socio-economic development of this region.INTERNATIONAL JOURNAL OF ENVIRONMENTVolume-5, Issue-4, Sep-Nov 2016, page : 1-11

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YAMASHITA, Masamichi, Haruhiko OHYA, Keiji NITTA i Michihiko YATAZAWA. "Sodium and potassium recycle in closed ecosystem-space agriculture." Journal of the Japan Society for Aeronautical and Space Sciences 33, nr 376 (1985): 288–96. http://dx.doi.org/10.2322/jjsass1969.33.288.

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Schueler, Tamara A., Marcelo L. Dourado, Sandy S. Videira, Claudia D. da Cunha i Andréa C. L. Rizzo. "Biosolubilization of verdete: An alternative potassium source for agriculture fertilizer". Biocatalysis and Agricultural Biotechnology 34 (lipiec 2021): 102031. http://dx.doi.org/10.1016/j.bcab.2021.102031.

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Sun, Hongbing, i Connie M. Weaver. "Rise in Potassium Deficiency in the US Population Linked to Agriculture Practices and Dietary Potassium Deficits". Journal of Agricultural and Food Chemistry 68, nr 40 (12.09.2020): 11121–27. http://dx.doi.org/10.1021/acs.jafc.0c05139.

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Yadav, Neelam, i Ajar Nath Yadav. "Actinobacteria for sustainable agriculture". Journal of Applied Biotechnology & Bioengineering 6, nr 1 (18.02.2019): 38–41. http://dx.doi.org/10.15406/jabb.2019.06.00172.

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Actinobacteria is a phylum and class of Gram-positive bacteria. The phylum Actinobacteria are classified into six classes namely Acidimicrobiia, Actinobacteria, Coriobacteriia, Nitriliruptoria, Rubrobacteria and Thermoleophilia. Members of phylum Actinobacteria are ubiquitous in nature. Actinobacteria can be utilized as biofertilizers for sustainable agriculture as they can enhance plant growth and soil health though different plant growth promoting attributes such as solubilization of phosphorus, potassium and zinc, production of Fe-chelating compounds, phytohormones hormones such indole acetic acids, cytokinin, and gibberellins as well as by biological nitrogen fixation. The Actinobacteria also plays an important role in mitigation of different abiotic stress conditions in plants. The members of phylum Actinobacteria such as Actinomyces, Arthrobacter, Bifidobacterium, Cellulomonas, Clavibacter, Corynebacterium, Frankia, Microbacterium, Micrococcus, Mycobacterium, Nocardia, Propionibacterium, Pseudonocardia, Rhodococcus, Sanguibacter and Streptomyces exhibited the multifarious plant growth promoting attributes and could be used as biofertilizers for crops growing under natural as well as under the abiotic stress conditions for plant growth and soil health for sustainable agriculture.

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Yadav, Neelam, i Ajar Nath Yadav. "Actinobacteria for sustainable agriculture". Journal of Applied Biotechnology & Bioengineering 6, nr 1 (18.02.2019): 38–41. http://dx.doi.org/10.15406/jabb.2019.06.00172.

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Actinobacteria is a phylum and class of Gram-positive bacteria. The phylum Actinobacteria are classified into six classes namely Acidimicrobiia, Actinobacteria, Coriobacteriia, Nitriliruptoria, Rubrobacteria and Thermoleophilia. Members of phylum Actinobacteria are ubiquitous in nature. Actinobacteria can be utilized as biofertilizers for sustainable agriculture as they can enhance plant growth and soil health though different plant growth promoting attributes such as solubilization of phosphorus, potassium and zinc, production of Fe-chelating compounds, phytohormones hormones such indole acetic acids, cytokinin, and gibberellins as well as by biological nitrogen fixation. The Actinobacteria also plays an important role in mitigation of different abiotic stress conditions in plants. The members of phylum Actinobacteria such as Actinomyces, Arthrobacter, Bifidobacterium, Cellulomonas, Clavibacter, Corynebacterium, Frankia, Microbacterium, Micrococcus, Mycobacterium, Nocardia, Propionibacterium, Pseudonocardia, Rhodococcus, Sanguibacter and Streptomyces exhibited the multifarious plant growth promoting attributes and could be used as biofertilizers for crops growing under natural as well as under the abiotic stress conditions for plant growth and soil health for sustainable agriculture.

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Zaid Al-Wardy, Mustafa Iskander, Salam Ali Khuit, Karrar Falah Hadi Al khafagi i Haidar Abd al Mahdi Kadim. "The impact of different potassium concentrations on the yield of mungbean (Vigna radiata L.)". Bionatura 7, nr 4 (15.12.2022): 1–3. http://dx.doi.org/10.21931/rb/2022.07.04.31.

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To investigate potassium's impact on mungbean yield, a field experiment was carried out in the Kut that was the Agriculture Directorate of Wasit in season 2018- 2019. This experiment compared four different potassium amounts (0, 1000, 2000 and 3000 mg.L-1), symboled K0, K1, K2 and K3, respectively. The findings of this research indicated that there were significant effects on pod length, the total number of pods per plant, seeds per pod, biological yield and grain yield, with treatment K3 achieving the highest average of 10.49 cm, 35.83 pods plant-1, 10.60 seeds pod-1, 1.430 ton ha-1, and 2.026 ton ha-1, respectively. At the same time, neither the ha harvest index nor the 100-seed weight was significantly impacted. Keywords: potassium, seed yield, biological yield, harvest index, mungbean.

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Hossen, Kawsar, Sadia Sultana, Md Mahfuzar Rahman, Ruhul Amin Rana, Tahmina Ferdous, Akhinur Shila i Rayhan Ahmed. "Interactive effect of variety and potassium fertilizer on the yield of salt-tolerant Boro rice". Asian-Australasian Journal of Bioscience and Biotechnology 5, nr 1 (30.04.2020): 21–26. http://dx.doi.org/10.3329/aajbb.v5i1.53860.

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Performance of salt-tolerant Boro rice was investigated under the interaction effect of variety and different doses of potassium fertilizer, which is a part of the research for developing agriculture in coastal areas of Bangladesh. A field experiment was conducted at the research field of Agriculture department, Noakhali Science and Technology University (NSTU), Noakhali-3814. The experiment was carried out in a Randomized Complete Block Design (RCBD) with three replications where two varieties viz. BINA dhan-8, BRRI dhan-28 and three doses of potassium viz. 120 kg/ha, 84 kg/ha and 36kg/ha were used as treatments. Plant height (cm), tillers/hill, grain/panicle, 1000 grain weight (g), grain yield (t/ha), straw yield (t/ha) and harvest index (%) were compared among varieties and treatments. Results revealed that only variety and only potassium fertilizer had non-significant influence but the interaction of variety and potassium fertilizer had a significant effect on the performance of salt-tolerant Boro rice. Therefore, the present study suggests that salt-tolerant BINA dhan-8 variety may be cultivated with 120 kg potassium/ha for obtaining higher yield in the southern coastal area of Bangladesh. Asian Australas. J. Biosci. Biotechnol. 2020, 5 (1), 21-26

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Krechetnikovа, Evgeniya, Viktor Krechetnikov, Igor Titov i Vladimir Kuznetsov. "Database of the results of radioecological monitoring of contaminated agricultural lands of the Tula NIISH". Geoinformatika, nr 2 (6.07.2021): 53–58. http://dx.doi.org/10.47148/1609-364x-2021-2-53-58.

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For the radioactively contaminated territory of the Tula Research Institute of Agriculture, a database has been created for storing spatially oriented information. The created database contains information about the location of agricultural areas; crop rotation structure; distribution of values of specific activity of 137Cs on agricultural lands; agrochemical indicators of soils of agricultural territories (content of humus, potassium, phosphorus, acidity); soil types; relief. It also contains a calculation module for assessing the content of 137Cs in crop and livestock products. The accumulated data array will be used for designing adaptive landscape farming systems using information on the 137Cs content in the soil generalized over a long-term period.

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Zhou, Feng Li, Yong Hong Hu, Hai Long Ma i Sha Xue. "Effect of Long-Term Fertilization on Soil Water Balance and Water Use Efficiency in the Loess Plateau of China". Applied Mechanics and Materials 361-363 (sierpień 2013): 982–87. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.982.

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Rational fertilization is the guarantee for the productivity and stability of crop and sustainable development of rain-fed agriculture. In this study, based on a long term fertilization experiment initiated in 1984, we researched the effect of different fertilizer application on soil water profile distribution and water use efficiency (WUE) from 1999 to 2010. The experimental design consisted a control treatment (CK) and eight fertilizer treatments: farmyard manure (M), farmyard manure and nitrogen (MN), farmyard manure and phosphorus (MP), nitrogen and phosphorus (NP), nitrogen, phosphorus and farmyard manure (NPM), nitrogen and potassium (NK), phosphorus and potassium (PK), nitrogen, potassium and potassium (NPK). Soil moisture content of MN, MP, MNP, M, and NP were significantly lower than Ck in 10-130 cm, while NPK and NK was only slightly lower than Ck. Compared with the CK, on average, treatments MNP and NPK increased the yield of crop by 259% and 226% and they also increased the crop WUE by 202% and 176%, respectively. The results indicated that the fertilizer application of NPK might be the best choice for the sustainable development of arid land agriculture on the Loess Plateau of China.

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Voltolini, Lisiana Crivelenti, Reinaldo Gaspar Bastos i Claudinei Fonseca Souza. "A simple system for ozone application in domestic sewage for agricultural reuse". Ambiente e Agua - An Interdisciplinary Journal of Applied Science 17, nr 6 (22.11.2022): 1–12. http://dx.doi.org/10.4136/ambi-agua.2861.

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The increasing demand for water in food production highlights the need to seek alternative sources of supply. Treated domestic sewage is a way to mitigate this problem, but it must comply with legislation to be used safely in agriculture. Ozone has been used for disinfection of domestic effluents due to its strong oxidizing character, allowing the adjustment of its parameters for agricultural reuse. This study therefore aimed to evaluate the sanitary and agricultural viability of domestic effluent treated with ozone. The experiment was carried out on laboratory benchtops and doses of 0, 8, 15, 30, 45, and 60 mg L−1 of ozone were applied. The application time for each dose was 0, 14, 27, 54, 81, and 108 seconds, respectively. Microbiological, physical, and chemical parameters were evaluated: total coliforms, Escherichia coli, pH, turbidity, dissolved oxygen, electrical conductivity, total organic carbon, total nitrogen, total phosphorus, potassium, magnesium, calcium, and sodium. Ozonation did not significantly alter the physical and chemical composition of wastewater, indicating an important advantage in terms of potential agricultural reuse. However, the pathogenic load of E. coli was not reduced enough for the effluent to be used in agriculture. The results suggest an investigation of the effects of ozone on the efficiency of sewage treatment, seeking to understand these interactions to identify ideal doses and exposure time, making wastewater safe for agricultural reuse. Keywords: agriculture, ozonation, treated effluent.

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Prado, Renato de Mello, Gustavo Caione i Cid Naudi Silva Campos. "Filter Cake and Vinasse as Fertilizers Contributing to Conservation Agriculture". Applied and Environmental Soil Science 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/581984.

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Utilising organic residues in agriculture contributes to the conservation of natural resources by recycling carbon and mineral elements. Organic residues produced by the sugar and alcohol agroindustries have great potential for use in conservation agriculture. The production of sugar and alcohol generates large quantities of byproducts, such as filter cake and vinasse, which can be used as soil improvers and substitutes for inorganic phosphorus and potassium fertilizers. However, the use of these residues in agriculture requires specific recommendations for each pedoclimatic condition to prevent environmental damage.

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Rahman, M. T., A. H. Khan, B. M. Negash, K. Sultana, M. A. Hasan, A. Askary, F. Rubbi i L. Das. "Effects of Disposed-water from Barapukuria Coal Mine, Dinajpur, Bangladesh on Agriculture and Aquaculture". IOP Conference Series: Materials Science and Engineering 1176, nr 1 (1.08.2021): 012008. http://dx.doi.org/10.1088/1757-899x/1176/1/012008.

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Abstract The environment is a prime concern in the mining industry because of its adverse impact on the solid, liquid, and gaseous surroundings. These three parts of the environment are directly connected to agricultural production. As the Barapukuria coal mine is located in the agricultural zone, its effects can be crucial. Previously, the impacts of the subsidence of the Barapukuria coal mining area were studied. So far, there is no significant study regarding its effects on agriculture. This research has focused on the impacts of the disposed water from the Barapukuria coal mine on the nearer aquaculture and agricultural fields. Therefore, the BOD, COD, DO, TDS, TSS, SS, residual chloride, hardness, alkalinity, carbon, sodium, calcium, magnesium, iron, potassium, sulphate, etc., being present in the disposed-water were analyzed in this study. The values of BOD, COD, DO, pH, TSS, TDS, and TS were lied in the best optimum range to cultivate crops and fisheries. It is also found that the disposed-water of the Barapukuria coal mine is tolerable for agriculture.

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Rahman, M. T., A. H. Khan, B. M. Negash, K. Sultana, M. A. Hasan, A. Askary, F. Rubbi i L. Das. "Effects of Disposed-water from Barapukuria Coal Mine, Dinajpur, Bangladesh on Agriculture and Aquaculture". IOP Conference Series: Materials Science and Engineering 1176, nr 1 (1.08.2021): 012008. http://dx.doi.org/10.1088/1757-899x/1176/1/012008.

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Abstract The environment is a prime concern in the mining industry because of its adverse impact on the solid, liquid, and gaseous surroundings. These three parts of the environment are directly connected to agricultural production. As the Barapukuria coal mine is located in the agricultural zone, its effects can be crucial. Previously, the impacts of the subsidence of the Barapukuria coal mining area were studied. So far, there is no significant study regarding its effects on agriculture. This research has focused on the impacts of the disposed water from the Barapukuria coal mine on the nearer aquaculture and agricultural fields. Therefore, the BOD, COD, DO, TDS, TSS, SS, residual chloride, hardness, alkalinity, carbon, sodium, calcium, magnesium, iron, potassium, sulphate, etc., being present in the disposed-water were analyzed in this study. The values of BOD, COD, DO, pH, TSS, TDS, and TS were lied in the best optimum range to cultivate crops and fisheries. It is also found that the disposed-water of the Barapukuria coal mine is tolerable for agriculture.

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Shitre, Dr Praven V. "Comparative Study of Soil Samples and its Physico Chemical Parameter from Wadwani Tehsil". International Journal for Research in Applied Science and Engineering Technology 9, nr 12 (31.12.2021): 1461–66. http://dx.doi.org/10.22214/ijraset.2021.39556.

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Abstract: India is one of the populated countries and Indian economy is highly depending on agriculture field. Indian farming is the main source of income for most of the population. So farmers are always curious about yield prediction. To increase yield production many factors are responsible like soil, weather, rain, fertilizers and pesticides. In the present study we are investigate the soil samples for its physico-chemical analysis in Wadwani Tehsil. The main purpose of present study is analyse the fertility level of the soil with the help of pH, EC, Organic Carbon, Nitrogen, Potassium, Phosphorous, Sulpher, Zinc etc. and recommend essential nutrients necessary in Wadwani Tehsil Marathwada region Maharashtra. Six representative samples were obtained and analysed for its pH, EC, Phosphorus, Potassium, and other important nutrient useful for agricultural. Keywords: Soil Properties, Nutrient Parameter, pH, EC, P, K, S, Zn, Mn, Beed.

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Khramtsov, I. F., i V. S. Boyko. "Nutrient regime of irrigated meadow-chernozem soils under long-term intensive use". Siberian Herald of Agricultural Science 51, nr 2 (7.06.2021): 5–12. http://dx.doi.org/10.26898/0370-8799-2021-2-1.

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The patterns of phosphorus and potassium status of soils were studied given the improvement of agricultural technologies of irrigated agriculture. Long-term studies were carried out in an experimental grain-grass crop rotation on irrigated meadow-chernozem soil. The experimental plot is located in the southern forest-steppe of Omsk region. Intensive use of irrigated arable land with a rational combination of moisture and mineral nutrition regimes contributes to obtaining maximum yields of forage and grain crops. The creation of various conditions for mineral nutrition due to an increased and high supply of mobile phosphorus and with the application of different options of agricultural technologies made it possible to simulate possible agro-ecological conditions that form contrasting indices of crop productivity. A comparative assessment of the effectiveness of various agricultural approaches to growing crops under irrigation conditions indicates that soil cultivation techniques and forecrops did not significantly affect the content of available phosphorus in the soil. The equilibrium content of mobile phosphorus given a long-term negative balance changed insignificantly. The systematic application of phosphorus-containing fertilizers significantly increased the phosphate status of the soil. However, an adequate assessment of the phosphate status of arable soils is possible using several diagnostic indices (methods). Long-term intensive use of irrigated arable land has reduced the reserves of easily exchangeable potassium from 4 to 1–2 mg/100 g of soil in the arable layer. The content of exchangeable potassium has also decreased by almost 2 times, but the soil remains in a high and very high class of its availability. However, a number of indicators show its increasing depletion in the most mobile fractions of soil potassium. The reserves of non-exchangeable potassium are more stable, which have decreased by about 19% over 40 years, and the soil has passed into the category with an unstable supply.

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Al-Jubouri, Abdullah K. J., i Hajar A. H. Khafaji. "The Effect of Type and Method of Immobilizing Bacillus Megaterium Bacteria Inoculation in Increasing Potassium Available and Growth of Wheat Plant Triticum Aestivum L". IOP Conference Series: Earth and Environmental Science 923, nr 1 (1.11.2021): 012076. http://dx.doi.org/10.1088/1755-1315/923/1/012076.

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Abstract A field experiment was carried out at the second agricultural research and experiment station of the College of Agriculture, Muthanna University, for the 2019-2020 agricultural season, with the randomized complete block design RCBD, using two factors and three repeats, that’s to study the effect of adding the bio inoculant from Bacillus megaterium bacteria, and when loaded the bacterium with the immobilization inoculation technology on zeolite, sodium alginate, Agarose and bentonite and it’s symboled of M0, M1, M2 and M3 respectively to compare its efficiency in increasing potassium available and growth of wheat plant variety Eba’a 99. The experiment included two comparison treatments, the first being B0 without the addition of the bacterial inoculant and the second comparative treatment being B1 adding the bacterial vaccine. At the end of the experiment, potassium concentration was estimated in soil after cultivation. The results showed a clear moral effect of the use of the immobilized bacterial inoculant in Nitrogen available at a 15.65 (mg N kg−1 soil) and with an increase of 17.14%, Potassium available at a 289.2 (mg K kg−1 soil) and an increase of 6.79%, and the plant height was a rate of 84.87 cm and an increase of 9.41% and bio yield at 810.25 kg dunum−1 and an increase of 34.98%.

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Zakiyah, Zahrah Nur, Cicik Rahmawati i Is Fatimah. "Analysis Of Phosphorus And Potassium Levels In Organic Fertilizer In The Integrated Laboratory Of Jombang District Agriculture Office". INDONESIAN JOURNAL OF CHEMICAL RESEARCH 3, nr 2 (27.05.2019): 38–48. http://dx.doi.org/10.20885/ijcr.vol3.iss2.art1.

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Quantitative analysis in the integrated laboratory of Jombang District Agriculture Office has been done on two samples of organic fertilizer with phosphorus and potassium parameters, considering these two elements are macronutrients which have an important role in the growth and development of plants. Determination of phosphorus level has been done by ascorbic acid method using double beam UV-Visible spectrophotometer, while determination of potassium level has been done by flame photometric method. There are 2 samples code of organic fertilizer, 13/F/16 and 14/F/16. From the result of analysis, the phosphorus level as P2O5 in 13/F/16 sample is 0.275%, while in the 14/F/16 sample is 0.29%. The potassium level as K2O in 13/F/16 sample is 2.58%, while in the 14/F/16 sample is 2.67%. These results meet the requirements for compost quality standards based on SNI 19-7030-2004, because they exceed the minimum requirements, which are 0.10% for phosphorus level and 0.20% for potassium level.

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A.S, Balaganesh, Pavithra N, RanjitKumar R, Dinesh K.P.B i Chandar Shekar B. "Bio-Assisted Synthesis Of Potassium Doped Ferric Sulphide Nanoparticles For Agricultural Applications". Kongunadu Research Journal 6, nr 2 (30.12.2019): 4–7. http://dx.doi.org/10.26524/krj294.

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A simple and cost effective green synthesis (Bio-Assisted) method was used to prepare Potassium doped ferric sulphide nanoparticles. The FTIR spectrum of potassium doped ferric sulphide shows characteristic peak at 617.2 cm-1 indicating M-O bond and shows the presence of K and Fe. The XRD analysis revealed the crystalline nature of the NPs. The average crystallite size was found to be 7.02 nm. The observed FESEM images showed the agglomeration of nanoparticles and are sponge like structure. The study revealed that potassium doped ferric sulphide nanoparticles could be used for high yield in agriculture.

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A S, Balaganesh, Pavithra N, Ranjith Kumar R, Dinesh K.P.B i Chandar Shekar B. "Synthesis of potassium doped ferric sulphide nanoparticles using bio-assisted method for agricultural applications". Kongunadu Research Journal 7, nr 2 (5.10.2020): 22–25. http://dx.doi.org/10.26524/krj.2020.17.

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Potassium (K) doped ferric sulphide nanoparticles were prepared by a simple green synthesis (Bio-Assisted) method. Structural (XRD) studies confirm the formation of K-doped Ferric sulphide nanoparticles. The FESEM images show the agglomeration of nanoparticles that are mostly sponge like structure and spherical shape. The plant growth analysis revealed that potassium doped ferric sulphide nanoparticle could be used as plant growth promoter for high yield in agriculture.

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Rusănescu, Carmen Otilia, Marin Rusănescu i Gabriel Alexandru Constantin. "Wastewater Management in Agriculture". Water 14, nr 21 (22.10.2022): 3351. http://dx.doi.org/10.3390/w14213351.

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Considering the global climate changes that have disrupted the availability of fresh water and led to the emergence of drought, an effective management strategy for water quality must be implemented. In this work, we analyzed the possibility of used and treated water being reused and the effect of its use on soil on the development of plants. In the case of irrigation with treated wastewater, the following parameters increased: calcium carbonate equivalent, organic matter, content of phosphorus, calcium, potassium, sodium, nitrogen, biochemical oxygen consumption; chemical oxygen demand (COD), decreased sodium absorption rate, soil electrical conductivity, pH, magnesium content, and soil bulk density. Due to the micronutrients it contains, the use of treated wastewater in irrigation can be an organic fertilizer for the soil. Wastewater is a source of soil water supply. Untreated wastewater may contain, depending on the source (industry, pharmacies, medicine, households), toxic compounds, bacteria, viruses, and helminths, which, if used for long periods of time in irrigation, can have a negative impact on health and the environment, reaching the soil, the roots of the crops, and then the underground water. Therefore, these waters must be used after adequate treatment. Global climate change disrupts the availability of fresh water and negatively influences the occurrence of floods, droughts, and water quality, which is why any water source must be managed correctly.

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Suntoro, Suntoro, Sudadi Sudadi, Hery Widijanto i Galuh Novikah Widy Utami. "Pengaruh Abu Vulkanik Kelud dan Pupuk Kandang terhadap Ketersediaan dan Serapan Kalium pada Jagung di Tanah Alfisol". Agrosains: Jurnal Penelitian Agronomi 18, nr 1 (12.03.2016): 18. http://dx.doi.org/10.20961/agsjpa.v18i1.18680.

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<p>Kelud volcanic ash has high source of minerals, which is potassium. This study aims to determine the effect and find the best composition of Kelud volcanic ash and manure to the availability and corn uptake of potassium in the Alfisols.This research is expected to provide information on the composition of volcanic ash Kelud and proper manure for agriculture. This research was conducted in the greenhouse, in the Laboratory of Ecology and Management of Crop Production, and soil chemistry laboratory of the Faculty of Agriculture, Sebelas Maret University in June 2014 - January 2015. Research using completely randomized design which consists of two factors, there are the thickness of Kelud volcanic ash which consists of four levels A0 (0 cm), A1 (2 cm), A2 (4 cm), and A3 (6 cm) and the dose of manure were P0 (0 ton/ha), P1 (2,5 ton/ha), and P2 (5 ton/ha). Each combination treatment was repeated 3 times. The data were then analyzed using the F test and continued with Duncan Multiple Range Test Test (DMRT) level of 95%. The results showed that the interaction between the two treatments were no significant different. Availability Potassium gradually decreased with an increase in the dose of volcanic ash Kelud, allegedly because of the low value of the total potassium Kelud volcanic ash. The results of measurements of plant potassium uptake increased with increasing dose Kelud volcanic ash and manure.</p>

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Dzierzbicka-Glowacka, Lidia, Stefan Pietrzak, Dawid Dybowski, Michał Białoskórski, Tadeusz Marcinkowski, Ludmiła Rossa, Marek Urbaniak i in. "Impact of agricultural farms on the environment of the Puck Commune: Integrated agriculture calculator—CalcGosPuck". PeerJ 7 (19.02.2019): e6478. http://dx.doi.org/10.7717/peerj.6478.

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Background Leaching of nutrients from agricultural areas is the main cause of water pollution and eutrophication of the Baltic Sea. A variety of remedial actions to reduce nitrogen and phosphorus losses from agricultural holdings and cultivated fields have been taken in the past. However, knowledge about the risk of nutrient leaching has not yet reached many farmers operating in the water catchment area of the Baltic Sea. Methods The nutrient balance method known as “At the farm gate” involves calculating separate balances for nitrogen (N), phosphorus (P) and potassium (K). After estimating all the components of the nutrient balance, the total balance for NPK is calculated and the data obtained is expressed as the ratio of total change (surplus) to the area of arable land on a farm. In addition, the nutrient usage efficiency on a farm is also calculated. An opinion poll was conducted in 2017 on 3.6% (n = 31) of the farms located in commune of Puck. The total area of the farms including arable and grass land ranged from 5 to 130 ha with an average of 45.82 ha. The arable land was on average 30.79 ha ranging from 4.45 to 130 ha while the grassland averaged 12.77 ha and ranged from 0 to 53 ha. Results The average consumption of mineral fertilizer in the sample population of farms was 114.9 kg N, 9.3 kg P, and 22.9 kg K·ha−1of agricultural land (AL), respectively. N balance in the sample farms being ranged from −23.3 to 254.5 kg N·ha−1AL while nutrient use efficiency ranged from 0.40% to 231.3%. In comparison, P surplus in the sample farms was 5.0 kg P·ha−1AL with the P use efficiency of 0.4–266.5%. Discussion Mean N fertilizer consumption in the tested farms was higher than the average usage across Poland and in the Pomeranian Voivodeship. However, mean consumption of potassium fertilizers was lower than mentioned averages. Mean P fertilizer consumption was higher than in the Pomeranian Voivodeship, but lower compared to the entire country. Generally, on the basis of designated research indicators of farm pressures on water quality, concentrations of total nitrogen and total phosphorus were obtained. CalcGosPuck (an integrated agriculture calculator) will help to raise farmers’ awareness about NPK flow on farm scale and to improve nutrient management.

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Pessoa, Rodrigo Souza, Carlos Alberto Silva, Bruno Silva Moretti, Antônio Eduardo Furtini Neto, Alberto Vasconcellos Inda i Nilton Curi. "SOLUBILIZATION OF POTASSIUM FROM ALTERNATIVE ROCKS BY HUMIC AND CITRIC ACIDS AND COFFEE HUSK". Ciência e Agrotecnologia 39, nr 6 (grudzień 2015): 553–64. http://dx.doi.org/10.1590/s1413-70542015000600002.

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ABSTRACT Brazil imports most of the potassium that it consumes in agriculture, however, such huge external dependence can be minimized with the use of alternative local K bearing rocks. This experiment was conducted with the objective of evaluating the solubility of nepheline syenite and glauconite as a function of three organic matrices, humic acid, citric acid and coffee husk. Incubation of low grade K rocks and organic matrices were done in laboratory conditions, in a completely randomized design. Each rock was mixed with five different doses of each organic matrix and the potassium solubilized was measured periodically, during 180 days. Regardless of the organic matrix and its dose investigated, nepheline syenite samples released more K than the modified glauconite. Soluble K increased as the incubation time increased and its release was greater as the organic matrix dose increased. There was more soluble K when the coffee husk was mixed with the potassic rocks, in relation to the humic and citric acids.

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Gül, Volkan, Erdoğan Öztürk i Murat Sezek. "Ayçiçeği Bitki Artıklarının Organik Tarım Amaçlı Değerlendirilmesi". Turkish Journal of Agriculture - Food Science and Technology 6, nr 6 (25.06.2018): 676. http://dx.doi.org/10.24925/turjaf.v6i6.676-679.1533.

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Chemical inputs such as hormones, drugs, and fertilizers used in the cultivation of agricultural products, which have an important place in human nutrition, affect health in a negative way. Therefore, organic fertilizers and natural manuring methods are being developed today that meet the needs of plants and do not adversely affect human health, instead of chemical substances damaging the soil and plant. Organic agriculture is important in terms of health nutrition, assessment of all kinds of organic wastes that will increase soil fertility and sustainability in agriculture. Especially in all parts of the sunflower plant, there are 63.9% potassium (K2O), 21.7% nitrogen (N) and 14.4% phosphorus (P2O5) nutrients and the specific amount of stalks and roots remaining after the harvest in sunflower cultivation areas is mixed with soil and used as green manure Is one of the most important methods that can be practically applied. In addition, remaining parts of sunflower such as stem and table after harvest can be evaluated as burning. These ashes containing highly potassium can be evaluated as organic fertilizer by sprinkling on the field. In this compilation; Especially in Turkey, sunflower harvest residues are evaluated in the poor lands in terms of organic matter, raising the awareness of the farmers towards obtaining the organic products, and the contributions of this to the economy are examined.

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Bwalya Umar, Bridget, i Joshua Sakambuta. "Conservation Agriculture and Soil Fertility Improvements: Indications from Smallholder Farmers in Chafukuma, Solwezi, Zambia". University of Zambia Journal of Agricultural and Biomedical Sciences 5, nr 2 (1.04.2021): 1–13. http://dx.doi.org/10.53974/unza.jabs.5.2.592.

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This study assessed the effects of conservation agriculture (CA) practices on soil fertility of smallholder farmers’ agricultural fields in Chafukuma, North Western Zambia. A total of 34 paired soil samples from adjacent agricultural fields in which CA and conventional agriculture (CV) had been practiced for at least five years were analysed for significant differences in plant available phosphorus (P), exchangeable potassium (K), total nitrogen (N), soil organic carbon (SOC) and soil reaction (pH). Smallholder farmers’ CA practices and their perceptions of CA’s effects on soil fertility were investigated through 34 semi structured interviews. Secondary data on CA was collected through desk analysis of CA publications. The study found evidence of CA associated improvements in soil fertility (Tcalc= 4.520, p < 0.0001). This improvement was attributed to the consistent use of good agronomic practices in CA fields whereas these practices were mostly absent from CV fields. The study concludes that CA improved soil fertility in agricultural fields of smallholder farmers in Chafukuma, and could be promoted in CA systems in other high rainfall areas of Zambia provided all the important agronomic practices are utilized consistently. Most of the CA associated agronomic practices could also be extended to CV fields successfully.

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Hashim, Sarfraz, Muhammad Waqas, Ramesh P. Rudra, Akhtar Akhbtar Khan, Asif Ali Mirani, Tariq Sultan, Farrukh Ehsan, Muhammad Abid i Muhammad Saifullah. "On-Farm Composting of Agricultural Waste Materials for Sustainable Agriculture in Pakistan". Scientifica 2022 (8.08.2022): 1–12. http://dx.doi.org/10.1155/2022/5831832.

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Agriculture is the economic backbone of Pakistan. 67% of country’s population resides in rural areas and primarily depends on agriculture. Pakistan's soils are poor in OM and have a low C : N ratio, and the overall fertility status is insufficient to support increased crop yields. Compost is an excellent alternative solution for improving soil OM content. However, this excellent alternative supply in Pakistan has yet to be used. Mass volumes of leaves, grass clippings, plant stalks, vines, weeds, twigs, and branches are burned daily. In this study, different compost piles (P1, P2, and P3) of compost were made using different agricultural and animal waste combinations to assess temperature, pH, and NPK. Results revealed that P3 demonstrated the most successful composting procedure. The temperature and pH levels throughout the composting process were determined in a specified range of 42–45oC and 6.1–8.3, respectively. Total nitrogen content ranged from 81.5 to 2175 ppm in farm compost. Total phosphorus concentrations range from 1.33 to 13.98 ppm, and potassium levels, on the other hand, range from 91.53 to 640 ppm in farm compost. The overall nitrogen concentration grew progressively between each pile at the end of a week. The varied concentrations revealed that adding various forms of agricultural waste would result in a variation in the quantity of NPK owing to microbial activity. On-farm composting has emerged as an effective technique for the sustainability of agricultural activities, capable of resolving crucial problems like crop residues and livestock waste disposal. Based on this study’s results, the pile (P3) combination shows the best NPK value performance and is recommended for agricultural uses to overcome the OM deficiency.

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Rachman, Latief Mahir. "Using Soil Quality Index Plus to assess soil conditions and limiting factors for dryland farming". SAINS TANAH - Journal of Soil Science and Agroclimatology 17, nr 2 (30.12.2020): 100. http://dx.doi.org/10.20961/stjssa.v17i2.46889.

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Agriculture 3.0 and Agriculture 4.0 requires appropriate agricultural practices, including soil data that are practical, accurate, and easy to understand. Using soil type maps and land suitability class maps for soil information not only challenges users but also does not provide soil quality information such as production potential and plant growth and production inhibitors. Other techniques that can provide more appropriate soil information for agricultural purposes are thus needed. This research suggests the soil assessment system Soil Quality Index Plus, which provides accessible information regarding soil conditions and plant growth and production inhibitors in the context of dryland farming. Field trials were conducted in 36 locations across five regencies in West Java, Indonesia. Soil Quality Index Plus accurately assessed soil quality by using 11 key parameters as a dataset: effective depth, texture class, bulk density, drainage, pH, cation exchange capacity, total organic nitrogen, available phosphate, exchangeable potassium, aluminum saturation, and total carbon organic. The majority of the soils studied were classified as medium soil quality, with low organic carbon being the most common limiting factor. Improved fertilizer management, especially the use of organic fertilizers, phosphate- and nitrogen-based fertilizers, and agricultural lime should be implemented in particular areas.

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Hussein Noor Aljana, Mohammed. "Response of Newly Introduced Tomato Cultivars to different levels of potassium fertilizer under controlled Environment condition". Al-Qadisiyah Journal For Agriculture Sciences (QJAS) (P-ISSN: 2077-5822 , E-ISSN: 2617-1479) 9, nr 1 (7.03.2019): 165–69. http://dx.doi.org/10.33794/qjas.vol9.iss1.75.

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The experiment was carried out during growing season (2016-2017) at station of greenhouses, AL-muthanna university- collage of agriculture- second research station (Al-Bander) to study the response of introduced tomato cultivars to different concentrations of potassium under protected agriculture conditions. The research included three cultivars (Pusa ruby - Arka vikash- Arka Alok) and three levels of Potassium Fertilizer (90-180-270 kg/ha-1). The Randomized Complete Block Design with factorial experiment (RCBD) with three replicates. The results showed the superiority of Arka Alok variety over others in plant height 121.76 cm, fruit width 6.82 cm, fruit length 4.23 cm, average fruit weight 130.61g, leaf area 129.5 cm2, the yield per plant 2.16 kg. The potassium level (270 Kg/ha-1) was also significantly higher in plant height 118.79 cm, fruit width 5.477 cm, fruit length 3.536 cm, 84.60 g, leaf area 127.3 cm2, TSS 4.97 and chlorophyll content 406.89 mg.m2 and yield per plant 2.16 kg. While the interaction showed significant difference (Arka Alok × 270 Kg.ha-1) in fruit length was 4.24 cm, chlorophyll content was 374.91 mg. m2 and the yield per plant was 2.82 kg. plant-1

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Narayanan, Kannan, i Ayele Getachew. "Investigating suitability of treated wastewater for agriculture in Hawassa, Sidama region, Ethiopia". International Journal of Agricultural Research, Innovation and Technology 10, nr 2 (21.01.2021): 59–65. http://dx.doi.org/10.3329/ijarit.v10i2.51578.

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This study is based on the quality of wastewater from Hawassa University surroundings, which was assessed to determine its suitability for irrigation purposes during 2019. Grab samples of influent and the treated water were taken for assessing for quality parameters. The study revealed that the treated water could be used for irrigation purpose with some moderate restrictions. Even though Electrical Conductivity (EC) and Total Dissolved Solids (TDS) permit to irrigate fruit trees and fodder crops, there is a risk of soil degradation due to high value of Sodium Adsorption Ratio (SAR). Results also indicated that carbonate, potassium and phosphate exceeded the specified limits for wastewater reuse in agriculture. Despite increased nutritive elements, continuous use of treated sewage water for irrigation will make the soil acidic. Analysis of soil parameters indicated that there is an increase in nitrogen, phosphate and potassium nutrient levels considerably to benefit crop production but increase in soil EC is a serious concern. Int. J. Agril. Res. Innov. Tech. 10(2): 59-65, December 2020

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Jiří, Souček, Pražan Radek, Roy Amitava, Plíva Petr, Jelínek Antonín i Vegricht Jiří. "Comparison of logistic, energy and exploitative parameters of compost and manure application by spreaders". Research in Agricultural Engineering 63, Special Issue (22.12.2017): S33—S39. http://dx.doi.org/10.17221/37/2017-rae.

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This article deals with comparison of composts and manure use from the viewpoint of handling, transport and application on agricultural land. The published values were established by measurements under working conditions and afterwards converted on the basis of the content of nutrients defined in laboratory. Compost contained a greater share of nitrogen, phosphorus and potassium and had higher dry matter content and lower volume weight. Direct consumed energy expressed by recalculation of the consumed diesel fuel in case of composts moved from 5.12 MJ/kg (potassium) up to 16.19 MJ/kg (phosphorus). In case of manure it was higher and moved from 10.49 MJ/kg (nitrogen) up to 29.79 MJ/kg (phosphorus). The greatest share in energy consumption occupies transport, which was considered uniformly at the distance of 5 km. The study confirmed the feasibility of use of compost in agriculture as a partial substitute of conventional organic fertilizers; for its handling, transport and application the standard mechanization used for manure may be utilized.

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Krishnamoorthy, C., i S. Kamalesh. "Comparative study of vetiver root (Chrysopogon zizanioides) and other biochars for water purification". Journal of Applied Horticulture 24, nr 01 (17.08.2022): 125–28. http://dx.doi.org/10.37855/jah.2022.v24i01.24.

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A lab experiment was conducted in Vanavarayar Institute of Agriculture (Affiliated to Tamil Nadu Agricultural University), Pollachi, Tamil Nadu, India during 2018-2019 in a completely randomized design to study the effect of vetiver root (Chrysopogon zizanioides) and other biochars on water quality and water nutrient status in Bore well water and Well water. The experiment consisted of five main factors and two sub-factors. The samples like vetiver root, vetiver root biochar, sugarcane bagasse, palmyrah fruit and banana peel were shade dried and dried in a hot air oven at different temperatures for uniform drying. The pyrolysis process i.e. dried samples into biochar with the recommended temperatures, was carried out in Dr. Mahalingam College of Engineering and Technology, Pollachi. Water from Bore well and well was filtered using vetiver root and different biochars. Water quality parameters such as pH, EC, TDS, potassium, alkalinity were analyzed. The analysis concludes that vetiver root biochar-treated water showed best results in pH, Electrical conductivity, TDS, Potassium and Sodium concentrations.

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Padafani, Bertolomeus Djou Bataona. "Effect of Urea and KCl Fertilization on the Growth and Results of Gogo Rice of Situ Pateggang Variety". Jurnal Penelitian Pendidikan IPA 8, nr 6 (30.12.2022): 3159–64. http://dx.doi.org/10.29303/jppipa.v8i6.2592.

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Rice requires nitrogen for the growth of plant vegetative organs. Potassium plays a role in regulating the osmotic pressure and turgor pressure of plants, especially in a dry land. The purpose of this study was to determine the effect of varieties and nitrogen and potassium fertilization on the growth and yield of upland rice. The research was conducted in Bleberan Village, Kab. Gunungkidul and continued at the Laboratory of the Department of Agricultural Cultivation, Faculty of Agriculture, Gadjah Mada University. This study used a split-plot design of three replications. Planting The main plot is nitrogen fertilization which consists of no nitrogen fertilization (0 kg.ha-1 Urea), nitrogen fertilization according to the recommendation (350 kg.ha-1 Urea) and twice recommended nitrogen fertilization (700 kg.ha-1 Urea). Subplots potassium fertilization which consists of no potassium fertilization (0 kg.ha-1), potassium fertilization according to the recommendation (225 kg.ha-1 KCl), and twice recommended potassium fertilization (450 kg.ha-1 KCL). This planting uses polybags, per plot there are 10 polybags containing 3 upland rice seeds. There were 9 treatment combinations, each of which was repeated three times. Analysis of the data using variance, then the Tukey test with a level of 5% was carried out. The results showed that Urea fertilization did not increase the total dry weight of the plant, the number of panicles and 1000 grain weight, and grain yield per clump. KCl fertilization with a dose of 60 g/plot (450 kg/ha) increased the total dry weight of the plant but did not increase the number of panicles and 1000 grain weight and plant yield.

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Tenorio-Berrío, Rubén, Marta-Marina Pérez-Alonso, Jesús Vicente-Carbajosa, Leticia Martín-Torres, Ingo Dreyer i Stephan Pollmann. "Identification of Two Auxin-Regulated Potassium Transporters Involved in Seed Maturation". International Journal of Molecular Sciences 19, nr 7 (22.07.2018): 2132. http://dx.doi.org/10.3390/ijms19072132.

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The seed is the most important plant reproductive unit responsible for the evolutionary success of flowering plants. Aside from its essential function in the sexual reproduction of plants, the seed also represents the most economically important agricultural product worldwide, providing energy, nutrients, and raw materials for human nutrition, livestock feed, and countless manufactured goods. Hence, improvements in seed quality or size are highly valuable, due to their economic potential in agriculture. Recently, the importance of indolic compounds in regulating these traits has been reported for Arabidopsis thaliana. The transcriptional and physiological mechanisms involved, however, remain largely undisclosed. Potassium transporters have been suggested as possible mediators of embryo cell size, controlling turgor pressure during seed maturation. In addition, it has been demonstrated that the expression of K+ transporters is effectively regulated by auxin. Here, we provide evidence for the identification of two Arabidopsis K+ transporters, HAK/KT12 (At1g60160) and KUP4 (At4g23640), that are likely to be implicated in determining seed size during seed maturation and, at the same time, show a differential regulation by indole-3-acetic acid and indole-3-acetamide.

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S, Vijayakumar, Dinesh Kumar, Kulasekaran Ramesh, Prabhu Govindasam, Dinesh Jinger, Rubina Khanam, Saravanane P i in. "Potassium nutrition in rice: A review". Oryza-An International Journal on Rice 58, nr 3 (30.09.2021): 341–53. http://dx.doi.org/10.35709/ory.2021.58.3.1.

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Potassium (K) is the most neglected nutrient in Indian agriculture and accounts only 10% of the total fertilizer use. The increased cropping intensity and use of high yielding cultivars since the green revolution led to heavy withdrawal of K from soil. Persistent K mining over the past six decades has mined soil K level in many cultivated areas and continuously transforming sufficiency into deficiency. A recent soil test a little over 1 lakh samples from 33 states of India have categorized 41.1%, 29.3%, and 29.5% of soil samples as low, medium and high in available K respectively. Further, the trend of soil available K status showed a persistent decline in percentage of area under high and medium soil K. Consequently, the evidence of rice crop responding to K nutrition is increased. This review attempts the nexus of K nutrition in rice for devising strategies for potassium management in rice-based cropping systems in the country.

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Kapoor, Riti Thapar, i Arti Yadav. "Exogenous Application Of Potassium Silicate For Growth Enhancement And Salt Stress Alleviation In Coriander (Coriandrum Sativum L.)". Bangladesh Journal of Botany 51, nr 4 (29.12.2022): 669–75. http://dx.doi.org/10.3329/bjb.v51i4.63484.

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Salinity is a major threat to agriculture and its adverse effect on farming land is expanding day by day. In the present study effects of potassium silicate on germination and biochemical parameters of Coriandrum sativum under salt stress were studied. The maximum seed germination (94%) of coriander seeds was observed with potassium silicate. Total chlorophyll content showed the following order: PS > C > NaCl (2mM) + PS > NaCl (4 mM) +PS > NaCl (6mM) +PS > NaCl. Potassium silicate enhanced biochemical components such as sugar, proline, protein and total antioxidant contents in coriander seedlings. The maximum total antioxidant content (46%) was observed in NaCl (6mM) + PS treatment. Hence, potassium silicate acts as a growth stimulating agent and can be used as fertilizer for coriander plants under salt stress. Bangladesh J. Bot. 51(4): 669-675, 2022 (December)

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Kravchenko, Yu. "Ukrainian Chernozem Fertility Reproduction under Soil Conservation Agriculture". Agrobìologìâ, nr 1(157) (25.05.2020): 67–79. http://dx.doi.org/10.33245/2310-9270-2020-157-1-67-79.

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In Ukraine 57.5 % of agricultural land is subjected to erosion with 10–24 million tons of humus, 0.3–0.96 million tons of nitrogen, 0.7–0.9 million tons of phosphorus and 6–12 million tons of potassium lost annually. Degradation processes are also common on chernozems, which cover about 60 % of the Ukrainian territory. The aim of the research is to defi ne the most eff ective soil conservation practices and legislative decisions aimed to conservation/recovering the Ukrainian chernozem fertility. The experimental data of the agrochemical certifi cation of Ukrainian lands, data from scientifi c papers, stock and instructional materials as well as our own fi eld and laboratory studies were used. It has been established that the long-term use of deep subsurface tillage on typical chernozem increases, compared with plowing, the content of 10–0.25 mm of air-dry and water-resistant aggregates, the bulk density, soil water storages, water infi ltration rates, the content of mobile phosphorus and exchangeable potassium, pHH2O, CaCO3 stocks, the contents of humic and fulvic acids, molecular weights of humic acids – by 5.5 and 3.06 %; 0.05 g/cm3; 25.5 mm; 22.6 mm/h; 0.1 and 3 mg/100 g of soil; 0.03 pHH2O; 18 t/ha, 0.02 and 0.04 %, 91195 kDa, respectively. Fertilizers may contribute to the crop yields increase from by 60% in the Polissya, by 40 % – in the Forest Steppe, by 15 % – in the Wet Steppe, by 10 % – in the Dry Steppe and by 40 % – in the Irrigated Steppe areas. In soil-conservation rotations, the crop placement and alternation are advisable to combine with strips or hills sowing, taking into account the local relief features; soil alkalinization, applying anti-erosion structures. Ukrainian agriculture will receive additional 10–12 million tons of forage units or 20–22 % from all fodder in a fi eld agriculture under increasing 8–10 % of arable lands for intercrops. It is advisable to mulch the eroded chernozems of Ukraine depending on their texture composition: 1.3 t/ha of mulch for sandy and loamy soils, 1.9 t/ha – for sandy and 1.1 t/ha – for loamy soils. The implementation of soil conservation agriculture can minimize some soil degradation processes and improve eff ective soil properties required to realize the biological potential of cultivated plants. Key words: chernozem, degradation, fertility, soil conservation technologies, agriculture policy.

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Torqueti, Sabrina Thereza dos Santos, Karina Volpi Furtini Boldrin, Ângela Maria Pereira do Nascimento, Patrícia Duarte de Oliveira Paiva, Antônio Eduardo Furtini Neto i Iracema Clara Alves Luz. "Alternative potassium source for the cultivation of ornamental sunflower". Ciência e Agrotecnologia 40, nr 3 (czerwiec 2016): 257–64. http://dx.doi.org/10.1590/1413-70542016403036115.

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ABSTRACT Brazil is dependent on importation of fertilizers, especially the potassics. Rocks and minerals that contain nutrients have a potential for use in agriculture as fertilizer, especially those of slow solubilization and that exhibit residual effect. In this context, the objective was to assess the feasibility of glauconite rock as potassium source for the cultivation of ornamental sunflower. The experiment was conducted under controlled conditions arranged in an entirely randomized design, in a 4x4 + 4 factorial scheme, with four replicates and one plant per plot. Four glauconite-based fertilizers were used as a potassium source: fine grained glauconite, fine grained organo-mineral glauconite, coarse grained glauconite and coarse grained organo-mineral glauconite, in four doses, as well as an additional treatment with four doses of KCl, the principal conventional source of the nutrient. The height of the flower stalks, the diameter of the stem and floral capitulum, the number of cultivation days and post-harvest durability were evaluated. The application of KCl yielded the production of flower stems with greater height and larger capitulum diameter in relation to the supply of glauconite. Among the glauconite based fertilizers, the fine grained organo-mineral product provided the best flower charateristics. The postharvest commercial durability of the flower stalks was higher in plants that received the glauconite and fine grained organo-mineral glauconite. The fine grained organo-mineral glauconite surpasses all other alternative sources of potassium in relation to the agronomic characteristics evaluated.

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Xiao, Jiu Jin, Hong Xing Ma i Chuang Tai Lu. "Study on Spatial Distribution of Soil Nutrients and Comprehensive Evaluation of Nutrients in Low Mountain-Hilly Region of Sichuan Province, China". Applied Mechanics and Materials 295-298 (luty 2013): 2544–48. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.2544.

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It is generally accepted that to overuse fertilize can led to cause fertilize resource waste, increase agriculture production cost, reducing the quality of agricultural products, and cause agricultural non-point source pollution. Determining soil nutrient distribution is critical to identify sites which are at risk of N, P and K nutrition loading. In order to know the soil nutrition spatial distribution and to determine agricultural rational fertilization, a total of 98 soil samples from the plow layer (0-20 cm) were collected in low mountain-hilly region of Sichuan Province, China. Spatial variability and distribution of soil organic matter (SOM), total N (TN), available nitrogen (AN), available phosphorus (AP) and available potassium (AK) in agricultural soils were studied using geographic information system (GIS) software. And the analytical hierarchy process (AHP) was used to determine the weight of indexes by using quantitative analysis.

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Hidayat, Yayat, Kukuh Murtilaksono i Naik Sinukaban. "Characterization of Surface Runoff, Soil Erosion and Nutrient Loss on Forest-Agriculture Landscape". Journal of Tropical Soils 17, nr 3 (25.01.2013): 259–66. http://dx.doi.org/10.5400/jts.2012.v17i3.259-266.

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The study was aimed to quantify volume of surface runoff, soil erosion and nutrient loss from the forest-agriculture landscape (forest margins) in Lore Lindu National Park Central Sulawesi. Surface runoff volume and soil erosion were measured daily on erosion plots. It was installed on several land use types i.e. forest land, maize, young cocoa, medium cocoa, old cocoa, vanilla, shrub and bush and bareland, on the soil Typic Dystrudepts with slope ± 40%. The nutrient content in surface runoff and sediments were analyzed from selected surface runoff and sediment samples. Surface runoff and soil erosion from agriculture land were respectively 2.1 to 3.4 and 3.6 to 5.8 times higher than from forest lands. Meanwhile, surface runoff and soil erosion from bareland were respectively 7.0 and 23.7 times greater than forest land respectively. Sediment nutrient contents from forest land were higher than agriculture land. In the contrary, total nutrient lost from agriculture land were higher than forest land ones. Nutrient losses carried by surface runoff were larger than those losses carried by sediments. Dissolved organic carbon (DOC) loss in surface runoff was 6,1 to 8,0 times higher than total organic carbon (TOC) loss in sediments. Likewise, nitrate (NO3-) loss in surface runoff was 1.9 to 12.1 times higher than total nitrogen (TN) in sediments as well as potassium, calcium, magnesium and sodium losses. Potassium is dominant cation loss carried by the surface runoff, while calcium is mainly carried by sediment.Keywords: Dissolve organic carbon; forest-agriculture landscape; nutrient loss; soil erosion; surface runoff[How to Cite: Hidayat Y, K Murtilaksono and N Sinukaban. 2012. Characterization of Surface Runoff, Soil Erosion and Nutrient Loss on Forest-agriculture Landscape. J Trop Soils, 17 (3): 259-266. doi: 10.5400/jts.2012.17.3.259][Permalink/DOI: www.dx.doi.org/10.5400/jts.2012.17.3.259]

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AKSU, Gizem, i Hamit ALTAY. "THE EFFECTS OF POTASSIUM APPLICATIONS ON DROUGHT STRESS IN SUGAR BEET: PART II. PLANT NUTRITION CONTENT". Journal of Scientific Perspectives 4, nr 3 (5.08.2020): 203–16. http://dx.doi.org/10.26900/jsp.4.015.

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This is the second in a series of papers describing the effects of potassium applications on drought stress in sugar beet. Drought is a natural phenomenon that can affect water resources and agriculture. In this research, the effect of potassium applications under drought stress on some plant nutrition of sugar beet, which is a strategic plant, was investigated. In the experiment, irrigation levels were kept at 33%, 66% and 100% of field capacity. Different doses (10-20-40-80 mg kg-1) of potassium were applied to the plants. The plants were grown in the growth chamber under controlled conditions (day/night 16/8 hours, 25/15 0C, 60-70% humidity). According to the results, the effect of irrigation x potassium interaction on the shoot and root sodium (Na) potassium (K) calcium (Ca) and phosphorus (P) content Na/K and Na/K ratio was found to be statistically significant. Shoot and root sodium content decreased with potassium applications under drought conditions (33%). Shoot and root potassium, phosphorus content increased with potassium applications in both drought and sufficient water conditions. Shoot calcium content change irregular with potassium application while root calcium decreased with potassium application under drought conditions (33%). Shoot and root sodium/potassium ratio decreased with potassium applications in both drought and sufficient water conditions. Shoot and root sodium/calcium ratio change irregular with potassium applications. Therefore, it can be said that potassium may play a critical role in reducing the negative effect of drought stress and uptake plant nutrition in sugar beet.

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Sattar, Abdul, Ahmad Sher, Muhammad Ijaz, Muhammad Kashif, Muhammad Suleman, Muhammad Usman Ali, Aown Abbas i Asif Mahboob. "Exogenous application of potassium improves the drought tolerance in chickpea". Journal of Arable Crops and Marketing 2, nr 1 (30.06.2020): 31–34. http://dx.doi.org/10.33687/jacm.002.01.3185.

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Drought is one of the major agricultural problems which cause losses to crop productivity. It is a worldwide problem and prevails in many parts of the world as a major threat to agriculture. Potassium (K) is considered to be an essential nutrient that plays an important role in growth, development and defense response in the plant under stressful conditions. This work investigated the effects of K in drought tolerance of chickpea seedlings by examining growth, photosynthetic performance, total osmo-regulation substance contents and antioxidative enzymes subjected to drought stress. The drought stress impaired the growth (root and shoot dry weight, root: shoot ratio, seedlings biomass), water relations, photosynthetic attributes, transpiration rate and chlorophyll contents and anti-oxidants activity of chickpea seedlings. Nonetheless, the foliar application K improved the growth, water relations, photosynthetic attributes, transpiration rate, chlorophyll contents and anti-oxidative activity of chickpea under drought conditions. Moreover, an increase in antioxidant enzyme activity and accumulation of osmoprotectants (proline, soluble protein and soluble sugar) was noted under stressed conditions, which was more pronounced in chickpea which experienced of K application. To conclude that, foliar application of K mitigated the adverse effect of drought, K was proved to be even more effective in alleviating the adverse effect of drought stress on chickpea.

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Panhwar, Muhammad Yousif, Sallahuddin Panhwar, Hareef Ahmed Keerio, Nadar Hussain Khokhar, Sabab Ali Shah i Nasreen Pathan. "Water quality analysis of old and new Phuleli Canal for irrigation purpose in the vicinity of Hyderabad, Pakistan". Water Practice and Technology 17, nr 2 (27.01.2022): 529–36. http://dx.doi.org/10.2166/wpt.2022.006.

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Abstract Irrigation-water quality plays an important role in agriculture productivity. In this study, water quality of the old and new Phuleli canal located in Hyderabad, Pakistan, was characterized for irrigation purpose. Water samples were collected from four different locations of both the old and new Phuleli canal. Twelve different irrigation-water quality standards were assessed under the study: pH, Electricity Conductivity, Biochemical Oxygen Demand (BOD), Total Dissolved Solids, Chemical Oxygen Demand (COD), Dissolved Oxygen, Calcium, Magnesium, Sodium, Potassium, Sodium adsorption ratio, Fecal Coliforms. The results showed that the Electricity Conductivity ranges from 910–3,090 MS/cm, Potassium 13–112 mg/l, BOD 61–285 mg/l, COD 97–361 mg/l and Fecal Coliforms 400–2,350 MPN/100 ml concentrations in water of both canals were higher than the National Environmental Quality Standards permissible limits. It was found that the water quality parameters were higher than the permissible pollution level of canal water for the use of irrigation in agriculture.

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