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Letteratura scientifica selezionata sul tema "Wheat fertilizers"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 21 febbraio 2023

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Articoli di riviste sul tema "Wheat fertilizers"

Hossain, Akbar, MAZ Sarker, MA Hakim, Mst T. Islam e ME Ali. "Effect of Lime, Magnesium and Boron on Wheat (Triticum aestivum L.) and Their Residual Effects on Mungbean (Vigna radiata L.)". International Journal of Agricultural Research, Innovation and Technology 1, n. 1-2 (22 febbraio 2013): 9–15. http://dx.doi.org/10.3329/ijarit.v1i1-2.13923.

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The study was carried out during 2007-2008 season in the research field of Wheat Research Centre, Bangladesh Agricultural Research Institute, Dinajpur to know the effect of lime, Magnesium (Mg) and Boron (B) on yield and yield components of wheat and also their residual effect on mungbean. The geographical position of the area is between 25°62´ N, 88°63´ E and 38.20 meter above sea level. The experiment was laid out in Randomized Complete Block Design with three replications, both in wheat and mungbean. Treatments for wheat were (I) recommended fertilizer + Mg + B, (II) recommended fertilizer + lime + B + Mg, (III) recommended fertilizer + lime + Mg, (IV) recommended fertilizer + lime + B and (V) control (Only recommended fertilizer) and for mungbean were (I) recommended fertilizer + Mg + B, (II) 75% of recommended dose, (III) recommended fertilizer + B, (IV) recommended fertilizer + Mg and (V) control (without fertilizers). Results showed that the highest yield and yield components of wheat were recorded from recommended fertilizers + lime + B + Mg treated plot and the second highest were recorded from recommended fertilizers + lime + Mg treated plot. The lowest was recorded in control plot (only recommended fertilized). In case of mungbean the highest was found from recommended fertilizers + B treated plot, this treatment was limed in previously cultivated wheat crop and the lowest was recorded from control plot (without fertilizer). DOI: http://dx.doi.org/10.3329/ijarit.v1i1-2.13923 Int. J. Agril. Res. Innov. & Tech. 1 (1&2): 9-15, December, 2011

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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, n. 3 (1 agosto 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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HU, CHENG, SHUANG-LAI LI, YAN QIAO, DONG-HAI LIU e 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, n. 3 (18 novembre 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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Alexandra LEONTE, Alina AGAPIE, Paula Lucelia PINTILIE, Adina Cătălina DRUȚU, Georgiana AMARGHIOALEI e Sabina EȘANU. "RESEARCH REGARDING THE INFLUENCE OF NITROGEN AND PHOSPHORUS FERTILIZERS ON WINTER WHEAT, IN THE PEDOCLIMATIC CONDITIONS IN CENTRAL OF MOLDAVIA". LIFE SCIENCE AND SUSTAINABLE DEVELOPMENT 2, n. 2 (26 dicembre 2021): 52–57. http://dx.doi.org/10.58509/lssd.v2i2.128.

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Winter wheat is one of the agricultural plants that reacts positively to the application of fertilizers in all soil and climatic conditions in our country. Factors that influence the effectiveness of fertilizers and create dosing difficulties, require the organization of a certain long-term experience for complex research of complex interactions plant x soil x fertilizer x climate and their effect on plant productivity, established in Secuieni in 1975. This paper presents the results obtained in a long-term experience with chemical fertilizers (NP) in winter wheat crop, located in Agricultural Research and Development Station Secuieni Neamț (A.R.D.S. Secuieni, Neamț), during 2019-2021. The experience takes place in the experimental field of the unit, on a typical cambic faeoziom (chernozem) soil, with medium texture, and its an bifactorial type (N x P) and were placed according to the method of subdivided plots, in five repetitions: the factor A phosphorus, with the following graduations: P0, P40, P80, P120 and P160 and factor B nitrogen, with the following graduations: N0, N40, N80, N120 and N160. The winter wheat culture is part of a three-year crop rotation with beans – winter wheat - corn. Following in rotation after beans, no nitrogen fertilizers were applied at the establishment of the crop. The variety studied is the Glosa variety, created at N.A.R.D.I. Fundulea (National Institute for Agricultural Research and Development Fundulea). In the climatic conditions of the two experimental years (2019-2021) the yields obtained from the application of chemical fertilizers varied depending on the applied dose. In the first year of testing, the yield varied in very high limits, from 3232kg ha-1 in the non-fertilized version and up to 6525 kg ha-1 in the version fertilized with N120P80. In the second year, the minimum yield was obtained in the version in which no fertilizer was applied dose, of 6133 kg ha-1, and the variant in which the fertilizer doses of N120P120 were applied obtained the highest yield, of 9429 kg ha-1. On average, the factors studied greatly influenced winter wheat yield, which variet within large limits, between 4683 kg ha-1 (N0P0) and 7787 kg ha-1 (N120P120).

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Vlasiuk, О. S. "EFFICACY OF MICROBIAL PREPARATIONS IN GROWING SPRING WHEAT DEPENDING ON THE FERTILIZATION BACKGROUND". Agriciltural microbiology 31 (7 luglio 2020): 51–56. http://dx.doi.org/10.35868/1997-3004.31.51-56.

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Objective. Develop a fertilization system for spring wheat based on the use of effective compositions of nitrogen-fixing and phosphorus-mobilizing bacteria, which will help to reduce the spreadof disease and increase the productivity of agrocenoses. Methods. Field, measuring- and weightbased, calculation, mathematical and statistical. Results. The influence of mineral fertilizers, aftereffects of green manure, treatment of seeds with biopreparations and spraying of crops with Biocomplex-BTU on the parameters of productivity and exposure of spring wheat to powdery mildewhas been shown. It was found that pre-sowing bacterization of seeds increases yields by 3.3–12.4 %, depending on the biopreparations and fertilization background. Under the action of mineral fertilizers both separately and against the background of the after-effect of green manure, theyield increased by 31.7–41.2 %, compared with the variant without fertilizers and without inoculation. Treatment of spring wheat leaf with Biocomplex-BTU increased yield by 3.6–7.2 %, dependingon fertilizer and pre-sowing bacterization of seeds. Inoculation of seeds and treatment of crops withbiopreparations results in increase in the number and length of productive stems and grains inthe ear, although the use of fertilizers increases these parameters more significantly. Conclusion. Treatment of wheat seeds with bacterial preparations has a higher percentage efficiency in areas without fertilizers compared with fertilized ones, as well as in less favourable years for thegrowth of spring cereals, compared with more favourable. Seed inoculation with Polimiksobakterynin combination with the treatment of crops with Biocomplex-BTU, which, depending on the fertilizer, increases the crop yield by 0.54 to 0.73 t/ha, is the most effective. Crop treatment with Biocomplex-BTU significantly reduces exposure to powdery mildew.

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Youssef, Mohamed Ahmed, Arwa Abdulkreem AL-Huqail, Esmat F. Ali e Ali Majrashi. "Organic Amendment and Mulching Enhanced the Growth and Fruit Quality of Squash Plants (Cucurbita pepo L.) Grown on Silty Loam Soils". Horticulturae 7, n. 9 (28 agosto 2021): 269. http://dx.doi.org/10.3390/horticulturae7090269.

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Adoption of suitable organic fertilizers and soil mulching are useful tools to enhance soil quality, which will inevitably lead to improved growth and yield of crops. Little is known about the soil organic amendments and Azolla (Azolla pinnata) under soil organic mulching on the growth and yield of squash plant (Cucurbita pepo L.). A comparative study mainly focused on the impacts of organic fertilizer treatments on soil fertility and squash growth under wheat straw mulch was conducted on wooden boxes filled with silty loam soil. Wheat straw, as an organic mulch, and five organic-fertilization treatments were added to the soil. Wheat straw with a size of <2 cm was added to the soil surface with a 2 cm thickness. The fertilization treatments were: control (CO), chemical fertilizer (CF), compost (CT), vermicompost (VC), and dry Azolla (DA). Wheat straw mulch had positive effects on the soil properties, growth, and yield. The maximum fruit yield was obtained from the soil fertilized with DA under wheat straw mulch, while the lowest one was found in the control without mulching. Azolla and organic fertilizers showed a remarkable superiority over the mineral fertilization in increasing the soil fertility as well as the growth and quality of squash fruits; this superiority increased under the wheat straw mulching system. The application of recommended mineral fertilization (CF), compost (CT), vermicompost (VC), and dry Azolla (DA) under wheat straw mulch increased the soil available-N by 2, 20, 12, and 29%, respectively, above the control (CO), while these organic fertilizers without mulching increased the soil available-N by 11, 32, 26, and 48%, respectively. The production of vegetable crops such as squash plants requires the addition of organic fertilizers and mulching to increase yield and quality of fruits.

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ZENTNER, R. P., C. A. CAMPBELL, E. D. SPRATT e H. REISDORF. "EFFECT OF CROP ROTATION AND N AND P FERTILIZER ON YIELDS OF SPRING WHEAT GROWN ON A BLACK CHERNOZEMIC CLAY". Canadian Journal of Plant Science 67, n. 4 (1 ottobre 1987): 965–82. http://dx.doi.org/10.4141/cjps87-134.

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The effects of crop sequence, rotation length, and fertilization on yields of spring wheat were examined for 14 crop rotations over a 25-yr period on a Black Chernozemic heavy clay soil at Indian Head, Saskatchewan. Plots that were fertilized with N and P received the generally recommended rates for the region during the first 18 yr but in the last 7 yr fertilizers were applied based on soil tests. Yields of fertilized wheat grown on fallow were similar for the 2-yr fallow-wheat and the 3-yr fallow-wheat-wheat rotations (25-yr avg. 2505 kg ha−1). Yields of fertilized wheat grown on stubble were also similar within the monoculture rotations. During the first 18 yr, yields of fertilized stubble-wheat averaged 1656 kg ha−1 or about 64% of comparable fallow-wheat yields; but, during the last 7 yr, stubble-wheat yields were generally similar to those obtained on fertilized fallow. Removal of the straw each year from a 3-yr fallow-wheat-wheat rotation did not affect fallow- or stubble-wheat yields. Application of recommended rates of N and P fertilizer increased the 25-yr fallow-wheat yields by 11% (from 2254 to 2505 kg ha−1); the yield increases were significant about 70% of the time. On stubble, application of N and P fertilizer increased wheat yields by 47% (from 1130 to 1656 kg ha−1) during 1960–1977 and by 142% (from 935 to 2263 kg ha−1) during 1978–1984. The yield increase from fertilizing stubble-wheat was significant in 24 of 25 yr. Including grass-legume forage, or legume green manure crops in the rotation increased yields of wheat grown on the unfertilized partial fallow by 15–24% and on unfertilized stubble by 33–71%; the yields were similar and sometimes higher than those obtained on fallow in the well-fertilized monoculture wheat rotations. In comparison, the yields of unfertilized stubble-wheat in the cereal-forage rotations were generally similar to those obtained on fertilized stubble in monoculture rotations during 1960–1977, though they were lower during 1978–1984 when the monoculture rotations began receiving fertilizer based on soil tests. Yields of wheat grown on flax stubble that received fertilizer at the average rate of 68 kg ha−1 N plus 22 kg ha−1 P2O5 since 1978 were generally similar to yields obtained on fertilized fallow (avg. 2546 kg ha−1). These yields averaged 13% higher than yields of wheat grown on cereal stubble in monoculture rotations that received slightly more fertilizer N. Yields of fallow- and stubble-wheat were generally maintained over time with the application of recommended rates of N and P fertilizers, or by inclusion of legume-forage crops in the rotation, but yields of unfertilized stubble-wheat declined with time possibly reflecting declining soil fertility.Key words: Wheat, nitrogen and phosphorous fertilizer, crop sequence, cereal forage rotations, legume green manure crops

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Lupu, Cornelia, Cătălina Druţu, Lorena-Diana Popa e Margareta Naie. "Influence of Chemical Fertilizers Application on Autumn Wheat Yield in Long-Term Experiences at Agricultural Research and Development Secuieni, Neamţ County, Romania". Cercetari Agronomice in Moldova 47, n. 3 (1 settembre 2014): 27–38. http://dx.doi.org/10.2478/cerce-2014-0024.

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Abstract The current paper intends to interpret from a technical point of view the data and yield functions which resulted from applying different fertilizer doses with nitrogen and phosphorus. The analyzed parameters (yield, yield increase, marginal increase) represent basic elements with determining role in establishing the doses and approximating the economic efficiency when applying fertilizers. The data comes from a long time experience with chemical fertilizers at Agricultural Research and Development Station (A.R.D.S.) Secuieni, Neamţ county, Romania, since 1975 and examines the results obtained between 2010-2012. As a result of nitrogen and phosphorus chemical fertilizers application (compared to the unfertilized version N0P0), were achieved yield increases of 5-56%, representing 234-2342 kg/ha. The resulted yield have been influenced by the fertilizer’s type but also by the weather conditions in the research period. The use of phosphorus fertilizers in doses of P40-P160 brought medium yield increases compared to the unfertilized version P0 of 5-13% representing 256-681 kg/ha, and those with N40-N160 nitrogen brought medium increases (compared to the unfertilized version N0) of 15 -35% representing 599-1584 kg/ha. The production increases were directly correlated with the doses used, establishing highly significant correlations. The yield increases achieved by applying 1 kg of fertilizer active matter had medium values of 4.25-8.82 kg wheat/kg active matter P2O5 at phosphorus fertilizers and 9.9-14.97 kg wheat/kg active matter N at nitrogen fertilizers. These increases were indirectly correlated with the applied doses.

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Chertkova, N. G., T. I. Firsova, Yu G. Skvortsova, G. A. Filenko e R. O. Ryabov. "The use of complex fertilizers in seed production of winter wheat varieties". Grain Economy of Russia 1, n. 2 (2 maggio 2021): 52–57. http://dx.doi.org/10.31367/2079-8725-2021-74-2-52-57.

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The current paper has presented the results of the estimation of productivity of the winter wheat varieties ‘Krasa Dona’, ‘Polina’ and ‘Yubiley Dona’ when using liquid complex fertilizers ‘Strada N + Mono Sulfur (S)’, ‘Strada P + Mono Sulfur (S)’ and ‘Diform Silicon-potassium’. The treatment of winter wheat plants was carried out in the form of foliar top-dressings in the stages of tillering and stem extension. The study was carried out on the basis of the FSBSI “Agri- cultural Research Center “Donskoy” in 2019-2020. The trials were laid in the crop rotation of the laboratory for primary seed production and seed study. The purpose was to study the effect of liquid complex fertilizers on the productivity of the studied winter wheat varieties. When using fertilizers for all varieties, there was a tendency to an increase in the density of the productive stand on 18-61 pcs/m2 in comparison with the control. The variety ‘Krasa Dona’ showed the best indicators of the traits ‘number of grains per head’, ‘grain weight per head’ and ‘1000 grain weight’ being fertilized with ‘Strada N + S’ (43 pcs., 2.19 g and 45.7 g) and ‘Diform Silicon-potassium’ (46 pcs., 2.30 g and 46.5 g). The variety ‘Polina’ showed good results after being treated with ‘Strada P + S’ (48 pcs., 2.30 g and 42.1 g) and ‘Diform Silicon-potassium’ (51 pcs., 2.43 g and 42.4 g). The variety ‘Yubiley Dona’ showed the greatest increase of the trait ‘number of grains’ with the fertilizer ‘Diform Silicon-potassium’. The trait ‘1000 grains weight’ had an increase of 2.3 g, and ‘grain weight per head’ was 0.29 g. The treatment with fertilizers did not affect the trait ‘plant height’. The highest productivity of the variety ‘Krasa Dona’ was obtained when being fertilized with ‘Strada N + S’ (9.4 t / ha) and ‘Diforma Silicon-potassium’ (9.5 t/ha); the productivity of the variety ‘Polina’ increased after ‘Strada P + S’ (8.8 t/ha) and ‘Diform Silicon-potassium’ (9.1 t/ha), and the productivity of the variety ‘Yubiley Dona’ increased after ‘Diform Silicon-potassium’ (8.9 t/ha). The maximum economic effect (19080 rubles/ha) with 9.5 t/ha of productivity was obtained from the variety ‘Krasa Dona’ after the treatment with the fertilizer ‘Diform Silicon-potassium’. The experimental results have shown that the use of complex fertilizers has a positive effect on the productivity of winter wheat plants.

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Malhi, S. S. "Effects of four consecutive annual applications of elemental S and sulphate-S fertilizers on yield, S uptake and seed quality of wheat". Canadian Journal of Plant Science 86, n. 2 (5 maggio 2006): 399–412. http://dx.doi.org/10.4141/p05-115.

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A field experiment from 1999 to 2002 was carried out near Tisdale in northeastern Saskatchewan on a S-deficient Gray Luvisol (Typic Cryoboralf) soil to compare the effects of elemental S and sulphate-S fertilizers on yield, seed protein, total S concentration, S uptake, and recovery of applied S in wheat (Triticum aestivum L.) and residual SO4-S in soil. Treatments were combinations of 10 and 20 kg S ha-1 rates applied in autumn and spring for two granular bentonitic elemental S fertilizers (ES- 90 and ES-95), one fertilizer containing both elemental S and sulphate-S (Agrium Plus), and ammonium sulphate, plus a zero-S control. The S fertilizers were surface-broadcast and all plots had a preseeding rotovation in spring to incorporate fertilizers into the soil. Seed (1 yr) and straw (3 yr) yield, seed protein concentration (1 yr), and total S concentration and S uptake in seed and straw (all years except uptake of S in seed in 2001 and 2002) showed significant response to S fertilization. Ammonium sulphate and Agrium Plus were generally more effective compared with the elemental S fertilizers, when there was a significant response to sulphate-S containing fertilizers. Autumn application of elemental S fertilizers was sometimes more effective than spring application, while an opposite trend was observed for sulphate-S containing fertilizers in some cases. The increase in S rate from 10 to 20 kg S ha-1 tended to increase the measured wheat parameters in many elemental S treatments, but for sulphate-S fertilizers the effect was less pronounced. The concentration of total S in seed and straw was relatively more responsive to S fertilization than yield and S uptake, particularly for seed. The effect of S fertilization on wheat was less pronounced in drought years, particularly on seed yield, suggesting that drought rather than S availability was limiting wheat growth. There was some build-up of residual SO4-S in the 0-60 cm depth of soil in many S fertilizer treatments after four successive applications, but there was little or no difference in soil SO4-S between elemental S and sulphate-S fertilizers. In conclusion, the results from four successive annual applications of elemental S and sulphate-S fertilizers in autumn and spring on the same area indicate that bentonitic granular elemental S fertilizers had comparatively less influence on wheat than granular sulphate-S fertilizers and further research to improve the effectiveness of these elemental S fertilizers is suggested. Key words: Elemental S, fertilizer, protein, seed quality, sulphate-S, wheat, yield

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Più fonti

Tesi sul tema "Wheat fertilizers"

Norrish, Shane A., University of Western Sydney, of Science Technology and Environment College e School of Environment and Agriculture. "Soil and water interactions controlling wheat crop response to phosphorus fertiliser in north-western New South Wales". THESIS_CSTE_EAG_Norrish_S.xml, 2003. http://handle.uws.edu.au:8081/1959.7/613.

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This thesis examines the response to P fertiliser by wheat crops growing in the vertosol soils of the low rainfall areas of the northern grain zone of eastern Australia. Farmers in this region depend on water accumulated from rainfall over a fallow period and stored in the subsoil to increase wheat grain yield beyond that normally achievable from in-crop rainfall and to decrease the production risks due to rainfall variability. The large variability in stored water, seasonal rainfall and subsoil properties result in extremely varied yield and yield responses to P fertiliser between seasons and between sites. Finally, as a practical guide to predicting wheat response to P fertilizer: 1/. current sampling strategies of determining P only in the surface 10 cm appear to be adequate for soils with bicarbonate P concentrations greater than 15 mg/kg. 2/. For soils with lower concentrations in the surface, sampling of 80 cm is recommended. Crops with a mean concentration of bicarbonate P greater than 7 mg/kg between 10 - 80 cm are unlikely to respond to P fertiliser. 3/. No increase in profitable grain yield response was found for fertiliser applications greater than 10 kg P/ha.
Doctor of Philosophy (PhD)

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Feland, Calli. "Nitrogen Fertilizer Types and Application Timing on Hard Red Spring Wheat Productivity and Grain Protein". Thesis, North Dakota State University, 2017. https://hdl.handle.net/10365/29209.

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The balance of improving hard red spring wheat (Triticum aestivum L. emend Thell) yield while maintaining grain protein concentration continues to be a challenge in agriculture. The objective of the field research was to evaluate N fertilizer types, additives, rates, and application timing to find N management strategies that improved the efficiency of the applied N with regards to both grain protein and yield. Another aspect of this study was to determine if ground-based active sensor data can predict grain yield and/or protein content. Fertilizer treatments consisted of 2 application timings, 3 sources of N, 3 rates of N, and 2 additive types. Spring applications improved grain protein and yield compared to fall applications. Polymer coated urea shows promise in improving grain protein over urea alone. However, profitability is dependent on environmental factors that may influence N availability, as well as prices at the time that the grain is marketed.
Minnesota Wheat and Promotion Council

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Richardson, Paul. "Intercellular distribution of nitrate in wheat leaves". Thesis, Bangor University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357712.

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Adogla-Bessa, Tsatsu. "Enzyme treatment of whole-crop wheat silage". Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278039.

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Migner, Pierre. "The effect of seeding density and nitrogen fertility on the yield and quality of a hard red spring wheat in Quebec /". Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56675.

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An experiment was conducted for two years to determine the effect of seeding rate, and nitrogen fertility on the yield and quality of hard red spring wheat (Triticum aestivum L.) in Quebec. The experiment was conducted on a Ste-Rosalie series soil (humic gleysol), in the St-Hyacinthe region, 50 km east of Montreal. The design of the experiment was a split-plot design. The treatments in the main plots were the plant densities while the nitrogen treatments (rate of nitrogen, number and timing of the applications and formulation of fertilizer nitrogen) were applied to the sub-plots. Nitrogen had a significant effect on yields in 1987, but not in 1986. Maximum yield was 6838 kg ha$ sp{-1}$ in 1986 and 3807 kg ha$ sp{-1}$ in 1987. Protein concentration was increased by higher nitrogen rates in both years. The yield and protein concentration were affected by low precipitation in 1987. Applying the nitrogen later in the season increased the protein concentration in both seasons. It also decreased yield in 1987, but this was caused by lack of water in late June and July 1987. Formulation of nitrogen fertilizer did not have an effect on yield and protein content of the crop.

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Ayoub, Micheline. "Nitrogen management for bread wheat production in Quebec". Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69574.

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The effect of level and timing of nitrogen (N) fertilizer application on grain yield (YLD), grain protein (GPC), and breadmaking ability of four hard red spring wheat cultivars and on soil residual nitrate was investigated. Nitrogen fertility caused an increase in YLD, lodging, several yield components, GPC, and breadmaking quality and caused a reduction in N harvest index and grain ash, and N use efficiency (NUE) resulting in an increase in soil residual NO$ sb3$-N. Split N application reduced lodging, tillers and spikes m$ sp{-2}$ and caused an increase in grain weight, GPC, loaf volume and NUE. Grain yield increases were largely due to increases in the grain spike$ sp{-1}$ and tillers n$ sp{-2}$. Absolute protein content was found to be critical in determining GPC. Cultivars showed plastic responses to N. Despite its high YLD and flour yield, Hege 155-85 may be risky to produce because of its high dependence on N. Mineralization of N occurred during winter. Marked differences existed between the sites.

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Yu, Shaobing. "Winter wheat nitrogen management in south coastal British Columbia". Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29888.

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Nitrogen is essential to obtain high yields of winter wheat in south coastal British Columbia, which includes Vancouver Island and the lower Fraser Valley. An accurate recommendation for N application is required to keep input costs down for most economical returns and to limit environmental problems related to leaching of excess N. The questions are how much, when and which form of N should be applied to winter wheat. The general objective of this study is to improve our understanding of winter wheat growth and N uptake. This study monitors the soil N supply and characterizes the plant development, dry matter accumulation, and N uptake of winter wheat in South Coastal B.C.. Also, it compares the effectiveness of conventional and intensive crop N management and urea and ammonium nitrate sources of fertilizer N under intensive crop management. A series of field experiments was conducted in 1986-87 and 1987-88 with winter wheat to evaluate conventional and intensive N management in the area. Additionally, a N source study was carried out in the latter year to compare ammonium nitrate and urea. Soil N supply for winter wheat ranged from 52 to 151 kg N/ha through the two years of field experiments at five sites. Available N in the 0-50 cm soil depth varied from 10 to 100 kg N/ha through the growing season in the different treatments. An accurate estimate of N behavior involves N accumulation in the crop. During the early spring until harvest, the crop dry matter yield and N uptake patterns were plotted. The grain yields ranged from 4 to 9 t/ha for the conventional management (75 kg N/ha), and from 4 to 11 t/ha for the intensive crop management (I.CM. 225 kg N/ha) system. Between the conventional and I.CM., there was no significant difference in grain yield but there was in quality, specifically grain protein. Grain protein ranged from 8.2 to 9.7% for the conventional and from 10 to 13.7% for the I.CM. treatment. Also, there was no difference in grain yield or quality between ammonium nitrate and urea fertilized plots at final harvest. However, in the early stage at GS31, crop took up more N from ammonium nitrate (97 kg N/ha) than from urea (75 kg N/ha) and soil mineral N levels with urea were higher than with ammonium nitrate.
Land and Food Systems, Faculty of
Graduate

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Miransari, Mahabadi Mohammad Reza. "Development of a nitrogen soil test for fertilizer requirements for corn and wheat production in Quebec". Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23415.

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One must consider the effects of both soil N and fertilizer N, if rates of N-fertilizer application are to be optimized and NO$ sb3 sp-$ leaching into groundwater be controlled. Objectives were (1) to determine soil $ rm NO sb3 sp-$-N and NH$ sb4 sp+$-N, soil total N, and N fertilizer levels and corn and wheat yields; and, (2) to determine soil sampling times and depths for N analyses that correlated with yields and fertilizer N response. Soil samples taken at seeding and postseeding were analyzed for NH$ sb4 sp+$-N and NO$ sb3 sp-$-N, and for total N in 29 wheat sites and 44 corn sites fertilized with four rates of N. N-Trak (quick test) and laboratory methods were employed to measure soil NO$ sb3 sp-$-N. A significant correlation was found between N-Trak and laboratory methods (R$ sp2$ = 0.61$ sp{**}$ for corn and 0.89$ sp{**}$ for wheat). Compared to the laboratory method, N-Trak overestimated soil NO$ sb3 sp-$-N. Soil NO$ sb3 sp-$-N levels increased upon drying. In some cases soils showed an increase in soil NO$ sb3 sp-$-N from seeding to postseeding. Wheat yields and wheat grain N uptake were better correlated with soil NO$ sb3 sp-$-N at seeding than at postseeding. For corn, yields and grain uptake showed a higher correlation with soil NO$ sb3 sp-$-N at postseeding. Corn regression models predicted 180 to 240 kg ha$ sp{-1}$ of N fertilizer to obtain optimum economic yields and 0 to 40 kg ha$ sp{-1}$ N for wheat. Soil total N was not correlated with corn yields as highly as soil NO$ sb3 sp-$-N. Soil NO$ sb3 sp-$-N can be used as an indicator of fertilizer N requirements for corn and wheat in Quebec.

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Norrish, Shane. "Soil and water interactions controlling wheat crop response to phosphorus fertiliser in north-western New South Wales". View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20051013.115006/index.html.

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Kgope, Barney Stephen. "Effects of sustained elevated CO2 concentration and Nitrogen nutrition on wheat (Triticum aestivum L. cv Gamtoos)". Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1003774.

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There is consensus that high CO2 results in enhanced growth and yield for most crop plants. However, most of these studies were carried out in the presence of adequate nutrients, which is also the case in agricultural systems (managed ecosystems). About 20% of the earth’s land mass have sufficiently low levels of nutrients to cause some kind of stress to plants. On the other hand, elevated [CO2] decreases foliar nutrient elements in plants and as a result partitioning of certain nutrient elements in plants is altered. Little data is available on the partitioning of most nutrient elements in plants, and this will definitely impact on growth and yield. To investigate this, wheat (Triticum aestivum L. c.v. Gamtoos) was grown in controlled environment cabinets at 360 and 700 µmol mol -1 CO2. The full Long-Ashton nutrient solution comprising of three-nitrogen concentrations ([N]) viz. (4,6 and 12 mM) was used to water plants everyday. The measurement of net assimilation rate (NAR), stomatal conductance (gs), transpiration rate (E), water use efficiency (WUE), foliar [N], nitrogen use efficiency (NUE) and growth parameters (total plant biomass (TPB), total plant height (TPH), leaf area (LA), shoot and root dry weight) were made 7 days after germination (7 DAG) till the onset of flowering. The increase in nitrogen supply in the order of 4, 6 and 12mM resulted in an increase in NAR, g_s_ , WUE and a decline in E under elevated [CO2]. Under elevated [CO2] NAR was observed to increase during the first two weeks reaching its maximum at 14 DAG, thereafter followed by a decline reaching its maximum at 28 DAG. This was later followed by an increase at 35 DAG onwards. Under elevated [CO2], NAR was increased significantly between the nitrogen regimes during the first (7-14 DAG) and the last two (35-42 DAG) weeks. The response of assimilation as a function of internal [CO2] (Ci), showed a decrease with age at ages 14, 28 and 35 DAG. This negatively affected the initial slope and the CO2 saturated photosynthetic rates under all treatments. This suggest that acclimation may have been as a result of both stomatal and biochemical limitations. All the photosynthetic pigment levels (chl_a_, chl_b_, chl_(a+b)_, and C_(x+c)_ ) increased with an increase in nitrogen supply from 4 to 6mM [N]. A 12mM [N] resulted in a significant decline in the photosynthetic pigment levels compared to a 6mM [N]. Chla remained higher than chlb under all treatments. Also, NAR was seen to increase and decrease concomitantly with the photosynthetic pigment levels. Foliar [N] was seen to decrease with an increase in nitrogen supply from 4 to 6 mM [N] under elevated [CO2] and the effects were adverse under the 4mM [N]. Under the 6mM N regime foliar [N] was positively correlated to NAR for elevated [CO2] grown plants. Similarly, E was positively correlated to foliar [N] under the same conditions. Elevated CO2 and increase in nitrogen supply had a pronounced effect on total plant height (TPH), total plant biomass (TPB), leaf area (LA), shoot and root dry weight and nitrogen use efficiency (NUE). The effects were more pronounced under a 6mM [N] as a result of high NUE. However, under 12mM [N] growth was not as expected as a result of lower NUE. Under all treatments shoot dry weight (SDW) was positively correlated to NUE. Anatomical studies revealed that total leaf and midrib thickness was significantly increased with an increase in nitrogen supply under elevated CO2 to support the larger leaf areas. There were no significant changes in the chloroplast ultrastructure as a result of the increase in nitrogen supply and CO2 enrichment. Starch grain surface area was seen to decline with an increase in nitrogen under both ambient and elevated CO2. Elevated CO2 and increase in nitrogen supply significantly increased total grain dry weight per plant by 47 and 46% respectively under 6 and 12mM [N]. In contrast, the increase was by about 21, 61 and 67% respectively under 4, 6 and 12mM [N] between the CO2 regimes.

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Più fonti

Libri sul tema "Wheat fertilizers"

Stevens, Robert G. Winter wheat (soft white). Pullman: Cooperative Extension, College of Agriculture & Home Economics, Washington State University, 1988.

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Halvorson, A. R. Winter wheat: Eastern Washington, dryland area. Pullman, Wash: Cooperative Extension, College of Agriculture, Washington State University, 1986.

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Xiao mai biao zhun hua zai pei ji shu. Beijing Shi: Qi xiang chu ban she, 2001.

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Kätterer, Thomas. Wheat root dynamics, observed in minirhizotrons, in relation to soil water tension and fertilizer regime. Uppsala: Sveriges lantbruksuniversitet, Institutionen för ekologi och miljövård, 1991.

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Petersen, Volker. Entwicklung eines Entscheidungsmodells zur Optimierung der Stickstoffdüngung im Weizenbau. Kiel: Wissenschaftsverlag Vauk, 1986.

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Plunkett, Mark. An Evaluation of Nitrogen Status Tests for Yield and Quality Improvement in Winter Wheat Production. Dublin: University College Dublin, 1999.

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Mahajan, Anil. Integrated nutrient management (INM) in a sustainable rice-wheat cropping system. [New York]: Springer, 2009.

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Wash.) Roundtable on Preventing and Correcting Sulphur Deficiencies in Wheat (1994 Seattle. Proceedings: Roundtable on Preventing and Correcting Sulphur Deficiencies in Wheat. Washington, DC (1140 Connecticut Ave., N.W., Washington 20036): Sulphur Institute, 1998.

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Flink, Malin. Kol- och kvävedynamik i höstvete: Ovanjordisk primärproduktion, kväveupptag och beståndsutveckling. Uppsala: Sveriges lantbruksuniversitet, Institutionen för ekologi och miljövård, 1993.

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Byrne, Robert James. An evaluation of the effect of nitrogen management programmes on plant nitrogen concentration in milling wheat and subsequent yield and quality parameters. Dublin: University College Dublin, 1998.

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Capitoli di libri sul tema "Wheat fertilizers"

Walter, I., R. Miralies de Imperial e M. Bigeriego. "Long term effects of wheat straw incorporation compared with burning on wheat yield and soil properties". In Fertilizers and Environment, 463–65. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1586-2_79.

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Ragasits, I., J. Balázs e K. Berecz. "Effect of slow-release N-fertilizers on yield and baking quality of winter wheat". In Fertilizers and Environment, 237–40. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1586-2_39.

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Gyôri, Z., L. Ruzsányi, L. Jászberényi, I. Vágó e J. Loch. "The effect of N and P application on the Mn, Cu and Zn content of the winter wheat". In Fertilizers and Environment, 499–502. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1586-2_87.

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Ognjanovic, R., S. Lomovic, D. Djokic e M. Jelic. "The effect of calcium fertilization and liming on the soil improvement and grain yield of winter wheat, corn and soybean". In Fertilizers and Environment, 51–54. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1586-2_11.

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Hoffmann, S., e T. Kismányoky. "Effect of soil tillage and N-fertilization on the distribution of nitrate in the soil profile in a long-term wheat-maize biculture". In Fertilizers and Environment, 227–31. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1586-2_37.

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Pan, W. L., R. G. Stevens e K. A. Labno. "Cadmium Accumulation in Wheat and Potato from Phosphate and Waste-Derived Zinc Fertilizers". In ACS Symposium Series, 112–23. Washington, DC: American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2004-0872.ch009.

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Rosolem, Ciro A., Antonio P. Mallarino e Thiago A. R. Nogueira. "Considerations for Unharvested Plant Potassium". In Improving Potassium Recommendations for Agricultural Crops, 147–62. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_6.

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AbstractPotassium (K) is found in plants as a free ion or in weak complexes. It is easily released from living or decomposing tissues, and it should be considered in fertilization programs. Several factors affect K cycling in agroecosystems, including soil and fertilizer K contributions, plant K content and exports, mineralization rates from residues, soil chemical reactions, rainfall, and time. Soil K+ ions can be leached, remain as exchangeable K, or migrate to non-exchangeable forms. Crop rotations that include vigorous, deep-rooted cover crops capable of exploring non-exchangeable K in soil are an effective strategy for recycling K and can prevent leaching below the rooting zone in light-textured soils. The amount of K released by cover crops depends on biomass production. Potassium recycled with non-harvested components of crops also varies greatly. Research with maize, soybean, and wheat has shown that 50–60% of K accumulated in vegetative tissues is released within 40–45 days. A better understanding of K cycling would greatly improve the efficacy of K management for crop production. When studying K cycling in agricultural systems, it is important to consider: (1) K addition from fertilizers and organic amendments; (2) K left in residues; (3) K partitioning differences among species; (4) soil texture; (5) soil pools that act as temporary sources or sinks for K. In this chapter, the role of cash and cover crops and organic residues on K cycling are explored to better understand how these factors could be integrated into making K fertilizer recommendations.

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Szirtes, Viktoria, János Szirtes, Sándor Varga, Jeno Balassa, István Mate e József Ba’nfai. "Hormone Centered Theory and Practice of the Application of Foliar Fertilizers in Winter Wheat and Other Cereals". In Foliar Fertilization, 346–77. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4386-5_27.

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Nuthall, Peter L. "Wrong again." In Farm business management: the decisive farmer, 49–61. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781800620124.0005.

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Abstract This chapter narrates the details of a farmer meeting. Prior to the first meeting of the farmers in one of the discussion/improvement groups, Ben, who had offered to be the farmer host for this first meeting, took time to update all the information on his farm providing the full background for the farmers so they would better understand any problems Ben might have, or could experience in the future. The report included a full budget which listed both the physical plans and their financial consequences, and also what is often referred to as a 'property report' describing the physical details of the farm. Ben also prepared a 'management report' listing how all the resources, including the stock, were managed. A management report is a description of all the management systems a farmer uses and follows. For example, what system does the farmer follow for, say, growing a crop of wheat? What cultivation? What seeding rate (and cultivar)? What fertilizers and rates? What disease prevention? What irrigation rates and systems? What harvesting and marketing systems? And for, say, a ewe flock, what breed? What replacement system? What disease control? What feeding system and quantities? What lambing system? What lamb and wool marketing, what drenching systems? What weaning system and age? And so on for all parts of the farm.

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Németh, T., P. Csathó e T. Árendás. "New, Environmentally Friendly Wheat Fertilizer Advisory System for Hungary". In Wheat in a Global Environment, 625–31. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-017-3674-9_84.

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Atti di convegni sul tema "Wheat fertilizers"

Hospodarenko, Hryhorii, e Vitalii Liubych. "Formation of yield and quality of winter durum wheat grain depending on long-term fertilization". In Research for Rural Development 2022 : annual 28th international scientific conference proceedings. Latvia University of Life Sciences and Technologies, 2022. http://dx.doi.org/10.22616/rrd.28.2022.002.

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Durum wheat (Triticum durum Desf.) grain is the main raw material for the production of high-quality pasta and cereal products. The research was conducted at Uman National University of Horticulture (Ukraine) in a long-term stationary experiment, founded in 2011. The aim of the work was to study the impact of long-term use of various fertilization systems (with incomplete return of nitrogen, phosphorus and potash fertilizers) on the yield and quality of durum winter wheat grain. The long-term application of nitrogen, nitrogen-potassium, nitrogen-phosphorus and nitrogen-phosphorus-potassium systems in the field crop rotation has a strong impact on the formation of durum winter wheat yield. Long-term use of N150P60K80 increases it from 3.6 t ha-1 up to 4.9 t ha-1 (p≤0.05). The use of half a dose of complete mineral fertilizer provides 4.5 t ha-1 (p≤0.05). Variants with incomplete return of phosphoruspotassium fertilizers, as well as paired combinations with a nitrogen component, provide the formation of 4.6–4.8 t ha-1 grains. Nitrogen fertilization systems increase grain yield to 4.2–4.5 t ha-1 depending on the fertilizer dose. It should be noted that durum winter wheat responds well to the use of nitrogen fertilizers, as the protein content increases from 13.3 to 14.8–15.9 % (p≤0.05), and the gluten content from 28.0 to 31.1–33.4% (p≤0.05) depending on the fertilization system. The protein content was most affected by the application of nitrogen component from complete mineral fertilizer.

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DROMANTIENĖ, Rūta, Irena PRANCKIETIENĖ e Gvidas ŠIDLAUSKAS. "EFFECT OF FOLIAR APPLICATION OF AMINO ACIDS ON THE PHOTOSYNTHETIC INDICATORS AND YIELD OF WINTER WHEAT". In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.028.

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Experiments involving a winter wheat (Triticum aestivum L.) variety ‘Širvinta 1’ were conducted at the Experimental Station of the Aleksandras Stulginskis University during the period 2006–2009 in limnoglacional silty loam on morainne clay loam Cal(ca)ri-Endohypogleyic Luvisol. Winter crops were grown on the background of N150P90K90 mineral fertilization and were additionally foliar-fertilized with amide nitrogen fertilizer, containing different concentrations of amino acids (0.5 %–3.0 %), at a winter wheat booting, heading and milk maturity stages. Experimental evidence showed that solutions with different amino acids concentrations applied for winter wheat fertilization at booting, heading and milk maturity stages increased plant photosynthetic indicators. Chlorophyll a to b ratio in winter wheat leaves significantly increased having applied 0.5–2.5 % amino acids solutions at booting and at milk maturity stages. Plants fertilized with amino acids solutions at booting stage had a possibility to form larger assimilating leaf area. Winter wheat grain yield significantly increased (0.27–0.4 t ha-1) under the effect of amino acids. The highest yield increases were obtained having applied amino acids at booting and heading growth stages. The statistical data analysis (xextr.) evidenced that the highest yield and its quality would be attained with foliar feeding of winter wheat with amino acids fertilizers: at booting stage with 2.4 %, at heading stage with 1.47 %, and milk maturity stage with 1.39 % amino acids solution.

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Moiseeva, Ksenia, Alexander Karmatskiy e Anastasia Moiseeva. "Influence of Mineral Fertilizers on Winter Wheat Yield". In International scientific and practical conference "AgroSMART - Smart solutions for agriculture" (AgroSMART 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/agrosmart-18.2018.94.

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Semenyuk, O. V. "Yield of winter wheat using complex fertilizers based on amino acids". In CURRENT STATE, PROBLEMS AND PROSPECTS OF THE DEVELOPMENT OF AGRARIAN SCIENCE. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-2020-5-9-10-46.

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In a three-year field study, the effect of liquid complex organomineral fertilizers based on amino acids on the yield of soft winter wheat was studied. The early leaf treatment of crops with “Polydon Amino Plus” and “Polydon Amino Mix” fertilizers increased the crop yield by 9.3 % and 11.9 %, respectively.

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Ozheredova, Alena. "Mineral Fertilizers Influence On Some Characteristics Of Winter Wheat". In International Scientific Congress «KNOWLEDGE, MAN AND CIVILIZATION». European Publisher, 2021. http://dx.doi.org/10.15405/epsbs.2021.05.164.

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Polunina, T. S., V. A. Lavrinova e M. P. Leontyeva. "INFLUENCE OF DUMPING TREATMENT AND CHEMISTRY MEANS ON SOIL MYCOBIOTA IN CROPS OF WINTER WHEAT OF THE NORTH-EAST PART OF THE CEC". In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS Volume 2. DSTU-Print, 2020. http://dx.doi.org/10.23947/interagro.2020.2.86-89.

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The article presents the results of studies of the influence of dump tillage, fertilizers, on the development of soil pathogens that cause root rot of winter wheat, their parasitic activity is shown harmful mycobiota. The optimal dose of mineral fertilizer was revealed against the background of dump soil cultivation, which made it possible to successfully restrain and increase the number of micromycetes causing root rot

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Tukmacheva, E. V., e O. F. Khamova. "THE DEPENDENCE OF GRAIN YIELD OF WINTER WHEAT ON THE INTENSITY OF CELLULOSE DECOMPOSITION IN MEADOW-CHERNOZEM SOIL". In 11-я Всероссийская конференция молодых учёных и специалистов «Актуальные вопросы биологии, селекции, технологии возделывания и переработки сельскохозяйственных культур». V.S. Pustovoit All-Russian Research Institute of Oil Crops, 2021. http://dx.doi.org/10.25230/conf11-2021-246-249.

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We studied the cellulolytic activity of the winter wheat rhizosphere soil in a stationary field experiment with the application of mineral nitrogen-phosphorus fertilizers (N15P23 per hectare of crop rotation area), straw, and seed inoculation. We estimated the crop yield depending on the intensity of cellulose decomposition in the soil. We established that the intensity of cellulose decomposition in the rhizosphere of winter wheat was most affected by the application of mineral fertilizers, as well as the combination of the application of mineral fertilizers, straw, and seed inoculation with the biopreparation rhizoagrin before sowing.

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Galkina, O. V., e A. L. Tarasov. "THE INFLUENCE OF MINERAL FERTILIZERS AND BIOLOGICAL PRODUCTS IN THE CULTIVATION OF WINTER WHEAT IN THE CONDITIONS OF THE UPPER VOLGA REGION". In Agrobiotechnology-2021. Publishing house of RGAU - MSHA, 2021. http://dx.doi.org/10.26897/978-5-9675-1855-3-2021-177.

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Research work on the study of biological products and mineral fertilizers on winter wheat crops on sod - podzolic medium loamy soil of the experimental field of the Ivanovo Agricultural Academy. When processing winter wheat seeds with biological preparations, mineral fertilizers were applied before sowing. According to the research results, there was a positive effect on the phases of crop development, as well as yield.

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DROMANTIENĖ, Rūta, Irena PRANCKIETIENĖ, Gvidas ŠIDLAUSKAS e Vita SMALSTIENĖ. "THE EFFECT OF MG AND S ON PHOTOSYNTHESIS PRODUCTS AND NITROGEN CONTENT IN WINTER WHEAT". In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.005.

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In 2013 and 2014, field experiments involving winter wheat were conducted at Aleksandras Stulginskis University’s Experimental Station on a medium-textured Cal(ca)ri-Epihypogleyic Luvisol. N150P90K120 were applied as the main fertilizers. Additionally, a foliar fertilizer including amide nitrogen, sulphur and magnesium (MgO concentrations ranging from 0.25 % to 2.5 %), (further referred to as magnesium fertilizer), was sprayed at the tillering and booting stages of winter wheat. It was found that magnesium fertilizer foliar-applied at the end of tillering and booting stages tended to increase chlorophyll a and b contents in winter wheat leaves. Chlorophyll a content in leaves significantly increased when the solution with 2.5 % concentration of magnesium had been applied at tillering and when 0.5, 1.0 and 2.5 % concentrations of the solution had been applied at booting stages. Chlorophyll b content in winter wheat leaves was significantly affected by the solutions with 0.5, 1.0 and 2.5 % magnesium concentrations at tillering and by the solutions with 0.5, 1.0, 1.5, 2.0 and 2.5 % magnesium concentrations at booting stages. The highest increase in dry matter content was recorded when 2.5 % MgO solution had been applied at booting stage. A statistically significant correlation was established between the MgO concentrations applied at tillering (r = 0.905*) and booting (r = 0.863*) stages and nitrogen content in winter wheat dry matter.

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Akhmetzhanov, D. M., e I. I. Seregina. "New approaches in the regulation of the spring wheat production process when growing in the conditions of environmental factors". In III All-Russian Scientific Conference with International Participation "Science, technology, society: Environmental engineering for sustainable development of territories". Krasnoyarsk Science and Technology City Hall, 2022. http://dx.doi.org/10.47813/nto.3.2022.6.217-223.

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In vegetation experiment investigated influence of the combination of nitrogen and zinc fertilizers on yield and productivity elements of spring wheat under drought conditions. There are presented results of analysis of acquired data. It was revealed that the highest efficiency of nitrogen-zinc fertilizers under drought conditions achieving in application of variant with ammonium sulfate. It was shown that in the highest influence of zincammonium in the conditions of water stress that increased adaptive potential of spring wheat and reduced depression of plant production process.

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Rapporti di organizzazioni sul tema "Wheat fertilizers"

Dolgopolova, N. V. INFLUENCE OF MINERAL FERTILIZERS ON WINTER WHEAT WILD RESISTANCE DEPENDING ON METHODS OF CONNECTION AND TERMS OF APPLICATION. ФГБОУ ВО Курская ГСХА, 2018. http://dx.doi.org/10.18411/issn1997-0749.2018-01-05.

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Litaor, Iggy, James Ippolito, Iris Zohar e Michael Massey. Phosphorus capture recycling and utilization for sustainable agriculture using Al/organic composite water treatment residuals. United States Department of Agriculture, gennaio 2015. http://dx.doi.org/10.32747/2015.7600037.bard.

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Objectives: 1) develop a thorough understanding of the sorption mechanisms of Pi and Po onto the Al/O- WTR; 2) determine the breakthrough range of the composite Al/O-WTR during P capturing from agro- wastewaters; and 3) critically evaluate the performance of the composite Al/O-WTR as a fertilizer using selected plants grown in lysimeters and test-field studies. Instead of lysimeters we used pots (Israel) and one- liter cone-tainers (USA). We conducted one field study but in spite of major pretreatments the soils still exhibited high enough P from previous experiments so no differences between control and P additions were noticeable. Due to time constrains the field study was discontinued. Background: Phosphorous, a non-renewable resource, has been applied extensively in fields to increase crop yield, yet consequently has increased the potential of waterway eutrophication. Our proposal impetus is the need to develop an innovative method of P capturing, recycling and reuse that will sustain agricultural productivity while concurrently reducing the level of P discharge from and to agricultural settings. Major Conclusions & Achievements: An innovative approach was developed for P removal from soil leachate, dairy wastewater (Israel), and swine effluents (USA) using Al-based water treatment residuals (Al- WTR) to create an organic-Al-WTR composite (Al/O-WTR), potentially capable of serving as a P fertilizer source. The Al-WTR removed 95% inorganic-P, 80% to 99.9% organic P, and over 60% dissolved organic carbon from the agro-industrial waste streams. Organic C accumulation on particles surfaces possibly enhanced weak P bonding and facilitated P desorption. Analysis by scanning electron microscope (SEM- EDS), indicated that P was sparsely sorbed on both calcic and Al (hydr)oxide surfaces. Sorption of P onto WW-Al/O-WTR was reversible due to weak Ca-P and Al-P bonds induced by the slight alkaline nature and in the presence of organic moieties. Synchrotron-based microfocused X-ray fluorescence (micro-XRF) spectrometry, bulk P K-edge X-ray absorption near edge structure spectroscopy (XANES), and P K-edge micro-XANES spectroscopy indicated that adsorption was the primary P retention mechanism in the Al- WTR materials. However, distinct apatite- or octocalciumphosphatelike P grains were also observed. Synchrotron micro-XRF mapping further suggested that exposure of the aggregate exteriors to wastewater caused P to diffuse into the porous Al-WTR aggregates. Organic P species were not explicitly identified via P K-edge XANES despite high organic matter content, suggesting that organic P may have been predominantly associated with mineral surfaces. In screen houses experiments (Israel) we showed that the highest additions of Al/O-WTR (5 and 7 g kg⁻¹) produced the highest lettuce (Lactuca sativa L. var. longifolial) yield. Lettuce yield and P concentration were similar across treatments, indicating that Al/O- WTR can provide sufficient P to perform similarly to common fertilizers. A greenhouse study (USA) was utilized to compare increasing rates of swine wastewater derived Al/O-WTR and inorganic P fertilizer (both applied at 33.6, 67.3, and 134.5 kg P₂O₅ ha⁻¹) to supply plant-available P to spring wheat (TriticumaestivumL.) in either sandy loam or sandy clay loam soil. Spring wheat straw and grain P uptake were comparable across all treatments in the sandy loam, while Al/O-WTR application to the sandy clay loam reduced straw and grain P uptake. The Al/O-WTR did not affect soil organic P concentrations, but did increase phosphatase activity in both soils; this suggests that Al/O-WTR application stimulated microorganisms and enhance the extent to which microbial communities can mineralize Al/O-WTR-bound organic P. Implications: Overall, results suggest that creating a new P fertilizer from Al-WTR and agro-industrial waste sources may be a feasible alternative to mining inorganic P fertilizer sources, while protecting the environment from unnecessary waste disposal.

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Research Institute (IFPRI), International Food Policy. What is the true value of fertilizer? An assessment of farmers willingness-to-pay for fertilizers across the hill and Terai regions of Nepal. Washington, DC: International Food Policy Research Institute, 2019. http://dx.doi.org/10.2499/p15738coll2.133196.

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Duchoslav, Jan, e Joseph Rusike. Why are fertilizer prices in Malawi high? And what can be done? Washington, DC: International Food Policy Research Institute, 2021. http://dx.doi.org/10.2499/p15738coll2.134546.

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Lapidus, Daniel, Annah Latané, Ivan Ortiz-Monasterio, Robert Beach e María Elena Cárdenas Castañeda. The GreenSeeker Handheld: A Research Brief on Farmer Technology Adoption and Disadoption. RTI Press, maggio 2017. http://dx.doi.org/10.3768/rtipress.2017.rb.0014.1705.

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The GreenSeeker Handheld crop sensor is an innovative diagnostic tool that farmers can use to improve their fertilizer use efficiency. Over the last decade, farmers in the Yaqui Valley, Sonora, Mexico, widely adopted the technology. Adoption led to significant increases in profits for farmers as well as avoided greenhouse gas emissions. Despite this success, adoption declined sharply in the 2015–2016 growing season. RTI researchers collaborated with the International Wheat and Maize Improvement Center (CIMMYT) to analyze the average costs and benefits of use of the GreenSeeker in addition to the amount of reductions in greenhouse gas emissions. We provide the initial results of these analyses and lessons learned that can help inform dissemination of sustainable agricultural technology transfer.

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Research Institute (IFPRI), International Food Policy. What is the intrinsic value of fertilizer? Experimental value elicitation and decomposition in the hill and terai regions of Nepal. Washington, DC: International Food Policy Research Institute, 2019. http://dx.doi.org/10.2499/p15738coll2.133150.

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