Download or read book The Effect of Fertilizer Nitrogen on Yield Protein Content and Symbiotic Nitrogen Fixation in Soybeans Glycine Max L Var Maple Presto written by Peter Jonathan Regitnig and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Fertilizer Nitrogen on Yield Protein Content and Symbiotic Nitrogen Fixation in Soybeans Glycine Max L Var Maple Presto written by Peter Jonathan Regitnig and published by . This book was released on 1983 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Nitrogen Addition on Yield and Symbiotic Dinitrogen Fixation of Soybeans Glycine Max L Merr C v Maple Amber Fababeans Vicia Faba L Minor C v Aladin and Lentils Lens Esculenta written by Vernon Rodd and published by . This book was released on 1987 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Nitrogen Forms and Methods of Application Upon Yield and Several Yield Components of Soybeans Glycine Max L written by Mansoor Tasdighi and published by . This book was released on 1977 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Nitrogen Fixation Plant Nitrogen Demand and Physiological Processes Involved in Seed Yield and Seed Composition in Soybeans written by Santiago Tamagno and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Soybean [Glycine max (L.) Merr.] plants can capture atmospheric nitrogen (N) through symbiotic relationships with soil bacteria in a process called "biological N fixation" (BNF), reducing the reliance on synthetic fertilizers. To meet growth of the global population and increasing demand for quality protein and oil, the need for soybean will inexorably grow. One of the challenges to further improve soybean seed yield is the high demand of N in comparison to cereals and other oilseed crops. Further characterization of the environmental and management effects on BNF process is needed to enhance its capacity for supplying N to the crop. This dissertation is organized in four chapters outlining these topics through a series of experiments describing the association between plant nutrition, BNF, and seed composition with seed yield generation. Chapter 1 presents a synthesis analysis on a nutrient-based physiological framework on four key variables determining N efficiency in soybean (i.e., seed yield, N seed concentration, total N uptake, and nitrogen harvest index). Results showed that N partitioning to the seeds is the main parameter responsible in seed yield variation instead of N seed concentration. An experiment in Chapter 2 explored the hypothesis of the carbon (C) cost of BNF on biomass production, yield formation, and seed composition. Chapters 3 and 4 explored the historical component behind seed yield generation and seed composition. Results from Chapter 3 describe the shift in allocation of reproductive biomass using the allometric approach, whereas Chapter 4 provides a detailed description of the dynamics of oil and fatty acid accumulation under two N regimes.
Download or read book Study of Plant and Soil Factors Affecting Seasonal Nitrogen Fixation Yield Formation and Seed Composition in Soybeans written by Luiz Moro Rosso and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soybean [Glycine max (L.) Merr.] production currently faces several challenges linked to global food security (both quantity and quality) raised by an overgrowing human population, limited cropland, and diversified dietary in developed regions. To sustain seed yield and high protein levels, soybeans depend on large nitrogen (N) uptake, which is mostly attained by the symbiotic N fixation (SNF) process. Although SNF has been extensively investigated with single assessments during the season, just a few recent reports looked at the temporality of N sources (soil and SNF) while taking into consideration seasonal dry matter accumulation and soil nitrate (NO3) and ammonium (NH4) availability. Furthermore, it is still unclear how the overall changes in N uptake dynamics supports yield formation and seed components among canopy portions, especially considering the branches as potential contributors for high yield in modern genotypes. Following this rationale, this project presents two overall objectives: 1) to identify the impact of soil NO3 and NH4 temporal availability on seasonal SNF [N derived from the atmosphere (Ndfa)], N uptake, and dry matter accumulation (herein called study 1); and 2) to characterize seed yield, protein, oil, amino acids (AA), and fatty acids (FA) from the main stem and branches (herein called study 2) for different commercial soybean varieties. To address the first objective, four genotypes were field grown at Manhattan (Kansas, US) during 2019 and 2020 growing seasons. Dry matter, N concentration, N uptake, Ndfa, fixed N, soil NO3, and NH4 (60-cm depth) were measured at six phenological stages, along with seed yield, protein, and oil concentration at harvest time. Seasonal exposure to NH4 (area under the curve) showed a stronger suppression of Ndfa at the end of the season than NO3. However, a mid-season NO3 peak delayed uptake from soil and SNF, but only decreased maximum uptake rates from SNF. Additionally, dry matter was used as a seasonal linear predictor of fixed N to simplify the process model. However, this relationship was deeply affected by soil N availability across environments (boundary functions) and also by a potential dry matter threshold around 5 Mg ha−1 across genotypes and site-years. For the second objective, another four genotypes were field-grown during the 2018 and 2019 growing seasons at Ashland Bottoms and Rossville (Kansas, US), respectively. At harvest time, seeds from the upper, middle, lower main stem, and branch nodes were manually separated and assessed for yield, seed size, protein, and oil (seed content and concentration), abundance of limiting AA within protein, and FA ratio (oleic / linoleic + linolenic). The accumulation of protein was more responsive to node position than oil, determining high protein concentration in the upper main stem and high oil concentration in the lower main stem nodes. However, the protein quality (limiting AA) was higher in the lower main stem, while the FA ratio (oil quality) was greater in the upper section of the plant. Branches presented the less-rich seed composition relative to the main stem, but their contribution to yield was positively associated with oil and limiting AA abundance across genotypes. In summary, the main outcomes of the present thesis are related to 1) the importance of soil NO3 and NH4 to regulate Ndfa during the season, 2) the timing of Ndfa assessment or prediction for an accurate fixed N calculation throughout the season, and 3) the underlaying effect of branch yield allocation on the seed composition of the whole soybean plant, plausibly moderating changes across genotypes, environments, and management practices. A better understanding of soybean N acquisition and allocation for yield and quality formation within the plant is important to sustain the yield increase, offset protein decay, and assure cropping systems sustainability and food security in a long-term standpoint.
Download or read book Effect of Nitrogen Addition on Yield and Symbiotic Dinitrogen Fixation of Soybeans Glycine Max L Merr C v Maple Amber Fababeans Vicia Faba L Minor C v Aladin and Lentils Lens Esculenta written by Vernon Rodd and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Fixation in Soybeans revision 1979 1983 written by Jayne T. MacLean and published by . This book was released on 1983 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of the Rotational Influence and Nitrogen Contribution of Soybean Glycine Max L Merr to Subsequent Crops written by Timothy S. Maloney and published by . This book was released on 1995 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen Fixation in High Yielding Soybean Glycine Max L Merr written by Fernando Salvagiotti and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Nitrogen Additions to Field Soils on Growth Nodulation Yield and Nitrogen Content of the Soybean Plant written by Jerome Clement Lyons and published by . This book was released on 1948 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Affecting Symbiotic Nitrogen Fixation in Soybeans Glycine Max L Merr written by R. J. Lawn and published by . This book was released on 1973 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Influencing the Protein Content of Soy Beans written by and published by . This book was released on 1914 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symbiotic Nitrogen Fixation in the Soybean Glycine Max L Merr Indeterminate Growth Habit written by Lisbet Ann Phillips and published by . This book was released on 1979 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Nitrogen and Row Spacing on Soybean Glycine Max L Merrill Yield Nitrogen Carbohydrate Protein Content and Water Use written by Wan Mohomad Kadir and published by . This book was released on 1987 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Role of Nitrogen on Growth and Seed Yield of Soybean and a New Fertilization Technique to Promote Nitrogen Fixation and Seed Yield written by Takuji Ohyama and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Soybean is an important crop for human food and feed for livestock. World soybean production is increasing especially in North and South America. Soybean seeds contain a high percentage of protein about 35-40%, and they require a large amount of nitrogen compared with other crops. Soybean plants make root nodules with rhizobia, and rhizobia can fix atmospheric N2 and give the fixed N to the host soybean plants. Also, soybean can absorb nitrogen usually nitrate from soil or fertilizers. The amount of total assimilated nitrogen in shoot is proportional to the soybean seed yield either from nitrogen fixation or from nitrogen absorption, and the nitrogen availability is very important for soybean cultivation. Maintenance of a high and long-term nitrogen fixation activity is very important for a high production of soybean. However, application of chemical nitrogen fertilizers usually depresses nodule formation and nitrogen fixation. Nitrate in direct contact with a nodulated part of roots causes severe inhibition of nodule growth and nitrogen fixation, although a distant part of nodules from nitrate application gives no or little effect. Deep placement of slow-release nitrogen fertilizers, coated urea, or lime nitrogen promoted the growth and seed yield and quality of soybean without depressing nitrogen fixation.
