Soybean seed protein, oil, and fatty acids are altered by S and S N fertilizers under irrigated or non-irrigated environmentsReport as inadecuate




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Information on the effect of sulfur S or sulfur+nitrogen S + N on soybean seed composition is scarce. Thus, the objective of this study was to investigate the effects of S, and S + N fertilizers on soybean Glycine max L. Merr. seed composition in the Early Soybean Production System ESPS under irrigated I and nonirrigated NI environments. Two separate field experiments were conducted from 2005 to 2007. One experiment was irrigated, and the second experiment was nonirrigated. Under I condition, S at a rate of 44.8 kg-ha alone or with N at 112 kg-ha resulted in a consistent increase in seed protein and oleic acid concentrations, and a decrease in oil and linolenic acid concentrations compared with the control C. For example, in 2006 and compared with the C, application of S + N increased the percentage up to 11.4% and 48.5% for protein and oleic acid, respectively. However, oil concentration decreased by 3%. Protein and oleic acid increase were accompanied by a higher percentage of leaf and seed N and S. Under NI conditions, seed protein and oleic acid concentrations were significantly higher in C than in any S or S + N treatments, but the oil and linolenic acid concentrations were significantly lower. The results indicate that specific rate of S alone or S + N combined can alter seed composition under irrigated or nonirrigated conditions. This knowledge may help plant breeders to develop and release cultivars to suit specific target locations to grow new value-added soybeans or select for specific seed composition traits under specific environmental stress factors such as drought.

KEYWORDS

Fatty Acids; Nutrition; Oil; Protein; Seed Composition; Soybean

Cite this paper

Bellaloui, N. , Ebelhar, M. , Gillen, A. , Fisher, D. , Abbas, H. , Mengistu, A. , Reddy, K. and Paris, R. 2011 Soybean seed protein, oil, and fatty acids are altered by S and S + N fertilizers under irrigated or non-irrigated environments. Agricultural Sciences, 2, 465-476. doi: 10.4236-as.2011.24060.





Author: Nacer Bellaloui, M. Wayne Ebelhar, Anne M. Gillen, Daniel K. Fisher, Hamed K. Abbas, Alemu Mengistu, Krishna N. Reddy, Robert L.

Source: http://www.scirp.org/



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