TITLE:
Soybean Seed Nutrition as Affected by Cotton, Wheat, and Fallow Rotation
AUTHORS:
Nacer Bellaloui, Salliana R. Stetina, William T. Molin
KEYWORDS:
Fatty Acids, Nutrients, Oil, Protein, Sugars
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.5 No.16,
August
27,
2014
ABSTRACT: Limited information
is available on the effects of crop rotation on seed nutrition. Therefore, the
objective of the current research was to determine whether crop rotations are
beneficial to soybean seed nutrition for the first two complete rotation cycles
in an experiment conducted from 2007 through 2012. The first complete rotation
cycle (experiment one) was conducted in 2009, then repeated in 2010, and the
second complete rotation cycle (experiment two) was conducted in 2011, and then
repeated in 2012. The rotation sequences were: wheat-late cotton-fallow-soybean
(WCFS), fallow-cotton-wheat-soybean (FCWS), and fallow-cotton-fallow-soybean
(FCFS). The results showed that WCFS and FCFS resulted in higher seed oil,
palmitic and stearic acids, glucose, sucrose, fructose, Fe, P, and B. No
consistent effects on seed protein, oleic acid, linoleic acid, linolenic acid,
raffinose, stachyose, and Mn contents were observed. These changes were
accompanied by higher P, K, B, Fe in soil and N, K, and B in leaves, indicating
that soil and leaf nutrients may result in continuous supply and mobility of
nutrients from leaves to seed during seed fill. Our research demonstrated that
crop rotation management can result in seed nutrient changes, affecting seed
quality.