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Analysis of the Carbon and Nitrogen Limitations to Soybean Yield 1
Author(s) -
Sinclair T. R.,
Wit C. T.
Publication year - 1976
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1976.00021962006800020021x
Subject(s) - nitrogen , yield (engineering) , agronomy , carbon fibers , biology , chemistry , mathematics , materials science , organic chemistry , algorithm , composite number , metallurgy
Soybeans are hypothesized to be “self‐destructive” since they apparently need to translocate large amounts of nitrogen from vegetative tissues during seed‐fill to sustain seed growth. To assess the possible limitations of this characteristic on soybean seed yield, a simple, dynamic simulation model is developed which accounts for the availability of nitrogen and photosynthate within the plant. The simulations show that the duration of seedfill and seed yield is clearly limited by the self‐destructive characteristic. Increased availability of nitrogen within the plant is required for significant increases in soybean yields. Possible alterations of the model required to mimic actual soybean seed growth are presented.