Northern grown soybeans tend to be challenged in both yield and seed protein concentration. It is our contention that nitrogen uptake (from both soil N and fixed N), storage, and mobilization to seed during seed filling is a primary limiting factor of both yield and protein content. In addition, seed protein is inversely related with oil concentration but at a 2:1 ratio (protein: oil). Therefore, lower protein seed tends to be low in the sum of protein and oil. This, in turn, is the primary handicap of lower protein seed.
Based on examination of eight years of USSEC soybean quality sampling across the US; it appears that of the environmental factors that affect seed protein deposition,...
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#environmental stress