Virginia Soybean Association

Soybean N demand can exceed 5 lb per bushel of seed for optimum yield (Flannery, 1986). Salvagiotti et al. (2008) determined that approximately 71 lb N ha-1 are required to produce biomass that contains 15 bushels of soybean seed and that 50 to 80% of this N requirement was met by N. 2 fixation. Lindemann and Glover (2003). ................
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