The soybean aphid has become the most important insect pest of soybeans in the North- east and Midwest regions of North America. It often damages soybean plants that are K-deficient more than those that are not. Recent research in Wisconsin and Michigan has found that K-deficient soybeans can in some, but not all, instances suffer more from aphids than soybeans without K limitation, and that the causes may be related to amino acid composition of the phloem sap.
Need more information about growing soybeans? You can always return to the soybean fertilizer & soybean crop guide table of contents
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