Plant populations continue to increase and, unfortunately, so do seed costs. Certainly hybrids today withstand the stress of higher seeding rates better than ever before. In fact, higher seeding rates are one component that drove annual yield increases the last several decades.
Iowa State University
Elmore, Roger W. and Abendroth, Lori, "Update on Corn Plant Populations and Seed Costs" (2009). Integrated Crop Management News. 681.
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