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Showing posts from June, 2007

Higher population or row spacing?

D. R. Hicks, T.S. Hoverstad, and S.R. Quiring, University of Minnesota
As corn yields continue to increase, there's interest in whether row spacing can be reduced to push yields to the next level. We reported 8% higher yields for 20 inch spaced rows compared with 30 inch rows from a three year, three location study conducted in the early '90's. And plant population studied during that same time showed optimum populations to be 30000 plants per acre. Current row spacing and population studies include 20 and 30 inch spaced rows with populations ranging from 16000 to 36000 plants per acre.