Row Spacing and Population Effects on Corn Yields¹

Abstract

Abstract During a 3‐year period at three locations, the effects of populations and row spacings on 10 corn ( Zea mays L.) hybrids (early, medium, and late maturing) were evaluated. Grain yields were increased as the width between rows decreased. Yields were usually higher with the late maturing variety planted at a medium or high population. Some exceptions to this generalization were observed. Percentage moisture in the grain at harvest was not affected by row spacings or plant populations but was affected by the hybrid used. Ear weight ‐increased with a decrease in row spacing and plant population and with increased time required for maturity. The ear‐to‐stover ratio was greatly affected by hybrids but was little influenced by row spacings and plant populations.