Response of Corn to Varying Nitrogen Rates in Clayey Soils.

The corn acreage in Arkansas has increased significantly, in part due to attractive crop prices. Nitrogen-rate response data for corn grown in clayey soils is limited and was generated for corn hybrids no longer available, and under contrasting weather conditions. A series of experiments were established, during 2006-2012, to evaluate the yield response of corn to varying nitrogen rates. Treatments consisted of nitrogen rates equivalent to 0, 45, 90, 135, 180, 225, 270, and 315 kg nitrogen per hectare. The objective of this poster is to present the resulting data from these experiments.