tillage, nitrogen placement, short-season rotation, corn yield, wheat yield, soybean yield
In 2013, late planting resulted in corn yields that were less than 100 bu/a. Nitrogen (N) placement did not affect yields in the higher-yielding conventional tillage system, but knifing tended to result in greater yield in reduced and no-till systems.
Sweeney, D. W.
"Tillage and Nitrogen Placement Effects on Yields in a Short-Season Corn/Wheat/Double-Crop Soybean Rotation,"
Kansas Agricultural Experiment Station Research Reports: