1. The Effects of Rate and Timing of Nitrogen Applications on the Yield and Nitrogen Recovery of Irrigated Corn

High crop yields require that adequate amounts o f N be present and available to the root at the times it i s needed to support growth. However, for a production system to be efficient in the use of the nitrogen and to minimize any potential adverse environmental effects, care must be used to minimize loss during the growing season and minimize amounts of residual N remaining in the soil at the end of the cropping season. This requires that proper N rates be applied and that the N be applied in such...