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Interpretive Summaries:
Late Season N for Corn, 1999
The primary objective of these studies is to improve corn grain yield and profit by improving the utilization of soil moisture by fertilizing with N and K just prior to tassel. A second objective is to develop a soil-specific method to predict the need for late season N and K fertilization.
Corn grain yields of 180 and 209 bu/A were obtained at the two locations. Nearly 30 bu/A of the 180 bu/A yield was due to N applied prior to the silking stage of growth. No response to applied K was measured during the first year of the study. Soil moisture measurements were made throughout the growing season. Data analysis reveals that the potential exists for profitable yield increases to late season N fertilizer application to corn when adequate moisture is available. VA-19F
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