University of Nebraska-Lincoln Extension, Institute of Agriculture and Natural Resources

June 8, 2007

Estimating Post-Rainfall Available Nitrogen

Over the last couple of weeks areas of the state have received higher than normal rainfall. Producers might be concerned about nitrogen leaching below the rootzone. This is more likely to be a problem in areas where soils are coarse textured and were already saturated before the rains.

Producers should evaluate their situation if they have had at least four inches of rain infiltrate into the ground since nitrogen was applied.

Check the May 25, 2007 Crop Watch article, Nitrogen Fertilizer — How Much is Left?, for information on using the PSNT soil test to determine how much nitrogen is available at this time.

Charles Shapiro
Extension Soil Scientist
Haskell Ag Lab, Concord

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© 2007 by the University of Nebraska Board of Regents. All rights reserved.
Published by University of Nebraska-Lincoln Extension in the Institute of Agriculture and Natural Resources Cooperating with the counties and the U.S. Department of Agriculture.
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