Project ID

1989-28

Abstract

The late-spring soil test for nitrate has been identified as a promising tool for improving nitrogen (N) management in Iowa. The test works by measuring the amount of nitrate iiv the top one-foot layer of soil when corn plants are 6 to 12 inches tall. Sampling is done as late as possible in the spring, but still early enough to allow sidedress applications of more fertilizer N if needed.

Principal Investigator(s)

Alfred M. Blackmer

Year of Grant Completion

1993

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