Use of the End-of-Season Corn Stalk Nitrate Test in Iowa Corn Production

Title

Use of the End-of-Season Corn Stalk Nitrate Test in Iowa Corn Production

Number

CROP 3154

Files

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Publication Date:

7-2018

Status

Current

Description

Nitrogen (N) application is typically required for optimal corn yield and profitability. Rate selection is important, and can affect achieving both of those goals. There are in-season tests that can aid in N rate adjustment, such as soil nitrate testing and crop canopy sensing. An end-of-season test such as the corn stalk nitrate test (CSNT) cannot provide information for in-season rate adjustment, but instead provides information on N supply for the season that just ended. Research has shown that the concentration of nitrate in the lower corn stalk relates to N available to corn during the season.

Language

en

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Use of the End-of-Season Corn Stalk Nitrate Test in Iowa Corn Production

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