The End-of-Season Cornstalk Test for Excess Nitrogen

Date
1993-12-02
Authors
Blackmer, A.
Morris, T.
Mallarino, A.
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Altmetrics
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Abstract

Recent studies have shown that the N status of a corn crop can be assessed by measuring nitrate concentrations in the lower portion of cornstalks at the end of the growing season. This finding lead to the development of a new tissue test that can be used to evaluate N management practices used in any field in any year. This evaluation gives feedback that can be used to improve N management. The test is called the "end-of-season cornstalk test". It is a management tool that should be of interest to all corn producers and all who advise corn producers. The purpose of this paper is to describe the test and how it should be used.

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