Integrated Crop Management News
 

Document Type

Article

Publication Date

6-25-2001

Abstract

Fall or early spring applications of anhydrous ammonia commonly are assumed to prevent deficiencies of nitrogen (N) in young corn plants. Corn plants in many fields this year indicate that this assumption should be questioned.

Corn plants often show exactly when their roots first reach bands created by injection of anhydrous ammonia. This time is most detectable when the bands are not parallel to rows of plants. Plants directly over the bands benefit first. These plants become darker green and grow more rapidly than plants not directly over the bands. For a few days, streaks of green plants reveal the exact locations of the bands. These streaks tend to disappear as root systems develop enough that all plants reach the fertilizer.

Copyright Owner

Iowa State University

Language

en

File Format

application/pdf

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