September 19, 2014
| Posted in Nutrient Management
Source: George Silva, Michigan State University Extension
When nitrogen (N) deficiencies occur early and mid-season, corn leaves on the lower part of the plant begin to turn yellow prematurely starting from the leaf tip and progressing towards the stalk (Photo 1). Lower leaves will be affected first as N is mobile and will be reallocated to the upper leaves. The yellow color will turn brown followed by death of lower leaves, leading to a condition known as firing (Photo 2).
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