Start Date

2-12-1999 12:00 AM

Description

Nitrogen fertilizer recommendations in the past focused more on rates of application than on methods and times of application. Old rules of thumb based on yield goals and credits, for example, made no distinction between optimal rates when N was applied in the fall and optimal rates when N was applied in May. Such recommendations essentially ignored evidence that spring rainfall can cause substantial losses of fall-applied N. Losses of N were easy to ignore because they were not readily detectable.

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Dec 2nd, 12:00 AM

Fertilization to Rescue Corn Crops Following Losses of Fall Nitrogen

Nitrogen fertilizer recommendations in the past focused more on rates of application than on methods and times of application. Old rules of thumb based on yield goals and credits, for example, made no distinction between optimal rates when N was applied in the fall and optimal rates when N was applied in May. Such recommendations essentially ignored evidence that spring rainfall can cause substantial losses of fall-applied N. Losses of N were easy to ignore because they were not readily detectable.