Start Date

30-11-1995 12:00 AM

Description

Land application of animal manures can supply N needed for com production. The amounts of N supplied, however, vary greatly with source of manure, type of storage, method of application, time of application, rate of application, and weather after application. A major problem is that substantial losses of plant-available N by ammonia volatilization, leaching, denitrification, and/or immobilization frequently occur soon after the manure is applied. Another problem is that it is difficult to determine how rapidly N in the manure becomes available to plants. These problems make it difficult to estimate how much fertilizer N should be applied.

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Nov 30th, 12:00 AM

Soil Testing to Guide Nitrogen Fertilization in Manured Cornfields

Land application of animal manures can supply N needed for com production. The amounts of N supplied, however, vary greatly with source of manure, type of storage, method of application, time of application, rate of application, and weather after application. A major problem is that substantial losses of plant-available N by ammonia volatilization, leaching, denitrification, and/or immobilization frequently occur soon after the manure is applied. Another problem is that it is difficult to determine how rapidly N in the manure becomes available to plants. These problems make it difficult to estimate how much fertilizer N should be applied.