To take better advantage of its nutrients, apply manure just before the growing season, preferably to N-requiring crops. If possible, incorporate manure soon after application to conserve as much N as possible. Because of its nutrient content, manure has a dollar value and can be thought of as a commodity. Farmers with manure in excess of needs, rather than using continued heavy applications, should consider some type of arrangement with farmers who could use more. Regardless of the formality of the arrangement, a manure analysis is an absolute first step.
Soil testing is extremely important in manure management.
Soil tests provide information that can be used to decide where manure can do the most good in supplying nutrients required by the crop. The lower the soil test level, the higher the probability of a response to adding the nutrient. Soil tests also help monitor the effect of manure application on soil phosphorus and potassium levels. Consistent use of this tool can be effective in detecting nutrient imbalances or excesses so that corrective action may be taken. Cropland benefits little from extremely heavy manure application rates.