Total and Available Nutrients In Manure

Standard manure analysis procedures determine the total N, P, K, and other nutrient content in the manure. Some special analyses such as ammonium-N and water extractable P determine the concentration of specific forms of nutrients in manure. These special tests should be clearly labeled as such on the manure test report.…

Manure Test Record Keeping

Manure nutrient analysis will vary from sample to sample on a farm even with consistent management and careful sampling. Generally, a running average of manure analyses will better reflect what is in the manure than any one sample result. Also, most of the sampling methods outlined here recommend sampling at the time the manure is being spread.…