MANURE SAMPLING AND TESTING

        It is strongly recommended that the nutrient content of manure is determined by laboratory analysis annually or when manure handling procedure changes. The analysis report should at least include information of dry matter percentage, soluble salts or electrical conductivity, total N, ammonium N, total phosphorus and potassium.

        The key to an accurate manure analysis is to obtain a representative sample by using proper sampling techniques. A considerable amount of nitrogen can be lost if a sample is not correctly taken, handled, and preserved. Depending on the solid percentage, manure can be classified into solid, semi-solid, slurry and liquid categories. Each type of manure requires different sample collection and land application technique. See Sampling Animal Manure for additional information.

OSU Poultry Waste Management Website

Poultry Litter Marketing Program

CAFO Factsheets

OCES Water Quality Program

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