Animal waste is processed to form a biomaterial that is employed as a coating lay& for typical fertilizer particles. The biomaterial coating layer can be used neat or with additives and serves to do one or more or any combination of the following: (a) 5 impart a slow or controlled release property to the fertilizer, (b) prev 0 n ? o l4-i?iluB?? the tendency of the fertilizer particles to cake together, or (c) prevent or reduce the tendency of the fertilizer particles to create dust. The biomaterial coating layer can also release nutrients when used as part of a fertilizer composition.
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