Patricia A. Bollich, Adhikari, Achyut
Composted manure is at a much lower risk for contaminating crop and water sources than raw manure; however, the best practice is to cover and store the compost as far away as possible from water sources and produce fields. When assessing your farm's risk, some factors to consider are the field location (uphill or downhill) from compost, likelihood of wind-spread, presence of runoff or leaching, amount of compost being stored, and any physical barriers that are present.
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The LSU AgCenter and the LSU College of Agriculture