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‘Manureshed’ Model Reconnects Crop and Livestock Production

USDA Agricultural Research Service (ARS) scientists have developed the concept of “manuresheds” that would link surplus manure nutrients from livestock operations with the nutrient sinks offered by crop production. Researchers noted that most animal farms have insufficient land for using all of their manure, while crop producers rely on commercial fertilizers to supply the nutrients their crops need. They classified counties nationwide as either “sources” or “sinks” and developed a system that highlights opportunities for redistributing manure within regional “manuresheds.”