Date:2/22/2013

quality in runoff from fields amended with 1-, 2-, or 4-year application rates of manure. The scientists found that runoff loads of dissolved phosphorus, total phosphorus, nitrates, nitrogen, and total nitrogen were much higher from plots with residue cover. The team also observed that runoff from fields amended with 4-year application rates of manure had significantly higher levels of total phosphorus and dissolved phosphorus than fields amended with 1-year or 2-year manure rates.

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Contact: Ann Perry ann.perry@ars.usda.gov 301-504-1628 United States Department of Agriculture - Research, Education and Economics Source:Eurekalert

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