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  • Row crops, field tiles causing water quality problems, studies say

    Average annual predicted January to June total P (A), dissolved reactive P (B), and particulate P (C) yields for the counties in the Mississippi River basin from 1997 to 2006.

    Average annual predicted January to June total P (A), dissolved reactive P (B), and particulate P (C) yields for the counties in the Mississippi River basin from 1997 to 2006.

    Image courtesy Mark David

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  • Editor's note: To contact Mark David, call 217- 333-4308; email mbdavid@illinois.edu.