Giles, A program to reduce nitrogen run off to the Chesapeake bay has been in place since 1987, originally involving the Federal government with MD, VA, PA, and DC. NY, Del. and W. Va. have joined in recent years. http://www.chesapeakebay.net/nutr2.htm MD passed a Nutrient Management law in 1998 which applies to farmers with annual sales of $2,500 or more. http://tinyurl.com/ckas4 steve Steve R. M15 #119 Lexington, KY