High levels of fertilizer and pesticides, needed when farmers try to produce high yields of the same crop year after year, pollute water supplies  Experts ttherefore urge farmers to diversify their crops and to rotate their plantings yearly
To receive governmental price-support benefits for a crop, farmers must have produced that same crop for the past several years
The only solution to the problem of water pollution from fertilizers and pesticides is to take farmland out of production.