7 ms·He uses tons of chemical fertilizer not pesticides big difference.by dougp 17y agoHe uses tons of chemical fertilizer not pesticides big difference.pmorici 17y agoIsn't nitrate run off from chemical fertilizer a big polution problem for rivers and lakes?glymor 17y agoIt's called aquatic hypoxia: http://arstechnica.com/science/news/2008/08/the-growing-problem-of-aquatic-hypoxia.ars http://arstechnica.com/science/news/2008/08/the-growing-prob...