By WILLIAM NEUMAN and ANDREW POLLACK
c.2010 New York Times News Service
DYERSBURG, Tenn. – For 15 years, Eddie Anderson, a farmer, has been a strict adherent of no-till agriculture, an environmentally friendly technique that all but eliminates plowing in order to curb erosion and the harmful runoff of fertilizers and pesticides.
But not this year.
On a recent afternoon, Anderson watched as tractors crisscrossed a rolling field – plowing and mixing herbicides into the soil to kill weeds where soybeans will soon be planted.