Soybean acreage in Kentucky more than tripled during the 1970s from less than 500,000 acres in 1969 to more than 1.6 million acres by 1979. Currently, 1.2 million acres or more of soybeans are planted annually. A great concern for soil erosion developed due to this expansion onto marginal erodible land. No-till systems of soybean production make it possible to maintain productivity on erodible land while keeping erosion losses within tolerable levels.
Herbek, James H., "No-Till Soybeans" (2000). Agriculture and Natural Resources Publications. 84.