Wu, JunJie; Babcock, Bruce A.

American Journal of Agricultural Economics Vol. 80 no. 3 (January 1998): 494-511.

Presents a study which looked at farmers' choice of conservation, tillage, rotation and soil testing practices in the Nebraska corn area. Estimation of various combinations of the practices impact on fertilizer use, corn yield, and soil erosion; Details on a polychotomous-choice selectivity model; Factors which affect conservation practices.