TY - BK AU - Logan,T.J. AU - Baker,J.L. AU - Davidson,J.M. AU - Overcash,M.R. TI - Effects of conservation tillage on groundwater quality: Nitrates and pesticides SN - 0-87371-080-0 U1 - 631.51 PY - 1991/// CY - Chelsea, MI (USA) PB - Lewis, KW - Cropping systems KW - AGROVOC KW - Groundwater KW - Hydrology KW - Nitrates KW - Organic matter KW - Pesticides KW - Quality KW - Soil chemicophysical properties KW - Water management KW - Water resources KW - Tillage KW - Nitrogen fertilizers N1 - Tables, graphs, references, index p. 283-292 ER -