Abstract
ABSTRACT The effects of no-till, disk, chisel, and conventional (mold-board plow) tillage systems (that had rows either on contour or up-and-down slope and com or soybean residue cover) on rainfall infiltration, surface depression storage, and effective hydraulic conductivity were computed from measured rainfall and runoff hydrographs from simulated events on small field plots using a water-balance model developed by Mohamoud et al. (1990). No-till systems generally resulted in significantly greater rainfall infiltration than conventional, disk, or chisel tillage systems. Plots with rows on the contour generally had greater rainfall infiltration than plots with rows up-and-down slope for each tillage system. No-till systems generally had lesser depression storage than conventional, disk, or chisel tillage systems. Depression storage on plots with contoured rows was significantly greater than that on plots with rows up-and-down slope for each tillage system. Conventional tillage systems generally resulted in smaller effective hydraulic conductivity of a soil than no-till, disk, or chisel tillage systems..
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