sults in predicting residual soil NO 3 –N (Shaffer et al., 1991; Follett et al., 1994; Shaffer et al., 1995). These Most agricultural systems in the San Luis Valley of south-central researchers used the previous 1.10 version of NLEAP Colorado include rotations that have crops with different rooting that was capable of simulating the effect of management depths. The previous version of Nitrate L...

The relationship between plant roots and interrill soil erosion is important in dynamic soil erosion predictions. Rainstorm simulations of similar intensity (63.5 mm h-1) were conducted in the summer of 1989 on 1 by 1 m field plots of Cecil sandy loam (clayey, kaolinitic, thermic Typic Kanhapludult) to study the effect of different root length densities, L(v) (cm cm-3), of corn (Zea mays L.), d...