The effect of tillage depth, tillage speed, and soil condition on chisel tillage erosivity

摘要: ABSTRACT: In this study, a series of tillage experiments were set up to investigate the effect variations in depth and speed on net soil displacement associated erosion rates for downslope chisel loamy under two different conditions: 1.) consolidated stubble vegetation (primary pass), 2.) freshly tilled, loosened (secondary pass). The experimental results show that average distance is not only function slope gradient, but also condition, depth, speed. A model incorporating these additional effects was proposed validated using data available literature: can be successfully predicted, their absolute magnitude probably controlled by implement geometry, which at present incorporated into model. fact distances are affected gradient complicates calculation erosivity. However, if accounted for, use single transport coefficient k still possible without an unacceptable loss accuracy. Using model, nomograms have been developed allow one evaluate and/or erosivity given operation. These valuable tool evaluating strategies remediate due tillage. Finally, experiment Belgian Loam Belt very erosive, leading annual exceeding 2 mm yr−1 (0.08 yr−1) locally.