Evaluation of Agricultural Sediment Load Reductions Using Vegetative Filter Strips Of cool Season Grasses

摘要

Vegetative filter strips for controlling sediment generated form the bare ground (i.e., ground not protected by mulch or plant cover) were studied. Plots consisted of a 4,6-m clean-tilled upslope sediment source area and a 12.2-m vegetative filter strip located downslope from the sediment source area. Vegetative filter strips consisted of purestands of six adapted cool season grasses and two cereal grains. Sediment-laden runoff was transported into the upslope edge of each filter strip. Runoff samples were collected form the lower end of each plot and analyzed for nonflow weighted sediment concentration.