Individual study: Reduction of runoff and soil loss over steep slopes by using vetiver hedgerow systems
Donjadee S. & Tingsanchali T. (2013) Reduction of runoff and soil loss over steep slopes by using vetiver hedgerow systems. Paddy and Water Environment, 11, 573-581
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Plant new hedges
A controlled, replicated experiment in 2011 on a sandy loam in Thailand (Donjadee & Tingsanchali 2013), found that vetiver Vetiver nemoralis hedgesreduce runoff volume by 31-69% and soil loss by 62-86% compared to the control without hedges. Vetiver hedges (vetiver grass barrier planted along contours) were planted on three slope gradients (30, 40 and 50%). There were four plots on each slope, 2 x 6.71 m in size. One plot on each slope was a control without hedges. An artificial rainfall system was used to test rainfall erosion, applying rainfall intensities of: 35, 60, 85, 110, 135, and 160 mm/h. There were three replicates. Runoff and soil loss were measured.