Study

Reduction of runoff and soil loss over steep slopes by using vetiver hedgerow systems

  • Published source details 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.

Actions

This study is summarised as evidence for the following.

Action Category

Plant new hedges

Action Link
Soil Fertility
  1. 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.

     

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