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Vegetation cover is found to be an ideal solution tomost problems of erosion on steep slopes. Biodegradable geotextiles (GTXs)have been proved to provide sufficient protection against soil loss in theperiod before vegetation reaches maturity, so favouring soil formationprocesses. In this study, 500 g m−2 jute (J500), 400 g m−2 (C400), and 700 g m−2 coir(C700) GTXs were first installed on a 9° slope under“no-infiltration” laboratory conditions, then on a 27° slopeunder natural field conditions. The impact of GTXs on run-off and soil loss wasinvestigated to compare the performance of GTXs under different conditions.Laboratory run-off ratio (percentage portion of control plot) equalled 78, 83, and 91 %, while peak discharge ratio equalled 83,91,and 97 % for J500, C700, and C400 respectively. In the field, a run-off ratio of 31, 62, and 79 %, andpeak discharge ratio of 37, 74, and87 % were recorded for C700, J500, and C400 respectively. All testedGTXs significantly decreased soil erosion. The greatest soil loss reduction in thefield was observed for J500 (by 99.4 %), followed by C700 (by 97.9 %) and C400 (by93.8 %). Irrespective of slope gradient or experimental condition, C400 performed with lower run-off and peak discharge reduction than J500 and C700. The performanceranking of J500 and C700 in the laboratory differed from the field, which may beexplained by different slope gradients, and also by the role of soil, whichwas not included in the laboratory experiment

The effectiveness of jute and coir blankets for erosion control in different field and laboratory conditions