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Use of composted waste materials in erosion control

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The objective of this series of studies wasto investigate the use of compost and mulch materialsin erosion control and stabilization projects. The firstphase of the study looked primarily at the impacts ofsurface blankets of twelve different compost and mulchmaterials on solids loss and water quality and foundthat mulch blankets produced runoff with the lowestsolids and nutrient contents. Compost blankets weresignificantly less erodible than bare soil, and compostmaturity seemed to be an important factor as respirationrate was significantly correlated to solids loss. Rawpoultry litter produced more runoff and erosion thanbare soil and three different poultry litter composts.Effective erosion control strategies must both protectthe soil surface and establish and sustain vegetation.The second part of this project looked at the impacts ofthese same materials on grass establishment andgrowth. The findings indicated that the composttreatments produced more vegetative biomass andcover than the mulch treatments. The final phase ofthis study compared four combinations of compostblankets and berms to both bare soil and conventionaltreatments such as hydroseeding and silt fences.Preliminary results indicate that the use of compostblankets and berms offer significant improvements inwater quality through improved erosion control,reduction in nutrient loads and improved theestablishment of vegetation. Further analysis is ongoingto document the long term changes in soil qualityand vegetation using these treatments. This paper willonly report on the first phase of the study due to spacelimitations.

2003 Georgia Water Resources Conference -

Autor: Risse, L. Mark - Faucette, L. B. - -


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