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4.2.3 Control of Erosion by the Addition of Compost
ОглавлениеSoils that are rich in silt, with low clay deposits, and organic material, erode fast. Compost helps to decrease soil erodibility. The coarseness of the particles in the compost reduces flow velocity. Coarse particles are heavier and do not erode easily. Compost also helps in the establishment of rapid vegetation, and this slows surface flow velocity. Compost-amended soils have reduced erosion by several orders of magnitude over untreated soils (Anastasi et al. 2005). Mulch from wood residual reduced erosion when compared with the control. Hydro compost (consisting of three parts dairy manure compost and one part recycled paper mulch tackifier and water) helps lower soil erosion rates. It increases the seed germination percentage compared with mat fiber mulch with guar tackifier. Compost also plays a vital role in reducing surface and subsurface run-off from the land (Taiwo 2011).
Goldstein (2002) suggested that soils amended with compost have indicated delays in surface degradation and decreases in sediment run-off.
On steep embankments of roads and highways, compost is used to reduce soil erosion and establish turf, as compost forms a thick permanent growth to improve soil infrastructure. Turfgrasses are challenging to maintain and sensitive to turf diseases, pests, insects, and soil compaction. Turf managers were using chemical fertilizers, pesticides, fungicides, etc. or a combination of all three, which are rather harmful to the environment. However, turf managers now prefer to use compost for the remediation of turfgrasses.