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Vegetation and soil quality effects from hydroseed and compost blankets used for erosion control in construction activities
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Journal Article
Vegetation and soil quality effects from hydroseed and compost blankets used for erosion control in construction activities
2006
Overview
Soil erosion is one of the biggest contributors to nonpoint source pollution in the United States. Soil loss rates from construction
sites are 10 to 20 times that of agricultural lands. The use of surface applied organic amendments has been shown to reduce
runoff and erosion through enhanced vegetation growth and soil quality characteristics. The objective of this study was to
evaluate the vegetation growth and soil quality effects from compost blanket and hydroseed applications to soils disturbed
by construction activities. Four types of compost blankets, two hydroseeded treatments (silt fence and mulch filter berm)
and a bare soil (control) were applied in field test plots. Treatments were seeded with common Bermuda grass ( Cynodon dactylon ). Vegetative growth (percent cover and biomass of weeds and grasses) and soil quality characteristics were evaluated periodically
over one year and 18 months, respectively. Results showed compost blankets provided an average of 2.75 times more vegetative
cover than hydroseed after three months. After one year, cover was similar, but hydroseed had significantly greater weed biomass
than compost and a greater ratio of weed biomass relative to Bermuda grass biomass. One type of compost blanket increased
surface soil extractable organic carbon, and another type increased organic matter in 0 to15 cm (0 to 6 in) soil depths relative
to hydroseed treated soils. A one-time application of hydroseed that included mineral phosphorus (P) fertilizer elevated surface
soil P after 18 months. On construction sites where disturbed soils are prone to erosion and vegetation establishment is required,
compost applications will promote quicker vegetation cover with less weed growth than hydroseeding. Some compost erosion control
blankets have the ability to increase soil quality characteristics relative to hydroseed applications within 18 months of
application.
Publisher
Soil and Water Conservation Society,Soil & Water Conservation Society,Taylor & Francis Ltd
Subject
/ Agronomy. Soil science and plant productions
/ Biological and medical sciences
/ Biomass
/ Composts
/ Control
/ Fundamental and applied biological sciences. Psychology
/ General agronomy. Plant production
/ Georgia
/ Grasses
/ Methods
/ Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries
/ Soil erosion, conservation, land management and development
/ Soil-plant relationships. Soil fertility. Fertilization. Amendments
/ sowing
/ Weeds
