Water and bromide dynamics in a soil amended with different urban composts

Urban waste compost additions to soil can increase soil organic matter content and improve soil physical conditions, leading to agronomic and environmental benefits. The need for information still exists to evaluate more precisely the effects of urban waste compost on soil physical properties. Three...

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Bibliographic Details
Published inVadose zone journal Vol. 12; no. 1; pp. 1 - 11
Main Authors Chalhoub, Maha, Coquet, Yves, Vachier, Pierre
Format Journal Article
LanguageEnglish
Published Soil Science Society of America 01.02.2013
The Soil Science Society of America, Inc
Soil science society of America - Geological society of America
Subjects
Albeluvisols
animal waste
bromide ion
bromine
composting
Continental interfaces, environment
convection-dispersion equation
dynamics
electrical methods
Environmental geology
Environmental Sciences
Europe
Feucherolles France
France
Geochemistry
geophysical methods
Global Changes
halogens
human waste
municipal waste
rock, sediment, soil
Sciences of the Universe
sewage sludge
soils
solid waste
solute transport
solutes
time domain reflectometry
topsoil
tracers
transport
unsaturated zone
waste disposal
waste management
water
Western Europe
Yvelines France
MUNICIPAL SOLID-WASTE
PHYSICAL-PROPERTIES
SEWAGE-SLUDGE
LOAM SOIL
PREFERENTIAL FLOW
RETENTION
HYDRAULIC-PROPERTIES
ORGANIC-MATTER
POROUS-MEDIA
SOLUTE TRANSPORT
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Summary:Urban waste compost additions to soil can increase soil organic matter content and improve soil physical conditions, leading to agronomic and environmental benefits. The need for information still exists to evaluate more precisely the effects of urban waste compost on soil physical properties. Three types of urban waste composts, a biowaste compost (BIO), a municipal solid waste compost (MSW), and a co-compost of green waste and sewage sludge (GWS), were applied once every 2 yr on a loamy soil for 10 yr. The effects of the three composts on soil water and solute transport dynamics were tested. Soil water matric head and water content were monitored using tensiometers and time domain reflectometry probes, respectively. A Br- tracer experiment was also conducted to evaluate the effect of compost application on nonsorbing solute transport. Water content measurements showed that the application of composts significantly (P < 0.05) affected soil water content in the plow layer, with average increases of 0.03 cm3 cm-3 for the GWS and MSW compost, and 0.015 cm3 cm-3 for the BIO compost compared with a control without organic amendment. Bromide tracing during the wetting period showed that the application of urban waste composts did not affect the soil's potential for leaching. The application of composts did reduce soil evaporation during the spring, however, which in turn favored downward Br- migration in the soil.
Bibliography:Three types of urban waste composts were tested for their effect on water and solute transport in a cultivated silt loam bare Albeluvisol. Compost addition was found to increase water retention in the topsoil by 0.015 to 0.03 cm
cm
3
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Bromide leaching was larger in compost‐amended plots than in the control due to smaller soil water evaporation.
ISSN:1539-1663
1539-1663
DOI:10.2136/vzj2012.0056