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Water Content of Sludge-injected Soil Growing Wheat
Published online by Cambridge University Press: 24 August 2009
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Municipalities are injecting sewage sludge into soil—as a means of disposal, to avoid the problems of odours, pests, and runoff, and to avert public disapproval associated with application on the surface. The sludge injected is mainly liquid (94–99%), but its effect on soil-water content in the field has not been sufficiently reported on. The objective of the project here described was to determine, in a subhumid region, whether the liquid in sludge changed the water status of soil compared with that of soil with inorganic fertilizer. In addition, growth of Winter Whẽat (Triticum aestivum L. em. Thell.), grown on dryland and fertilized with the sludge or with inorganic fertilizer, was monitored. The experiment, carried out during the 1980–81 growing-season, was done at the Manhattan, Kansas, sewage-sludge farm, where aerobically digested sludge has been injected since 1976.
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- Copyright © Foundation for Environmental Conservation 1983
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