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Department of Agronomy and Horticulture: Faculty Publications
Environmental quality; Landscape position; Nitri®cation; Acidi®cation; Microbial activity; Indicators; Physical properties
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Field And Laboratory Evaluation Of Soil Quality Changes Resulting From Injection Of Liquid Sewage Sludge, S. Stamatiadis, John W. Doran, Timothy A. Kettler
Field And Laboratory Evaluation Of Soil Quality Changes Resulting From Injection Of Liquid Sewage Sludge, S. Stamatiadis, John W. Doran, Timothy A. Kettler
Department of Agronomy and Horticulture: Faculty Publications
Soil quality changes resulting from repeated or single injection of liquid municipal sewage sludge were evaluated in terraced cropland in eastern Nebraska, USA. Differences in soil properties among sampling locations were explained primarily by two factors, landscape position and sludge injection. Selected chemical properties (pH, EC, NO 3-N) did not generally differ between landscape positions, but soil organic matter (organic C and N) and microbial activity indices (soil respiration, biomass N, available N, mineralization and nitrification rates) were more sensitive indicators of change. Values of these indicators generally increased down-slope from the upper terrace to the grassed waterway on …