Record Display for the EPA National Library Catalog

RECORD NUMBER: 682 OF 4531

OLS Field Name OLS Field Data
Main Title Environmental Implications of Conservation Tillage: A Systems Approach.
Author Bailey, G. W. ; Mulkey, L. A. ; Swank, R. R. ;
CORP Author Environmental Research Lab., Athens, GA.
Year Published 1985
Report Number EPA/600/D-85/147;
Stock Number PB85-237089
Additional Subjects Cultivation ; Conservation ; Agriculture ; Farm crops ; Soils ; Water quality ; Environmental impacts ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-237089 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 36p
Abstract
Conservation tillage is projected to be the major soil protection method and candidate best management practice for improving surface water quality. Environmental and health implications as well as the agronomic virtues of conservation tillage must be identified and evaluated. A conceptual framework--mass balance approach--is developed identifying those system variables influenced by conservation tillage. A qualitative assessment is then made of the impact, mainly offsite in nature, of conservation tillage on the various exposure pathways of pesticides to human and aquatic ecosystems. Results from such an analysis suggest an increased potential for atmospheric losses of pesticides, a decrease in runoff and soil-erosion-related losses, but an increase in plant-residue-associated erosion as well as increased potential leaching through the unsaturated zone to groundwater. Major concerns, therefore, focus on the quantitative tradeoffs between runoff losses in water, leaching losses to groundwater, and enhanced atmospheric releases. Literature reviews, in general, substantiated the above speculations as to the impact of conservation tillage on soil properties, processes, and activities, and on pesticide transport and transformation.