Record Display for the EPA National Library Catalog

RECORD NUMBER: 87 OF 147

OLS Field Name OLS Field Data
Main Title Modeling the Impact of Conservation Tillage Practices on Pesticide Concentrations in Ground and Surface Waters.
Author Donigian, A. S. ; Carsel, R. F. ;
CORP Author Environmental Research Lab., Athens, GA. ;AQUA TERRA Consultants, Mountain View, CA.
Year Published 1987
Report Number EPA/600/J-87/089;
Stock Number PB88-125489
Additional Subjects Pesticides ; Models ; Water supply ; Ground water ; Surface waters ; Cultivation ; Concentration(Composition) ; Runoff ; Leaching ; Soil mechanics ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB88-125489 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 12p
Abstract
To analyze the environmental fate and migration of pesticides applied to croplands as they are affected by conservation tillage practices, pesticide models for leaching, surface water and ground water were selected and an application method was developed. Fourteen different pesticides applied to corn and soybeans were analyzed to determine probable concentrations in ground water and surface water under conventional tillage, reduced tillage and no tillage practices; the Lake Erie Basin was the study site. Surface runoff loadings and concentrations decreased under the conservation tillage scenarios, but ground water loadings and concentrations increased as a result of the decreased runoff and increased ground water recharge. Reduced tillage decreased surface runoff loads and concentrations by about 50% as compared with conventional tillage, and no tillage resulted in another 20% reduction. The pesticides with the highest surface runoff loads and concentrations were those with K sub oc values generally less than 200 ml g-1 and root zone half-lives greater than 40 d. (Copyright (c) 1987 SETAC.)