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ARS Home » Midwest Area » Columbia, Missouri » Cropping Systems and Water Quality Research » Research » Publications at this Location » Publication #88010
Title: HERBICIDE TRANSPORT IN SURFACE WATER AT FIELD, WATERSHED, AND BASIN SCALES

Author
item Lerch, Robert
item Alberts, Edward
item GHIDEY, FESSEHAIE - UNIV OF MO
item BLANCHARD, PAUL - UNIV OF MO

Submitted to: American Chemical Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 3/1/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: In the Midwestern United States, herbicide transport in surface waters represents one of the major impacts of agriculture on the environment. Soil-applied, preemergent herbicides are present during late spring to early summer in nearly every major river basin in the Midwest. The factors affecting herbicide transport in surface water are a function of the specific chemical properties of the herbicide and their interaction with soils, climate, and land-use (i.e., compound usage and management practices). The relative importance of these factors to herbicide transport changes with scale. Concentration and mass flux data of atrazine, alachlor, and metolachlor, which have been monitored in northern Missouri for the past several years at all three scales, will be presented. In addition, the importance of metabolite transport and their contribution to the total mass flux of atrazine at the watershed and basin scales will be discussed.