Submitted to: American Chemical Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 4/7/1995
Publication Date: N/A
Technical Abstract: In the Midwest, development of sustainable agricultural practices with benign environmental impacts from pesticides on water quality must be based on an integrated understanding of water movement patterns and herbicide-based weed control strategies. In the deep loess hills of southwestern Iowa, a 40-ha. watershed is under study to determine the impact of continuous corn production under ridge-tillage on both surface water and groundwater quality. Chemical determination in both water and soil samples for one triazine and one acetamide herbicide are used to describe the "water quality profile", a conceptual model for determining chemical interrelationships defined by the cultural practices imposed on the field. This presentation will focus on the transformation and transport of two herbicides within this watershed.