The objective was to measure the efficiency of grass filter strip in reducing atrazine non-point source pollution. The small watersheds 1m X 3m were situated in Coastal Bermudagrass area. Plot design included equipment to apply a uniform flow of runoff, a catchment device and calibrated tankto store and measure the flow. The runoff was treated with predetermined concentrations of herbicides, nitrate and phospophates in a storage tank prior to a 1 hour simulated runoff event Soil samples, plant samples and water samples were collected during each simulated event.

This study is part of Monty Dozier's PhD studies conducted in cooperation with the USDA-ARS, Grassland, Soil and Water Research Laboratory at Temple, Texas.

Plot Layout

Catchment Device

Monty setting up a watershed

Runoff Applicator

December 15, 1999
Dennis Hoffman, Project Leader
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