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Research Project:
Management Practices to Reduce Movement of Agro-Chemicals to Surface and Ground Waters in Nc U.S.
Location:
Soil and Water Management Research
Project Number: 3640-12130-003-00
Project Type:
Appropriated
Start Date: Dec 29, 2001
End Date: Dec 28, 2006
Objective:
Determine subsurface features that control field-scale losses of agrochemicals to ground water in glacial soils; characterize, quantify, and integrate sorption/desorption, degradation, and transport processes of herbicides in soils to minimize transport from point of application to surface and ground waters; develop management practices at the field to landscape scale that will reduce loss of nutrients and herbicides to surface and ground waters in North Central U.S. climates.
Approach:
Results from laboratory and field experiments will be used to develop management practices at the field to landscape scale that reduce loss of nutrients and herbicides to surface and ground waters. Variations in surface and subsurface topography will be measured using various techniques to determine the points on the landscape where water, nutrients, and herbicides will flow over and through soil into water sources. Spatial and temporal patterns in herbicide concentration at the landscape scale will be mapped and analyzed against soil property data and laboratory data on herbicide/soil interactions using multivariate and spatial statistical methods to elucidate any spatial correlation between herbicide concentration and soil properties to determine the potential for site-specific management herbicides. Results of tillage and residue management studies, which measure preferential flow properties and N and C transformations, will be put into practice across a landscape to control infiltration and preferential flow properties to minimize water contamination.
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