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Research Project:
Sustainability of Soil Resources in Weed and Crop Management Systems in Mid South Agriculture
Location:
Southern Weed Science Research
Project Number: 6402-12220-002-00
Project Type:
Appropriated
Start Date: May 09, 2001
End Date: May 08, 2006
Objective:
Critically assess effects of weed management and conservation practices on soil biological, chemical, and physical properties; Determine how soil spatial variability can be used to develop site specific management strategies; Determine interactions among weed management effects and factors influencing herbicide degradation, sorption and movement, and microbial degradation pathways; Assess and improve management strategies for minimizing non-target herbicide effects in watersheds.
Approach:
Critical assessment of weed management and conservation practices effects on soil resource sustainability and water quality under Delta conditions is needed. Field investigations will study long-term changes in soil properties associated with residue management practices to determine how spatial variability can be used to develop site-specific management strategies. Effects of using transgenic crops on soil microflora will be evaluated. Factors associated with herbicide dissipation will be studied to determine interactions among weed management practices and herbicide fate. Edge-of-field and wetland management strategies are being evaluated to minimize non-target herbicide effects in MSEA watersheds. Assessments of biological characteristics and herbicide concentrations are being assessed in MSEA lakes. Lake studies evaluate effects of management practices on off site herbicide movement and interactions between lake microflora and herbicide degradation. Evaluations of weed management practices assess efficacy of these practices to aid growers in complying with TMDL requirements.
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