2012 Annual Report
1a.Objectives (from AD-416):
Determine magnitude of the residues of pesticides in minor crops and conduct other residue studies as appropriate in support of registration petitions submitted to EPA by IR-4. Work primarily with reduced-risk compounds to replace uses that continue to be lost due to the tolerance reassessment mandated by the Food Quality Protection Act (FQPA) of 1996.
1b.Approach (from AD-416):
All work will be in compliance with 40 CFR Part 160, "Good Laboratory Practice Standards." Analytical methodology, Standard Operating Procedures, and GLP documentation will be updated for the project as needed. Priorities and assigments of crop/pesticide combintations for analysis are determined at an annual meeting. Crop samples will be obtained from IR-4 Field Projects and analyzed by methods approved by EPA. Laboratory residue data and all required documentation will be reported to IR-4 Headquarters.
At the request of growers, pesticide residue research was conducted on pesticide/crop combinations (projects) to address specific insect, weed, and plant disease problems on minor crops. During fiscal year 2012, the Tifton Interregional Research Project (IR-4) Laboratory located at the Crop Protection and Management Research Unit, Tifton, Georgia, initiated or continued pesticide residue analyses on samples from 5 projects covering 33 field trials conducted throughout the United States by ARS and National Institute of Food and Agriculture field cooperators. Work was completed and final reports submitted to IR-4 Headquarters for another 7 projects covering 40 field trials: the fungicide propiconazole on mustard greens and radish; the herbicide halosulfuron-methyl on grape and pear; the insecticide fenpropathrin on barley and sweet potato; and the insecticide malathion on flax. EPA will establish pesticide residue tolerances based on this data so the growers of these crops will have the pest control tools that they requested. The laboratory also agreed to receive samples from 8 new projects covering 67 field trials during current year 2012. Samples from another 9 projects covering 57 field trials, temporarily held in freezer storage as a favor for IR-4 Headquarters, were transferred to laboratories for analysis.