Progress 02/01/05 to 12/31/05
Outputs
Progress Report 4d Progress report. This report serves to document research conducted under a Reimbursable Agreement between ARS and the USDA Animal and Plant Health Inspection Service. Additional details of research can be found in the report for the parent CRIS 6202-22320-002-00D Ecologically-Based Management of Boll Weevils and Post-Eradication Crop Pests. The National Boll Weevil Eradication Program has as its mission the eradication of the boll weevil from the U.S. Success of the Program largely hinges on the effective trapping of wild boll weevils as an indicator of weevil density; establishment of insecticide spray schedules under the Program hinges primarily on trap data. The goal of this project is to develop solid scientific data on the dynamics of pheromone release from and stability in current trap set-ups; the pheromone attractants are the key component of the trapping system. During FY 2006, boll weevil pheromone dispensers (10 mg grandlure or 25 mg
grandlure and 30 mg eugenol) were placed inside a ventilated fume hood and exposed for 3, 7, 14, 21, or 28 days at constant temperature. Residual grandlure and eugenol were obtained from these aged pheromone dispensers by solvent extraction, and quantities of chemical constituents were determined by gas chromatography. In a field study, temperature was measured inside plastic pheromone traps to determine the influence of ambient temperature on the release rate and pheromone composition of standard and extended lures. Release rates of grandlure and eugenol as defined by this project will be used by the cooperator to determine the effective duration of the pheromone dispensers. These results quantified the initial concentrations and release rates of volatile compounds from pheromone dispensers, and represent a significant contribution to effective management of pheromone dispensers and improved trap protocols for use by Boll Weevil Eradication Programs throughout the Cotton Belt.
This project expired in FY 2006.
Impacts
(N/A)
Publications
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Progress 10/01/04 to 09/30/05
Outputs
4d Progress report. This report serves to document research conducted under a Reimbursable Agreement between ARS and the USDA Animal and Plant Health Inspection Service. Additional details of research can be found in the report for the parent CRIS 6202-22320-001-00D Ecologically-Based Management of Field Crop Pests and Pests of Man and Animals. This is a new project, with the goal of developing more effective protocols for use of boll weevil attractants for support of the Boll Weevil Eradication Program. In FY 2005, boll weevil pheromone dispensers (10 mg grandlure or 25 mg grandlure and 30 mg eugenol) were placed inside a ventilated fume hood and exposed for 3, 7, 14, 21, or 28 days at constant temperature. Residual grandlure and eugenol was recovered from exposed pheromone dispensers by solvent extraction, and quantities of chemical constituents were determined by gas chromatography. Release rates of grandlure and eugenol will be used to determine the effective
duration of the pheromone dispensers. These results quantified the initial concentration and release rate of volatile compounds from pheromone dispensers, and will contribute to effective management of pheromone dispensers and improved trap protocols by Boll Weevil Eradication Programs throughout the Cotton Belt.
Impacts
(N/A)
Publications
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