• Insect Crop Losses and Insecticide Usage for Cantaloupes and Watermelons in Central Arizona: 2004 – 2006

      Palumbo, John; Fournier, Al; Ellsworth, Peter; Nolte, Kurt; Clay, Pat; Byrne, David N.; Baciewicz, Patti (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006-09)
      Impact assessment is central to the evolution and evaluation of our IPM programs. Quantifiable metrics on insecticide use patterns, costs, targets, and frequency, crop losses due to all stressors of yield and quality, and other real world economic data (e.g., crop value) are our most objective tools for assessing change in our systems. We recently initiated a project to measure the impact of insect losses and insecticide uses in cantaloupes and watermelons grown in Yuma, AZ and the Bard-Winterhaven area of Imperial County, CA. The data generated in this report is useful for responding to pesticide information requests generated by EPA, and can provide a basis for regulatory processes such as Section 18 or 24c requests, as well as for evaluating the impact of our extension programs on risk reduction to growers. This information also confirms the value of PCAs to the melon industry by showing the importance of cost-effective management of insect pests in desert production.
    • Insect Crop Losses and Insecticide Usage for Head Lettuce in Arizona: 2004 – 2006

      Palumbo, John; Fournier, Al; Ellsworth, Peter; Nolte, Kurt; Clay, Pat; Byrne, David N.; Baciewicz, Patti (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006-09)
      Impact assessment is central to the evolution and evaluation of our IPM programs. Quantifiable metrics on insecticide use patterns, costs, targets, and frequency, crop losses due to all stressors of yield and quality, and other real world economic data (e.g., crop value) are our most objective tools for assessing change in our systems. We recently initiated a project to measure the impact of insect losses and insecticide uses in head lettuce grown in Yuma, AZ and the Bard-Winterhaven area of Imperial County, CA. The data generated in this report is useful for responding to pesticide information requests generated by EPA, and can provide a basis for regulatory processes such as Section 18 or 24c requests, as well as for evaluating the impact of our extension programs on risk reduction to growers. This information also confirms the value of PCAs to the lettuce industry by showing the importance of cost-effective management of insect pests in desert lettuce production.
    • Insect Crop Losses and Insecticide Usage for Spring Melons in Southwestern Arizona: 2004 – 2006

      Palumbo, John; Fournier, Al; Ellsworth, Peter; Nolte, Kurt; Clay, Pat; Byrne, David N.; Baciewicz, Patti (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006-09)
      Impact assessment is central to the evolution and evaluation of our IPM programs. Quantifiable metrics on insecticide use patterns, costs, targets, and frequency, crop losses due to all stressors of yield and quality, and other real world economic data (e.g., crop value) are our most objective tools for assessing change in our systems. We recently initiated a project to measure the impact of insect losses and insecticide uses in cantaloupes and watermelons grown in Yuma, AZ and the Bard–Winterhaven area of Imperial County, CA. The data generated in this report is useful for responding to pesticide information requests generated by EPA, and can provide a basis for regulatory processes such as Section 18 or 24c requests, as well as for evaluating the impact of our extension programs on risk reduction to growers. This information also confirms the value of PCAs to the melon industry by showing the importance of cost-effective management of insect pests in desert production.
    • Optimal Spray Timing of Oberon and Courier for Managing Bemisia Whiteflies in Spring Cantaloupes

      Palumbo, John C.; Byrne, David N.; Baciewicz, Patti (College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006-09)
      Studies were conducted on spring cantaloupes from 2004-2006 to evaluate two adult and nymph based thresholds used for timing the application of Oberon (spiromesifen) and Courier (buprofezin) in spring melons for controlling whiteflies. The results of these studies demonstrate that these selective insecticides offer melon growers effective foliar management alternatives for controlling whiteflies. Both Oberon and Courier provided economic control of whitefly nymphs and significantly prevented sooty mold contamination when applied after populations exceeded either an adult threshold of 2 adults per leaf or an immature threshold or 0.5 large nymph per 2 cm² leaf disc. Applied at these thresholds, both compounds provided consistent residual suppression of whitefly immature population growth for 21-28 days under spring growing conditions.