1 / 28

Control of bean thrips in navel oranges using ethyl formate fumigation for export to Australia

Control of bean thrips in navel oranges using ethyl formate fumigation for export to Australia. Beth Mitcham , Veronique Bikoba Bill Biasi, and Francine Pupin Department of Plant Sciences University of California, Davis Joseph Morse, UC Riverside. In cooperation with:

hayes
Download Presentation

Control of bean thrips in navel oranges using ethyl formate fumigation for export to Australia

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Control of bean thrips in navel oranges using ethyl formate fumigation for export to Australia Beth Mitcham , Veronique Bikoba Bill Biasi, and Francine Pupin Department of Plant Sciences University of California, Davis Joseph Morse, UC Riverside In cooperation with: Kathie Blyskal and Alfred Hanson, Sunkist Growers The Linde Group

  2. Ethyl Formate • Natural plant volatile • Registered for use in Australia and New Zealand by Linde Corporation as VapormateTM in formulation with CO2 • Previously registered in US for control of insect pests in raisins, but registration expired in the 1980’s • Registration is being pursued by Linde Corporation

  3. Laboratory System for VapormateTM Fumigation

  4. Laboratory Fumigation System

  5. Mortality of Bean Thrips after 1 hour VapormateTM Fumigation of Navel Oranges Lab Tests

  6. Lab Test Methods • 1 hour fumigation with 1% Vapormate at 50°F • Evaluations: • Initial • after 3 wks storage @ 41°F • after 5 days @ 55°F • after 2 days @ 68°F

  7. Laboratory Test

  8. Laboratory Test 1=none; 2=very slight; 3= slight damage; 4= moderate damage

  9. No damage (1) Very slight damage (2) Slight damage (3) Moderate damage (4) Severe damage (5) Very severe damage (6)

  10. Untreated Control Fumigate Before Storage Fumigate After Storage Orange Cove/Sanger Navels-Lab Quality Evaluated after 3 wks @ 41F plus 5 days @ 55F & 2 days @ 68F

  11. Untreated Control Fumigate Before Storage Fumigate After Storage Gillete Navels-Lab Quality Evaluated after 3 wks @ 41F plus 5 days @ 55F & 2 days @ 68F

  12. Untreated Control Fumigate Before Storage Fumigate After Storage Harding & Legget Navels-Lab Quality Evaluated after 3 wks @ 41F plus 5 days @ 55F & 2 days @ 68F

  13. Small Degreening Rooms at Sunkist Growers

  14. Semi-Commercial Test Method • 1% Vapormate for 1 hour at 50°F • Evaluations: • Initial • after 3 wks storage @ 41°F • after 5 days @ 55°F • after 2 days @ 68°F

  15. Mortality of Bean Thrips after 1 hour Fumigation with VapormateTMSunkist Test

  16. Sunkist Test

  17. Sunkist Test 1=none; 2=very slight; 3= slight damage; 4= moderate damage

  18. Untreated Control Fumigate Before Storage Fumigate After Storage Villa Park – Semi-Commercial Test Quality Evaluated after 3 wks @ 41F plus 5 days @ 55F & 2 days @ 68F

  19. Untreated Control Fumigate Before Storage Fumigate After Storage San Antonio – Semi-Commercial Test Quality Evaluated after 3 wks @ 41F plus 5 days @ 55F & 2 days @ 68F

  20. Untreated Control Fumigate Before Storage Fumigate After Storage Golden Valley – Semi-Commercial Test Quality Evaluated after 3 wks @ 41F plus 5 days @ 55F & 2 days @ 68F

  21. Mandarin Lab Test Methodsto Determine Fruit Tolerance • 1 hour fumigation with 1.5% Vapormate at 50°F • 8 replications of control and 16 replications for Vapormate trt. • 3 weeks shelf life at 68°F with weekly visual evaluation

  22. W. Murcott Mandarin Tolerance to Vapormate (1.5%)

  23. Year 3 • Commercial trials • Treat fruit in packed boxes with static fumigation in marine container • Confirm bean thrips mortality with large number of insects • Confirm fruit tolerance with many grower sources • Develop mortality curves for adult bean thrips • Prepare report for APHIS

  24. Vapormate Delivery System

  25. Potential for Vapormate • Needs to be registered in U.S. or • Needs to be approved for bean thrips control in Australia and New Zealand • Already registered there • Develop efficacy data for review • True of other alternative fumigants as well. • GRAS compound • Effective against Light Brown Apple Moth

  26. Mortality of the California Red Scale (Aonidiella aurantii) 3 weeks after a 3-hour Fumigation with Ethyl Formate Y. Aharoni, Y. Nitzan, and A. Copel. (1987)Tropical Science (27) 155-157.

  27. Questions??

More Related