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Hawaii

Kauai. Niihau. Oahu. Molokai. Lanai. Maui. Kahoolawe. Hawaii. Area-Wide Pest Management of Fruit Flies in Hawaii. R.F.L. Mau, J. Sugano, E. B. Jang, R. I. Vargas, and L. Wong. Outcomes Sought:. Suppression (control) Sustainable (every year) Environmentally friendly.

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Hawaii

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  1. Kauai Niihau Oahu Molokai Lanai Maui Kahoolawe Hawaii Area-Wide Pest Management of Fruit Flies in Hawaii R.F.L. Mau, J. Sugano, E. B. Jang, R. I. Vargas, and L. Wong

  2. Outcomes Sought: • Suppression (control) • Sustainable (every year) • Environmentally friendly

  3. Hands-on Teaching Philosophy

  4. Population Monitoring Parasitoid Insects Field Sanitation Sterile Insects Protein Bait Male Annihilation 1-2-3 Suppression Research Education Assessment Area-Wide Fruit Fly Management Components

  5. Building a Sustainable Statewide Extension Program • Define • Plan • Measure • Evaluate • Modify

  6. Evaluation Tools • Testimonials • Survey Instruments • Observations

  7. Methods of Measurements • Pre-Post /Post-Then Pre Test • Interviews • Testimonials • Observations • On-Farm Visitations USDA-ARS

  8. Baseline Grower Interviews • Descriptive survey research • Likert-type scales (5 point scales) • Surveyed fruit & vegetable growers USDA-ARS

  9. Purpose of Grower Interviews (Baseline) • Knowledge • Control strategies • Attitudes • Perceptions

  10. Melon flyBactrocera cucurbitae

  11. Applied Biology and Ecology • Melon fly female long maturation ca. 3 weeks • Melon fly has roosting behavior • Use trap plants near crops • Females need protein food • We can kill many females and males before they attain sexual maturity using a system of trap plantings and attract & kill food baits • Melon fly has a long lifespan • Reduce the lifespan of females using a system of trap plantings and attract & kill food baits

  12. Why use bait sprays on melon fly roosting hostplants? • Kills females and males where they live • Weekly application increases chances of killing newly emerged flies before they become sexually mature (25 days) • Kills mature flies and avoids additional egg laying (3-4+ months)

  13. Trap plants Corn • Plant melon fly roosting hosts– maize, tapioca, sudex, or castor oil weed • Roosting host should be on-farm where the food bait can be applied • Spray once a week, more often during rainy periods Sudex Castor oil Tapioca

  14. Oriental fruit flyBactrocera dorsalis

  15. Fruit fly suppression • 10 to 15 ME traps per hectare • Protein spot application once or twice a week starting at fruit set • Sanitation

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