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Arthropod pests of strawberry in Florida

Arthropod pests of strawberry in Florida

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Arthropod pests of strawberry in Florida

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  1. Arthropod pests of strawberry in Florida James Price (Entomologist) University of Florida GCREC Bradenton & Dover

  2. Farmers grow excellent strawberries in Florida

  3. Healthy leaves produce excellent strawberries

  4. The spider mite is the worst arthropod pest in Florida

  5. Spider mites affect leaves and reduce production

  6. Strawberry leaves with spider mites

  7. Integrated Pest Management (IPM) scout gathers information

  8. With pesticides for control, spider mites return

  9. Predator mites (Phytoseiulus persimilis) give better control

  10. Scout the fields: 1-2 times per week 100 leaves per area Release predatory mites when: 2-4 new leaves are on plants 2-5% of the ‘Selva’ leaves have mites or 5-10% of the other leaves have mites Use compatible pesticides carefully Summary of system

  11. 2,000 predatory mites / bottle

  12. Release five predatory mites for every five plants

  13. Spider mites Predatory mites With biological control, mite problems do not return

  14. Natural beneficial insects stay

  15. Pesticides compatible with Phytoseiulus persimilis predators: • Bacillus thuringiensis • Vendex® fenbutatin-oxide • Captan WP • Quadris ® azoxystrobin • Elevate ® fenhexamid

  16. Pesticides to use with some caution: • Sulphur • Agri-Mek® abamectin • Diazinon ® • M-Pede soap • Malathion

  17. Guthion® azinphosmethyl Brigade® bifenthrin Danitol ® fenpropathrin Sevin® carbaryl Lorsban®, Dursban ®, chlorpyrifos Thiodan® endosulfan Lannate ® methomyl Dibrom ® naled Parathion ® Kelthane ® dicofol Benlate ® benomyl Topsin M ® thiophanate-methyl Pesticides not compatible with P. persimilis predators

  18. Benefits of P. persimilis predators • Control mites • Excellent late season control • Conserve natural beneficial insects • No dangers to workers

  19. Problems with P. persimilis predators • Spider mites increase before control • Some incompatible pesticides

  20. There are other pest insects and mites

  21. Aphids

  22. Other mites

  23. Thrips

  24. Sap beetles (Nitidulidae)

  25. Caterpillars

  26. Questions?