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Control of Western Flower Thrips Through Integrated Pest Management Presented by: Dr. Charles Mellinger, Glades Crop

Recognition for Data Collection and Preparation. Galen Frantz, Glades Crop CareLeon Lucas, Glades Crop CareFelicia Parks, Glades Crop CareKim Burman, Glades Crop CareJerry Brust, University of Maryland. 1. Tomato spotted wilt virus (TSWV) info2. Current situation of thrips

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Control of Western Flower Thrips Through Integrated Pest Management Presented by: Dr. Charles Mellinger, Glades Crop

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    1. Control of Western Flower Thrips Through Integrated Pest Management Presented by: Dr. Charles Mellinger, Glades Crop Care, Inc. May 1, 2007

    2. Recognition for Data Collection and Preparation Galen Frantz, Glades Crop Care Leon Lucas, Glades Crop Care Felicia Parks, Glades Crop Care Kim Burman, Glades Crop Care Jerry Brust, University of Maryland

    3. 1. Tomato spotted wilt virus (TSWV) info 2. Current situation of thrips & TSWV? 3. IPM Correct identification required for correct response Economic thresholds with and without TSWV Control measures Resistance management Preventative practices IPM of Western Flower Thrips

    4. 1. Tomato Spotted Wilt Virus Info Why discuss this – vectored by WFT – infected plants produce no yield Over 837 plant species infected/110 plant families Pepper, tomato, peanuts, tobacco Vectored by Western Flower Thrips Tobacco Thrips Melon Thrips Onion Thrips Yellow Flower thrips (F. schultzei)

    6. 2. Current Situation - Thrips & TSWV TSWV - Mostly not clear Positive TSWV Identification in: Tampa area peppers & ornamentals Homestead tomatoes Emilia Georgia Transplants Summary – very little at this point compared to Southeastern U.S.

    7. Emilia with TSWV Symptoms

    8. 2. Current Situation - Thrips in South Florida Historically only Florida flower thrips Recently small pockets of Western flower thrips Homestead & adjacent areas with Thrips palmi Populations changing New large populations of WFT Significant population of other important thrips Summary – thrips are becoming very important in South Florida crops

    14. Dade County Pepper Farms – Thrips Averages

    15. 3. IPM - Correct identification of genus/species required for correct response Economic thresholds are different Chemical control choices are different Rotation and resistance management are different

    16. 3. IPM - Economic Thresholds

    17. 3. IPM – Control Measures FL Flower Thrips Many choices Western Flower Thrips Very few choices Thrips palmi Very few choices

    18. 3. IPM – Resistance Management Rotate chemical classes Follow Label Apply only at or over threshold Therefore need accurate bloom counts

    19. 3. IPM-Preventive Practices Monitoring Pre-planting: weeds and surrounding fallow During crop production During crop and post crop destruct - Impact on adjacent crops and fields Varietal resistance---none in pepper to TSWV Reflective mulch---reduced #’s and incidence Adjacent grower notifications Conservation of Thrips predators—The Minute Pirate Bug—Orius insidiosus

    28. Summary WFT expanding in South Florida WFT excellent vector of TSWV Few WFT controls Must ID thrips population for correct response Must scout for correct response

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