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Vertical Integration in Pepper Pest Management. Charles Mellinger PhD Glades Crop Care, Inc Jupiter, Florida August 29, 2008. IPM and Multiple Pests. My talk today: Managing 2 or more pests on the same plant with conflicting control choices. Pepper example: WFT and pepper weevil - PowerPoint PPT Presentation
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Vertical Integration in Pepper Pest Management
Charles Mellinger PhDGlades Crop Care, IncJupiter, FloridaAugust 29, 2008
IPM and Multiple Pests
My talk today: Managing 2 or more pests on the same plant with conflicting control choices. Pepper example: WFT and pepper weevilPEW controls—Vydate & pyrethroids—eliminate
Orius and explode WFT WFT controls—spinosad/spinetoram, Beleaf, &
Orius
Pesticide Choice Conflict
WFTPEW
How reduce conflict?
Eliminate PEW hosts Introduce Catalaccus parasitoids into
nightshade (NS) Use least-toxic PEW’icides Monitor movement PEW with traps GPS GIS mapping of PEW and NS
Dropped Fruit
Pepper Weevil ManagementSituation:
PEW is the system driver
Controlled by frequent and heavy doses of
carbamates and pyrethroids
Results:
Elevated resistance to oxamyl
No beneficial activity
Not sustainable
Anthonomas eugenii
Nov-10%Jan-25%
Mean Percent Pepper Weevil Fruit Loss Over the Last 4 Years – Not Acceptable!
Nov-8%Jan-20%
Nov-6%Feb-27%
Nov-4%Feb-32%
Dec-5%Mar-24%
Dec-7%Mar-22%
Dec-6%Mar-34%
Dec-8%Mar-37%
Pepper Weevil Management
Insights and Innovation:
Determined alternate host is nightshade
Partial solution: attempt to eliminate
nightshade
New tool -- Catolaccus to parasitize PEW eggs
Program:
Release Catolaccus into nightshade reservoir
for reduced PEW populations
Farm A
>20
01-45-1011-20
Area-wide Pest Management in Action: PEW movement mid season, 2001-2002
Farm C
Farm B
PEW trapcounts
>20
01-45-1011-20
Season-end PEW Movement Impacted by Areas of Nightshade
Pepper Farm A Pepper
Farm B
Pepper Farm C
Weevils/trap Areas of nightshade
Nov-0.5%Jan-2%
Mean Percent Pepper Weevil Fruit Loss in 2002-2003 – Prevention Works!
Nov-1%Jan-2%
Nov-0%Feb-2%
Nov-0%Feb-2%
Dec-1%Mar-2%
Dec-2%Mar-1%
Dec-3%Mar-1%
Dec-2%Mar-0%
Results Summary
2000-2002: High infestations 2003: 45% reduction 2004: 64% reduction 2005: 76% reduction
Final Result: Control of PEW and WFT
Use 3-tiered system to reduce PEW population available for crop
Monitor PEW outside and inside crop Use least toxic insecticides Monitor and identify thrips population
in crop and surrounding vegetation
Thank You!
See www.gladescropcare.com for
more information
Contact me at 561-746-3740
