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Insect Pests of Tomato and Cole Crops

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Ayanava Majumdar (Dr. A), Alabama Cooperative Extension System
Ayanava Majumdar (Dr. A), Alabama Cooperative Extension System
EducationTechnology
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Diagnosis of Pest Problem How to scout and what to look for? Dr. Ayanava Majumdar Extension Entomologist Alabama Cooperative Extension System Gulf Coast Research & Extension Center 8300 State Hwy 104, Fairhope, Alabama 36532 Cell phone: 251-331-8416 PART 2
Types of Plant Problems ,[object Object],[object Object],[object Object],Abiotic stressors Biotic stressors ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],Steps to diagnosis of plant injury
[object Object],[object Object],[object Object],[object Object],[object Object],Steps to diagnosis of plant injury
[object Object],[object Object],[object Object],[object Object],[object Object],Steps to diagnosis of plant injury
[object Object],[object Object],[object Object],[object Object],Steps to diagnosis of plant injury
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Steps to diagnosis of plant injury
TOMATO INSECT PESTS (using identification skills acquired from Part 1)
[object Object],[object Object],[object Object],[object Object],[object Object],Tomato aphid ,[object Object],[object Object],[object Object],[object Object],[object Object],Cornicles
Scouting for aphids Cornicles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Flea beetles Strong thick hind-legs (arrow) Various colors (commonly black/striped) Jump when disturbed Generally early season seedling pest
Scouting for flea beetles ,[object Object],[object Object],[object Object],[object Object],[object Object]
Colorado potato beetle Has many host plants, major pest of tomato Has insecticide resistance (e.g., to Sevin in some areas) Has high fecundity – so NE don’t work Rotate chemicals, use alternative strategies
Scouting for CPB ,[object Object],[object Object],[object Object],[object Object],[object Object]
Tomato fruitworm Has many host plants, major pest of tomato Has a brown head capsule + longitudinal stripes Feeds with part of it’s body outside the fruit Overwinters as pupa in the top soil
Scouting for tomato fruitworm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Stink bugs Has many host plants Major pest of tomato and cotton Piercing-sucking mouthparts Early attack can destroy blooms and late attack destroy fruits
Scouting for stink bugs ,[object Object],[object Object],[object Object],[object Object],[object Object]
Leaf-footed bugs ,[object Object],[object Object],[object Object],[object Object]
Tomato hornworm Caterpillar with Cotesia (parasite) cocoons ,[object Object],[object Object],[object Object],Sphinx /Hummingbird moth
Scouting for tomato hornworm Leave these caterpillars alone! ,[object Object],[object Object],[object Object],[object Object]
INSECT PESTS of COLE CROPS (using identification skills acquired from Part 1)
Crucifer family of crops (list) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Cabbage looper vs. Imported cabbageworm Cabbage looper (CL) Imported cabbageworm (ICW) Note: no. of abdominal prolegs, larval shape, moth vs. butterfly
Damage by CL vs. ICW Cabbage looper Imported cabbageworm ,[object Object],[object Object],[object Object],[object Object],[object Object]
Diamondback moth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Scouting for caterpillar pests Cabbage looper Imported cabbageworm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Diamondback moth ,[object Object],[object Object],[object Object],[object Object]
Cross-striped cabbageworm ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Beet armyworm Damage to pepper plant
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Cutworms
[object Object],[object Object],[object Object],[object Object],[object Object],Scouting for armyworm & cutworm Armyworm Cutworm
Cabbage aphid ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Scouting for cabbage aphid ,[object Object],[object Object],[object Object],Lacewing Ladybeetle Aphidus sp. - parasitoid
[object Object],[object Object],[object Object],[object Object],[object Object],Flea beetles Shot-holes in turnip leaves
[object Object],[object Object],[object Object],[object Object],[object Object],Scouting for flea beetles
[object Object],[object Object],[object Object],[object Object],Cabbage maggot vs. Seedcorn maggot ,[object Object],[object Object],[object Object],Maggots are damaging!
Scouting for maggots ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Back to basics… ,[object Object],[object Object],[object Object],[object Object],[object Object]
Diagnosis of Pest Problem QUESTIONS?

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Insect Pests of Tomato and Cole Crops

  • 1. Diagnosis of Pest Problem How to scout and what to look for? Dr. Ayanava Majumdar Extension Entomologist Alabama Cooperative Extension System Gulf Coast Research & Extension Center 8300 State Hwy 104, Fairhope, Alabama 36532 Cell phone: 251-331-8416 PART 2
  • 2.
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  • 8. TOMATO INSECT PESTS (using identification skills acquired from Part 1)
  • 9.
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  • 11. Flea beetles Strong thick hind-legs (arrow) Various colors (commonly black/striped) Jump when disturbed Generally early season seedling pest
  • 12.
  • 13. Colorado potato beetle Has many host plants, major pest of tomato Has insecticide resistance (e.g., to Sevin in some areas) Has high fecundity – so NE don’t work Rotate chemicals, use alternative strategies
  • 14.
  • 15. Tomato fruitworm Has many host plants, major pest of tomato Has a brown head capsule + longitudinal stripes Feeds with part of it’s body outside the fruit Overwinters as pupa in the top soil
  • 16.
  • 17. Stink bugs Has many host plants Major pest of tomato and cotton Piercing-sucking mouthparts Early attack can destroy blooms and late attack destroy fruits
  • 18.
  • 19.
  • 20.
  • 21.
  • 22. INSECT PESTS of COLE CROPS (using identification skills acquired from Part 1)
  • 23.
  • 24. Cabbage looper vs. Imported cabbageworm Cabbage looper (CL) Imported cabbageworm (ICW) Note: no. of abdominal prolegs, larval shape, moth vs. butterfly
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  • 39. Diagnosis of Pest Problem QUESTIONS?