Insect Pests of Tomato and Cole Crops

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],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?

Insect Pests of Tomato and Cole Crops

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Insect Pests of Tomato and Cole Crops