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Trap crops: A tool for managing insect pests damage

Trap crops: A tool for managing insect pests damage

Trap crops are those crops which are planted along with the main cash crop to protect it from a specific pest or several pests by attracting them for feeding, breeding and survival. These crops are generally planted along the main crop as intercropping, as border or in strips. Insect management practices like insecticide spraying are confined to these crops.

List of some important trap crops

Trap crop

Main crop

Method of planting

Pest controlled

Alfalfa

Cotton

Strip intercrop

Lygus bug

Basil and marigold

Garlic

Border crop

Thrips

Castor plant

Cotton

Border crop

Heliotis sp.

Chervil

Vegetables, ornamentals

Among plants

Slugs

Chinese cabbage, mustard, and radish

Cabbage

Planted in every 15 rows of cabbage

Cabbage webworm, flea hopper, mustard aphid

Beans and other legumes

Corn

Row intercrop

Leafhopper, leaf beetles, stalk borer, fall armyworm

Chick pea

Cotton

Block trap crop at  20 plants/ sq m

Heliotis sp.

Collards

Cabbage

Border crop

Diamondback moth

Corn

Cotton

Row intercrop, planted in  every 20 rows of cotton or every 10-15 m

Heliotis sp. 

Cowpea

Cotton

Row intercrop in every 5 rows of cotton

Heliotis sp. 

Desmodium

Corn, cowpea, millet, sorghum

Row intercrop

Stemborer, striga

Dill and lovage

Tomato

Row intercrop

Tomato hornworm

Green beans

Soybean

Row intercrop

Mexican bean beetle

Horse radish

Potato

Intercrop

Colorado potato beetle

Hot cherry pepper

Bell pepper

Border crop

Pepper maggot

Indian mustard

Cabbage

Strip intercrop in  between cabbage plots

Cabbage head caterpillar

Marigold  (French and African marigold)

Solanaceous, crucifers, legumes, cucurbits

Row/strip intercrop

Nematodes

Medick (Medicago littoralis)

Carrot

Strip intercrop in between carrot plots

Carrot root fly

Napier grass

Corn

Intercrop, border crop

Stemborer

Nasturtium

Cabbage

Row intercrop

Aphids flea beetle, cucumber beetle, squash vine borer

Okra

Cotton

Border crop

Flower cotton weevil

Onion and garlic

Carrot

Border crops or barrier  crops in between plots

Carrot root fly Thrips

Radish

Cabbage family

Row intercrop

Flea beetle, root maggot

Rye

Soybean

Row intercrop

Corn seedling maggot

Sesbania

Soybean

Row intercrop at a distance of 15 m apart

Stink bug

Sickle pod

Soybean

Strip intercrop

Velvet bean caterpillar, green stink bug

Soybean

Corn

Row intercrop

Heliotis sp.  

Sudan grass

Corn

Intercrop, border crop

Stemborer

Sunflower

Cotton

Row intercrop in every  5 rows of cotton

Heliotis sp.  

Tansy

Potato

Intercrop

Colorado potato beetle

Tobacco

Cotton

Row intercrop, planted in every 20 rows of cotton

Heliotis sp.  

Tomato

Cabbage

Intercrop (tomato is planted  2 weeks ahead at the plots' borders)

Diamondback moth

Vetiver grass

Corn

Perimeter crop

Corn stalk borer

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Thanks

Very good examples sir !

Please note that this is the opinion of the author and is Not Certified by ICAR or any of its authorised agents.