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Dilip NagarSubhash Saini

Insect Pest Management of VegetablesGrown under Green House conditions

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Insect Pest Management of vegetables grown under green

house conditions

Presenter

Subhash & Dilip

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Vegetable grown under green House

ConditionBrinjal

Tomato

PotatoCucumber

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Brinjal

Cultivated on 510,000 ha.

8,200,000 metric tons.

Mainly cultivated on small family farms.Source of cash income for resource-poor

farmers.

Grown as Kharif and Rabi crop

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Major Pest of Brinjal

Brinjal fruit and shoot borer is the mostdestructive pest.

Losses range from 50-70%.25 to 80 sprays undertaken for effectivecontrol.

Usual control measures are undertaken butare not effective.

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Primary Damage

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F ruit Damage

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Stem borer damage

Larvae enters mainstem and makes tunnelwhich results in eitherstunting or witheringof plants.

(Euzophera perticella)

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B rinjal pests

Larva (Fruit borer)Fruit and Shoot B orer adult Larvae (different instars)

Helicoverpaarmigera

Larva (Fruit borer)

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Tomato

M ajor pests-Tomato fruitworm

Tomato hornwormPotato aphidCutworms --armywormsThripsF lea beetlesWhiteflies

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Flea beetleSymptoms-

A dults chew small circular holes

Can kill small plants

Larvae in soil are not damaging

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CulturalEx clude adults with row coverA ttract adults to alternate trap

crop (Indian mustard)Avoid early plantingChemical

Spray to control adults (carbaryl, synthetic pyrethroids)

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Tomato Fruitworm

Damage-Small larvae feed on leaves

Larger bore into fruit

Develop internally

Infested fruit may color early or rot

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Control

Cultural

Plant early: avoidance in time

Discard infested fruit

ChemicalA sana

Proclaim

Danitol

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Tomato hornworm

Damage-Larvae consume lots of foliageOccasional fruit feeding

Control-C ultural:Remove larvae and squash

B iological:Usually very effective

Both predators (eggs) and parasites (larvae)C hemical:

A void use if possibleBacillus thuringiens is effective

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Potato

Major pestsBlister beetlesA phids

White grubs

Potato Psyllid

Potato leafhopper

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Blister beetles

Symptomsresponsible for the e x tensive foliar damage

ControlCrop rotation is the major non-chemical control methodbecause it reduces and delays infestations in the spring

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Leafhoppers

Symptoms-yellowing of leaf margins, sometimes leading to necrotic areaswith a down-turning of leaf.

Severe potato leafhopper feeding can significantly reduceyield.

Control-

Gaucho (Gustafson) and Cruiser (Syngenta Corp.), known as"neonicotinoids"

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Potato Psyllid

Symptoms-Older leaves become unusually thick

roll upward and turn yellow.

Internodes become shortened.A ffected plants produce aerial tubers and e xcessive numbersof small, distorted tubers

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Cucumber

M ajor pest-Cucumber beetles-

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Symptoms-Direct feeding by larvae can injure crop roots and disruptplant growth.

Direct feeding by adults can stunt seedlings and damagematuring fruits.

Cucumber beetles transmit bacterial wilt, which causes plantsto quickly wilt and die.

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Control

Cultural-Delayed plantingF loating row covers

Mulching

Chemical-Mix ture of neem with karanja oil derived from the

tree Pongamia glabra, which grows in India, can reducecucumber beetle populations by 50 to 70 percent

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