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TNAU Agritech Portal :: Castor

1. Serpentine leaf miner: Liriomyza trifolii

Leaf mining damage
Leaf miner - Adult

 

Symptoms of damage

  • Drying and dropping of leaves

Identification of the pest

  • Larva - minute, orange yellowish in colour and apodous
  • Adult - pale yellow colour fly

Management

  • Spray neem seed kernal extract (NSKE) 5% or triazophos @ 2.5ml/litre of water.

2. Castor Semilooper:  Achaea janata,  Paralellia algira

Damage

Symptoms of damage

  • Damage to complete defoliation.
  • leave bare stems & veins

A) Identification of the pest - Achoea janata

  • Larva- semilooper with varying shades of colour with black head.
  • Abdomen – has a red spot on the third abdominal segment and red tubercules in the anal region
  • Adult - pale reddish brown moth with hind wing having white spot in the middle and three large white spots on the outer margin

B) Identification of the pest - Paralellia algira

  • Larva- semilooper, olive grey colour  with numerous longitudinal lines

Adult

  • Fore wing - white in colour with suffused band beyond it.
  • Hind wing: - has white median band, the outer margin grey at centre.
Management

Spray any one of the following insecticides thrice from flowering at three weeks interval :

  • Malathion 50 EC 2.0 l / ha
  • Carbaryl 50 WP 2.0 kg / ha in 1000 l of water
  • Apply neem seed kernel extract 5% + Neem oil 2%

 3. Castor Slug: Parasa lepida

Symptoms of damage

  • Feed gregariously on the leaves of castor and later spread over to the entire plant.
  • Cause defoliation – leaving only the midrib and veins

Identification of the pest

  • Larva- slug like, ventrally flat, greenish body with white lines and four rows of spiny  scoli tipped red or black
  • Adult: - green moth with brown band at the base of the forewin

 

Management
  • The pest should be kept in check by picking the gregarious caterpillars and the cocoons which are found on tree trunks and destroying them in water with a film of kerosene.
  • Spray chlorpyriphos or Quinalphos @ 2 ml per litre of water if pest attack is more.

4. Tussock caterpillar: Orgyia (=Notolophus ) postica

Symptoms of damage

  • Cause – defoliation

Management

  • To control early stage larvae, spray neem seed kernel extract (NSKE) 5% or spray chlorpyriphos 2.5ml or monocrotophos or quinolphos 2ml or neem oil 5ml per litre of

Identification of the pest

Larva
  • Head –brown in colour. Prothorax with a pair of long pencils of hairs pointing forward
  • Abdomen – laterally - first two segments have tufts of yellowish hair.
  • Long brown hairs from the 8th segment onwards

Adult

  • Male moth with brown coloured with stout abdomen. Female apterous water.

5. Hairy caterpillars: Euproctis fraterna,

Symptoms of damage

  • Cause - defoliation

A) Identification of the pest - Euproctis fraterna

  • Larva - Reddish brown hairy caterpillar
  • Head – red in colour surrounded by white hairs
  • Abdomen – has tufts of hairs all over the body and a long pre anal tuft.
  • Adult - yellow moth with pale transverse lines and black spots on the forewing.
B) Identification of the pest - Porthesia scintillans 
  • Larva: - Yellow coloured hairy caterpillar
  • Head – brown in colour 
  • Abdomen- has yellow stripes with a central red line on the body
  • Adult - yellowish with spots on the edges of the forewing.

C) Identification of the pest - Dasychira mendosa

  • Larva: Greyish brown with dark prothoracic and pre-anal tufts,
  • Prolegs crimson coloured

Management

  • To control early stage larvae, spray neem seed kernel extract (NSKE) 5% or spray chlorpyriphos 2.5ml or monocrotophos 2ml or quinolphos 2ml or neem oil 5ml per litre of water.

6. Woolly bear: Pericallia ricini 

Symptoms of damage

  • Cause - defoliation

Identification of the pest

  • Larva- black with brown head having long brown hairs. 
  • Adult: grey coloured moth. Hind wings are pinkish with dark spots

Management

  • To control early stage larvae, spray neem seed kernel extract (NSKE) 5% or spray chlorpyriphos 2.5ml or monocrotophos 2ml or quinolphos 2ml or neem oil 5ml per litre of water.

7. Castor spiny caterpillar: Ergolis merione

Symptoms of damage
  • Cause - defoliation
Identification of the pest
  • Larva- green coloured, spiny caterpillar with yellow stripe on the dorsal region
  • Adult: Brown butterfly with black wavy lines on the wings

Management

  • To control early stage larvae, spray neem seed kernel extract (NSKE) 5% or spray chlorpyriphos 2.5ml or monocrotophos 2ml or quinolphos 2ml or neem oil 5ml per litre of water.

8. Red hairy caterpillar: Amsacta albistriga, A. mooreii

Symptoms of damage
  • These hairy caterpillars scrap the under surface of the leaf when they are in neonate stage.
  • Later the scrapped patches of the leaves looks like thin papery
  • Full grown larvae devour the entire foliage, flowers and growing points.

Identification of the pest

  • Larvae- hairy caterpillar reddish brown with black band on either end having long reddish brown hairs all over the body.
  • Adult: - moth with white wings

Amsacta albistriga

  • Forewing - white with brownish streak all over and yellowish  streak along the anterior margin and head
  • Hind wing – white with black markings

Amsacta moorei

  • Forewing - white with brownish streak all over and reddish streak along the anterior margin and hea

Management

  • Collection and destruction of egg masses and hand picking of larvae
  • The barnyard millet (Echinochloea frumentacea.) may act as strong barrier
  • Summer ploughing and poison baiting.
  • Erection of light traps soon after the monsoon for 20-45 days and collecting and killing of adult moths are found to be very effective.
  • The dispersing larvae of hairy caterpillar from one field to another can be checked by digging trenches across the direction of their march, and prompt destruction of larvae.
  • Vegetative traps utilizing Jatropha (wild castor) or Ipomea prevent the migration of the grown up larvae.
  • Prepare small balls with10 kg rice bran + 1 kg jaggery +1 liter quinolphos broad-cost in the fields preferably in the evening times.
  • Dusting of carbaryl or quinolphos @ 25-30 kg/ha would be effective in the control of young larvae.
  • Use of 200 ml dichlorovos 100 EC dissolved in 400 litres of water/ha may be used to control grown up caterpillars. or
  • Spray QuinalPhos or dimethoate 2ml or monocrotophos 2 ml /lit of water.

9. Tobacco caterpillar: Spodoptera litura

Symptoms of damage

  • The early instar larvae feed gregariously on the under surface of the leaf leading to skeletonization of the leaves.
  • Sometimes the feeding is so heavy that only petioles and branches are left behind.
  • In case of severe attack cause complete defoliation.

Identification of the pest

  • Egg - Egg masses appear golden brown
  • Larva  - Pale greenish with dark markings. Gregarious in the early stages
  • Adult - Forewings – brown colour with wavy white markings. Hind wings- white colour with a brown patch along the margin

Management

  • Collect and destroy the egg masses and caterpillars in the early stages of infestation.
  • Plough the field so as to expose the pupae to predators and parasitoids
  • Monitoring the pest with pheromone traps (4-5/acre) helps in timely treatment.
  • To control early stage larvae, spray neem seed kernel extract (NSKE) 5% or chlorpyriphos 2.5ml or monocrotophos 2ml or quinolphos 2ml or neem oil 5ml per litre of water.
  • As the grown up larvae move down to soil to hide during day time, poison bait (1 litre of monocrotophos or 1kg carbaryl + 10kg of rice bran + 1 kg jaggery + 1 litre of water to make the bait in to pellets for one hectare) placement at base of the plants helps in killing the larvae.

10. Bihar Hairy Caterpillar: Spilosoma obliqua

Symptoms of damage

  • Young larvae feed gregariously mostly on the under surface of the leaves.
  • A caterpillar of later stages defoliates the field completely.

Identification of the pest

  • Eggs -are laid in clusters of 50-100, on the lower side of leaves.
  • Larvae - orange coloured with broad transverse band with tufts of yellow hairs that are dark at both ends
  • Pupa- forms a thin silken cocoon by interwoven shed hairs of the larvae.
  • Adult - crimson coloured moth with black dots and a red abdomen. Wings – pinkish with numerous black spots

Management

  • Collection and destruction of eggs and early stage larvae
  • Spray NSKE 5% to kill early stage larvae.
  • If grownup larvae are seen, spray quinalphos, monocrotophos, or chlorpyriphos @ 2ml/litre of water

11. Capsule Borer: Conogethes (=Dichocrosis) punctiferalis

Symptoms of damage
  • Capsule with bore holes.
  • Damaged capsules webbed together
  • Peduncle and capsules showing galleries made of silk and frass.

Identification of the pest

  • Larva: - pale greenish with pinkish tinge and fine hairs with dark head and prothoracic shield
  • Adult – yellowish with black spot

Management

Spray any one of the following insecticides, thrice from flowering at three weeks interval :

  • Malathion 50 EC 2.0 l /ha
  • Carbaryl 50 WP 2.0 kg / ha in 1000 l of water

12.Jassids: Empoasca flavescens

     

Symptoms of damage

  • Leaf margins become yellow
  • Curling of leaf edges and leaves turn red or brown.
  • Leaves dry up and shed.

Identification of the pest

  • Nymph: green coloured
  • Adult: green wedge shaped insect
Management
  • Seed treatment with imidacloprid or carbosulfan or stem application with monocrotophos protects the crop from all sucking pests including jassids for about a month.
  • Spray monocrotophos (0.05%) or dimethoate (0.05%). Repeat spray if required after a fortnight

13. White flies: Trialeurodes ricini

Symptoms of damage

  • Water soaked spots on the leaves which become yellow and dry up
  • Leaves appear sickly and get coated with sooty mould.
  • Stunted plant growth, shedding of fruiting bodies

Identification of the pest

  • Nymph  : yellowish

Management

  • Whiteflies can be effectively attracted and controlled by yellow sticky traps, which are coated with grease/sticky oily materials.
  • Spray triazophos (2.5 ml/l) or acephate (2 ml/l).
  • Spraying of any neem product (NO 3% or NSKE 5% ) with any sticky material.
  • Use of synthetic pyrethroids increases the intensity of whitefly.
 

14. Thrips: Retithrips siriacus: Scirtothrips dorsalis

 

Symptoms of damage

  • Terminal leaves silvered
  • The injury results in development of dull yellowish-green patches on the upper leaf surface and brown necrotic areas of the lower surface.
  • Under heavy infestation the leaves curl and plants get stunted.
Identification of the pest
  • Nymph: Pinkish (Retithrips siriacus); yellowish (Scirtothrips dorsalis)
  • Adult: Black with fringed wings

Management

  • Insecticides such as dimethoate, methyl-o-demeton and monocrotophos at the rate of 2.0 ml per litre of water give control of thrips effectively.
  • Monocrotophos (320 ml) + neem oil (1 lit) + soap powder (1 kg) in 200lit of water can be sprayed twice at 10days interval

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