STEM GIRDLER
Sthenias grisator
| Symptoms of damage |
- Wilting of branches and then the entire vine.
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| Cane girdler injury |
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| Identification of pest |
- Grub - Head is dark brown colour, pair of strong mandibles.
- Adult – Medium sized, grey coloured with a white spot in the center of each elytra.
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| Adult |
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| Management |
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Remove loose bark at the time of pruning to prevent egg laying
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Collect and destroy damaged plant parts
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Swab trunk with carbaryl 50 WP 2g/ lit
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Spray application of anf following insecticides
- phosalone 35 EC 0.07%
- quinalphos 25 EC 0.05%
- carbaryl 50 WP 0.1%, first round immediately after pruning and repeat it 2-3 times
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Grape vein beetle, Sinoxylon anale
| Symptoms of damage |
- Wilting of branches and then the entire vine
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| Identification of pest |
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Adult - dark-brown colour with 3 bladed antennae
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pair of spines on the posterior end of the elytra.
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Grub - fleshly, thick yellowish and white with curved body.
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LEAF FEEDERS
Flea beetle, Scelodonta strigicollis
| Symptoms of damage |
- Caused two type of damages
- Larvae and adults feed on the upper and lower leaf surfaces – leaf injury
- Adult feed on swollen grape buds
- Chew holes in the sides of the newly developing grape buds
- Small holes on tender leaves by adult
- Root damage by grub
|
 |
| Shot holes |
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| Identification of pest |
- Adult - Reddish brown, shiny with six spots on elytra
- Grub – brown in colour and black colour head
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| Larva |
Adult |
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| Management |
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Remove the loose bark at the time of pruning to prevent egg laying
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Shake vines to dislodge adult beetles
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Collect into trays containing kerosenated water and destroy them
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Insecticide: phosalone 35 EC 0.07% after pruning
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Leaf roller, Sylepta lunalis
| Symptoms of damage |
- Caterpillar - rolling of leaves.
- Scrabbing the chlorophyll content inside the leaf roll
- Skeletonization of leaves
|
 |
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| Skeletonization |
Scrabbing of leaves |
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| Identification of pest |
- Larva - Pale green with short hairs.
- Adult - Brownish moth with wavy line.
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Sphingid, Hippotion celerio
| Identification of pest |
- Larva - Stout and green with an anal horn.
- Adult - Robust, red and brown coloured moth.
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SAP FEEDERS
Thrips
| Symptoms of damage |
- Presence of silvery white scorchy patches on the leaves.
- Veins without fruits
- Premature fruit drop
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| Identification of pest |
- Nymphs - yellowish brown colour and red colour abdomen
- Adult - black brownish abdomen and yellowish wings
|
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| Adult |
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| Management |
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Collect and destroy damaged leaves, fruits and flowers
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Insecticides: methyl demeton 25 EC 0.05% or dimethoate 30 EC 0.06%
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Mealy bug Ferrisia virgata
| Identification of pest |
- Nymph - Yellowish to pale white.
- Adult - long, slender covered with white waxy secretions
|
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| Adult |
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| Management |
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Debark vines and branches and apply methyl parathion paste
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Collect damaged bark, leaves, twigs and stems
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Use sticky traps on fruit – bearing shoots at a length of 5 cm
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Use dichlorvos 76 WSC 0.15% in combination with fish oil rosin soap (25g//)
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Soil application of aldicarb 10 G/ vine around the base at time of pruning
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Insecticides
- dimethoate 30 EC plus kerosene oil at 150 ml plus 250 ml in 100 ml of water
- Apply quinalphos or methyl parathion dust in the soil at 25 kg/ ha to kill ants
- Release exotic predator, Cryptolaemus montrouzieri @ 10 beetles/vine
- Field release of parasitoids - Anagrus dactylopii, Gyanusoidea mirzai
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Mealy bug, Maconellicoccus hirsutus
| Symptoms of damage |
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Nymphs and adults suck the sap from leaves, shoots and fruits
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Honey dew – development of sooty mould on leaves, shoots and branches
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Crinkling and yellowing of leaves
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| Identification of pest |
- Nymph - pinkish in colour.
- Adult – pink colour and covered with white wax
|
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| Pink mealy bug |
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| Management |
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Apply quinalphos or methyl parathion dust in the soil @ 20 kg/ha to kill the ants.
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Spray methyl demeton 25 EC or monocrotophos 36 WSC at the rate of 2 ml/lit of water
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Spray dichlorvos 76 WSC at the rate of 1 ml/lit with fish oil rosin soap at 25 g/lit.
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Release Coccinellid beetle, Cryptolaemus montrouzieri at the rate of 10 per vine.
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Berry plume moth, Oxyptilus regulus
| Symptoms of damage |
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Early instar larvae web the flower buds
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Matured larvae attack bunch of fruit
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Caterpillar bore into green berry fruit and tunneling
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Feeds on internal content
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Affected berries – known as “stung berries”
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| Larva attack grape bunch |
Affected berries (stung berries) |
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| Identification of pest |
- Larva - Small, pale green or pink with median red line.
- Adult - Small moth.
|
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| Adult |
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| Management |
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Collect and destroy the infested leaves and buried with soil
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Summer ploughing – kill the pupae
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Use pheromone trap to attract male and kill the adult
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Spot application of bubrofezin and acetemprid for effective manage this pest
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