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Crop Protection :: Pest of sarpagandha

Insect pests of sarpagandha

Crop: Sarpagandha

S.N: Rauvolfia Serpentina

Family: Apocynaceae

Pests

Important pests of sarpagandha

Cut worm, Agrotis sp Symptoms Identification Management

Sphingid caterpillar, Deilephila nerii Symptoms Identification Management

Epilachna beetle, Henosepilachna vigintioctopunctata Symptoms Identification Management

Ash weevil, Myllocerus viridanus Symptoms Identification Management

Mealy bug, Coccidohystrix insolita Symptoms Identification Management

1. Cut worm, Agrotis sp.
Symptom of damage

Larva attack the tender seedlings
Caterpillars are nocturnal in habit and found under debris around plants.
Cuts seedlings near the ground level and eat the tender parts.
Damage is more in low lying water logged areas.

Identification of the pest

Eggs are globular in shape, ribbed and whitish in color.
Tiny caterpillars feed gregariously on the foliage for a few days and then enter in to the soil.

Larva

Adult

Management

Fork the soil (summer months) – to expose larva and pupa for avian predators
Install light traps (summer) to attract adult moths
Install Pheromone traps at 20/ha to monitor and attract male moths
Irrigate the field in day time to expose larva for predation by birds.
Drench collar region of the plants in evening hours with Chlorpyriphos 2ml/lit.a day after planting

2. Sphingid caterpillar, Deilephila nerii
Symptom of damage

Caterpillar feed on the leaves
Defoliation

		Identification of the pest Larva is stout with a spine in the anal region. Adult is robust green moth with yellow markings.
Larva	Adult

Management

Soil digging to expose the pupae for predation by birds
Handpicking and destruction of caterpillars.
Use light trap 1/ha
Plant neerium around the bunds and take up plant protection on neerium with chemicals

3. Epilachna beetle, Henosepilachna vigintioctopunctata

	Symptom of damage Grubs and adults feed by scrapping chlorophyll from epidermal layers of leaves Skeletnized and gradually dry away.
Egg, Grub,Pupa and Adult

Identification of the pest

Grubs - yellowish in colour, stout with spines all over the body.
Adult - spherical bluish brown and mottled with black spots.

Management

Collect and destroy grubs and adults.
Spray carbaryl 50 WP 3g/lt + wettable sulphur2g/lt.

4. Ash weevil, Myllocerus viridanus

	Symptom of damage Adults feeding on the leaves from the edges in a serrated manner Notching of leaf margins. Grubs feed on roots and cause wilting and drying of plants.
Adult, Ash weevil

338-24med

Identification of the pest

Adult is small light green in colour.

Management

Collection and destruction of adults
Spraying of Carbaryl 0.2% or Malathion 0.1%
Incorporation of soil with dust or drenching of the soil with 0.1% Chlorpyriphos

5. Mealy bug, Coccidohystrix insolita
Symptom of damage

Nymphs and adults present on undersurface of leaves and suck the sap
Affected plants turn yellow, wilt and dry
Honeydew secretion causes sooty mould.

pWolluis[1]

Identification of the pest

Mealy bugs are small, oval, and soft-bodied covered with white mealy wax.

Management

Removal of affected parts in the early stage of attack.
Spray application of dimethoate 0.05 % (or) methyldemeton 25 EC 0.05% (or) malathion 50 EC 0.1%
Field release of coccinellid predators
In the later stage of the crop neem oil 5ml or fish oil rosin soap 25 gm per litre of water can be sprayed

Source

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