Insect pests of keezhanelli
Crop: Keezhanelli, S.N: Phyllanthus niruri,
Family: Euphorbiaceae
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Major pests of Keezhanelli
1. Aphid, Macrosiphum euphorbiae
Symptom of damage
- Nymphs and adults suck the sap from leaves
- Weakening and early wilting of the plant
- Infested leaves show leaf chlorosis, withering and premature dropping of leaves
- Finally death of the plant.
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Identification of the pest
M. rosaeformis
- Elongated pear shaped body with large red eyes, black cornicles and pinkish in colour
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| Adult - Aphids |
Management
- Collection and destruction of infested plant parts
- Spray NSKE 5% (or) neem oil 3%
- Apply methyl parathion in the field to arrest ant activity
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2. Whitefly, Bemisia tabaci
Symptom of damage
- Nymphs and adults suck the sap from leaves
- Weakening and early wilting of the plant
- Leaf chlorosis, leaf withering, premature dropping of leaves
- Death of the plant
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Identification of the pest
a - Eggs, b - newly hatched nymph, c - second instar nymphs
White fly leaving from the pupae
Adult
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Management
- Collection and destruction of infested plant parts
- Spray NSKE 5% (or) neem oil 3%
- Apply methyl parathion in the field to arrest ant activity
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3. Thrips, Thrips tabaci
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Symptom of damage
- Nymphs and adults lacerate the leaves
- Leaf curling
- Withering
- Death of the plant
Identification of the pest
- T. tabaci - nymphs and adults are pale yellowish in colour.
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Adult |
Management
- Spray NSKE 5% (or) neem oil 3%
- Place yellow sticky traps at 12/ha
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4. Red spider mite, Tetranychus urticae
Symptom of damage
- White spots developed on the feeding sites
- In severe case, the whole leaf became white and further drying and wilting
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Drying and wilting |
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Identification of the pest
- Nymphs and adults are red in colour.
- Eggs are laid on the ventral surface of the leaves and are whitish, spherical in shape
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Adult |
Management
- Spray dicofol 3 ml (or) wettable sulphur 2g/lit.
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Source
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