Jassids are small, jumping insects that feed on the sap of plants. They are significant agricultural pests, causing damage through direct feeding and by transmitting plant diseases.
Jassid Life Cycle
- Egg Stage: Eggs are laid inside plant tissues, typically along the veins of leaves.
- Nymph Stage: Immature, wingless stages resembling small adults. They molt several times before maturing.
- Adult Stage: Fully developed, winged insects capable of jumping and flying. Adults are highly mobile and often the most damaging stage.
The complete life cycle duration of jassids generally ranges from 2 to 4 weeks, depending on environmental conditions and species.
Damage Symptoms
- Yellowing: Leaves exhibit chlorosis along the margins.
- Curling: Leaves curl upward.
- Stunted Growth: Plants become stunted due to nutrient loss.
- Hopper Burn: Severe infestations cause the leaves to dry out and die.
Target Crops of Jassids
Jassids target crops like cotton, okra, brinjal, cucumber, tomato, and soybean. They damage plants by feeding on sap and spreading diseases, leading to stunted growth and reduced yields.
Chemical Control (Insecticides)
Here are some effective insecticides for controlling jassids across different crops:
Product Name |
Chemicals |
Dosage |
100gm/acre |
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60 gm/acre |
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300 - 350ml/acre |
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80 - 100ml/acre |
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250-300ml/acre |
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300ml per acre |
Integrated Pest Management (IPM)
Cultural Methods:
- Use resistant crop varieties.
- Practice crop rotation.
- Ensure proper spacing for good air circulation.
Biological Control:
- Use entomopathogenic fungi such as katyayani Bhasam ( Beauveria bassiana ) - 750ml/ acre
Mechanical Control:
- Install yellow sticky traps to monitor and reduce jassid populations.
FAQs
Q. What is the best time to apply insecticides against jassids?
A. The best time to apply insecticides is during the early nymphal stages, as jassids are most vulnerable then. Regular monitoring is key to identifying population build-up early.
Q. Can jassids transmit diseases?
A. Yes, jassids are vectors for viral and bacterial plant diseases, including the transmission of Moko and Tobacco Mosaic Virus.
Q. How can I monitor jassid populations?
A. Jassid populations can be monitored using yellow sticky traps or by visually inspecting the undersides of leaves for nymphs and adults.
Q. Are there any natural enemies of jassids?
A. Yes, predators like lady beetles, spiders, and parasitic wasps naturally help control jassid populations.
Q. How can I reduce pesticide resistance in jassids?
A. To reduce pesticide resistance:
- Rotate insecticides with different modes of action.
- Combine chemical control with cultural and biological methods.
- Avoid overusing a single pesticide.
Written by :- Amit kumar, Agristudent