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Chilli Leaf Curl Virus
Chilli Diseases
Leaf Curl Virus
Symptoms
- Leaves curl towards midrib and become deformed.
- Stunted plant growth due to shortened internodes and leaves greatly reduced in size.
- Flower buds abcise before attaining full size and anthers do not contain pollen grains.
- The virus is generally transmitted by whitefly. So control measures of whitefly in this regard would be helpful.
Management
- Control measures are not known for majority of viral diseases.
- Hence, mechanical, cultural methods are mostly recommended.
- The infected plants should be uprooted and burnt or buried to avoid further infection.
- Avoid monoculture of chilli crop.
- Selection of healthy and disease – free seed.
- Suitable insecticidal sprays reduce the incidence of viral diseases, since majority of viral diseases are transmitted by insect vectors.
- Soaking seeds in a solution containing 150 g Trisodium orthriphosphate per litre of water for 30 minutes inhibits seed – borne inoculum.
- Treated seed should be washed with fresh water and dried before sowing.
- Nursery beds should be covered with nylon net or straw to protect the seedlings from viral infection.
- Raise 2-3 rows of maize or sorghum as border crop to restrict the spread of aphid vectors.
- Apply Carbofuran 3G @ 4-5 Kg/acre in the mainfield to control sucking complex and insect vectors selectively.
- If it is not possible spray the crop with systemic insecticides. Dimethoate 2ml of Acephate 1g per litre of water.
- Collect and destroy infected virus plants as soon as they are noticed.
|
Fungicide |
Dosage |
|---|---|
|
Dimethoate 30 EC |
200 ml/acre |
|
Thiamethoxam 25 WG |
200 g/acre |
|
Imidacloprid 17.8 SL |
200 ml/acre |
- Leaves curl towards midrib and become deformed.
- Stunted plant growth due to shortened internodes and leaves greatly reduced in size.
- Flower buds abcise before attaining full size and anthers do not contain pollen grains.
- The virus is generally transmitted by whitefly. So control measures of whitefly in this regard would be helpful.
- Control measures are not known for majority of viral diseases.
- Hence, mechanical, cultural methods are mostly recommended.
- The infected plants should be uprooted and burnt or buried to avoid further infection.
- Avoid monoculture of chilli crop.
- Selection of healthy and disease – free seed.
- Suitable insecticidal sprays reduce the incidence of viral diseases, since majority of viral diseases are transmitted by insect vectors.
- Soaking seeds in a solution containing 150 g Trisodium orthriphosphate per litre of water for 30 minutes inhibits seed – borne inoculum.
- Treated seed should be washed with fresh water and dried before sowing.
- Nursery beds should be covered with nylon net or straw to protect the seedlings from viral infection.
- Raise 2-3 rows of maize or sorghum as border crop to restrict the spread of aphid vectors.
- Apply Carbofuran 3G @ 4-5 Kg/acre in the mainfield to control sucking complex and insect vectors selectively.
- If it is not possible spray the crop with systemic insecticides. Dimethoate 2ml of Acephate 1g per litre of water.
- Collect and destroy infected virus plants as soon as they are noticed.
|
Fungicide |
Dosage |
|---|---|
|
Dimethoate 30 EC |
200 ml/acre |
|
Thiamethoxam 25 WG |
200 g/acre |
|
Imidacloprid 17.8 SL |
200 ml/acre |
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