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Paddy Yellow Dwarf
Paddy Diseases
Yellow Dwarf
Symptoms
- The infected plants are stunted and have yellowish green to whitish green leaves.
- There is excessive tillering and leaves became soft and droop slightly.
- Root growth is also reduced significantly.
- Chlorosis occurs on the leaves occasionally even spreading to the leaf sheaths.
- Streaks may also form parallel to the leaf veins.
- If plants are infected early they usually die before maturity and even if they do survive no panicles are produced or only a small number with no grains.
Management
- Deep ploughing during summer and burning of stubbles.
- Rice varieties like IR62 and IR64 are resistant to the disease.
- The management practices followed for Rice Tungro Disease(RTD) may be adopted for this disease also.
- Avoiding early planted rice will prevent an increase in vector density and proportion of virus acquired vectors.
- Planting fallow rice fields with non vector hosts, ploughing fallow paddy fields and late-planting,
synchronous planting or avoiding an overlap of early and late planted rice crops. - Remove weed hosts periodically. .
- Crop rotation .
- The vegetation on the bunds should also be sprayed with the insecticides.
- Chemical Method: Vector control with any one of the following insecticides .
|
Fungicide |
Dosage |
|---|---|
|
250g/acre |
|
|
200ml/acre |
- The infected plants are stunted and have yellowish green to whitish green leaves.
- There is excessive tillering and leaves became soft and droop slightly.
- Root growth is also reduced significantly.
- Chlorosis occurs on the leaves occasionally even spreading to the leaf sheaths.
- Streaks may also form parallel to the leaf veins.
- If plants are infected early they usually die before maturity and even if they do survive no panicles are produced or only a small number with no grains.
- Deep ploughing during summer and burning of stubbles.
- Rice varieties like IR62 and IR64 are resistant to the disease.
- The management practices followed for Rice Tungro Disease(RTD) may be adopted for this disease also.
- Avoiding early planted rice will prevent an increase in vector density and proportion of virus acquired vectors.
- Planting fallow rice fields with non vector hosts, ploughing fallow paddy fields and late-planting,
synchronous planting or avoiding an overlap of early and late planted rice crops. - Remove weed hosts periodically. .
- Crop rotation .
- The vegetation on the bunds should also be sprayed with the insecticides.
- Chemical Method: Vector control with any one of the following insecticides .
|
Fungicide |
Dosage |
|---|---|
|
250g/acre |
|
|
200ml/acre |
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