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Paddy Sheath Rot
Paddy Diseases
Sheath Rot
Symptoms
- Initial symptoms are noticed only on the upper most leaf sheath enclosing young panicles.
- The flag leaf sheath show oblong or irregular greyish brown spots.
- They enlarge and develop grey centre and brown margins covering major portions of the leaf sheath.
- The young panicles may remain within the sheath or emerge partially. The panicles rot and abundant whitish powdery fungal growth is formed inside the leaf sheath
- Favourable Conditions :
- Closer planting, high doses of nitrogen, high humidity and temperature around 25-30 C.
- Injuries made by leaf folder, brown plant hopper and mites increase infection.
Management
- Spray Carbendazim 100g or mancozeb 500 g /ac at boot leaf stage and 15 days later.
- Soil application of gypsum (200 kg/ac) in two splits.
- Application of NSKE 5% or neem oil 3 % or Ipomoea or prosopis leaf powder extract 10 Kg/ac.
First spray at boot leaf stage and second 15 days later.
|
Fungicide |
Dosage |
|---|---|
|
250g/acre |
|
|
500g/acre |
|
|
250ml/acre |
- Initial symptoms are noticed only on the upper most leaf sheath enclosing young panicles.
- The flag leaf sheath show oblong or irregular greyish brown spots.
- They enlarge and develop grey centre and brown margins covering major portions of the leaf sheath.
- The young panicles may remain within the sheath or emerge partially. The panicles rot and abundant whitish powdery fungal growth is formed inside the leaf sheath
- Favourable Conditions :
- Closer planting, high doses of nitrogen, high humidity and temperature around 25-30 C.
- Injuries made by leaf folder, brown plant hopper and mites increase infection.
- Spray Carbendazim 100g or mancozeb 500 g /ac at boot leaf stage and 15 days later.
- Soil application of gypsum (200 kg/ac) in two splits.
- Application of NSKE 5% or neem oil 3 % or Ipomoea or prosopis leaf powder extract 10 Kg/ac.
First spray at boot leaf stage and second 15 days later.
|
Fungicide |
Dosage |
|---|---|
|
250g/acre |
|
|
500g/acre |
|
|
250ml/acre |
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