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Paddy Gall Midge
Paddy Pests
Gall Midge
Symptoms
- Maggot feeds at the base of the growing shoot
- Feeding causes formation of a tube like gall that is similar to “onion leaf” or “Silver-shoot”.
- Infested tillers produce no panicles
Identification
- Egg: The fly lays elongate, cylindrical, shinning white or red or pinkish eggs singly or in clusters (2-6) at the base of the leaves.
- Maggot: Maggot is 1 mm long after hatching with pointed anterior end. It creeps down the sheath and enters the growing bud. An oval chamber is formed round the site of feeding.
- Pupa: At the time of emergence the pupa wriggles up the tube with the help of antennal horn to the tip of the silver shoot and projects half way out.
- Adult: Fly is yellowish brown or orange and mosquito like. The male is ash grey in colour. Adults feed on dewdrops.
Management
-
ETL: 10% silver shoots
- Release Platygaster oryzae parasitised galls at 1/10 sq.m on 10 days after transplanting (DAT)
- Harvest the crop and plough immediately
- Remove the alternate hosts and adopt early planting
- Optimum recommendation of potash fertilizer
- Setup infra red light trap and monitor the adult flies
- Spray any following insecticides
|
Insecticides |
Dosage |
|---|---|
|
400ml/acre |
|
|
200g/acre |
|
|
500ml/acre |
- Maggot feeds at the base of the growing shoot
- Feeding causes formation of a tube like gall that is similar to “onion leaf” or “Silver-shoot”.
- Infested tillers produce no panicles
- Egg: The fly lays elongate, cylindrical, shinning white or red or pinkish eggs singly or in clusters (2-6) at the base of the leaves.
- Maggot: Maggot is 1 mm long after hatching with pointed anterior end. It creeps down the sheath and enters the growing bud. An oval chamber is formed round the site of feeding.
- Pupa: At the time of emergence the pupa wriggles up the tube with the help of antennal horn to the tip of the silver shoot and projects half way out.
- Adult: Fly is yellowish brown or orange and mosquito like. The male is ash grey in colour. Adults feed on dewdrops.
-
ETL: 10% silver shoots
- Release Platygaster oryzae parasitised galls at 1/10 sq.m on 10 days after transplanting (DAT)
- Harvest the crop and plough immediately
- Remove the alternate hosts and adopt early planting
- Optimum recommendation of potash fertilizer
- Setup infra red light trap and monitor the adult flies
- Spray any following insecticides
|
Insecticides |
Dosage |
|---|---|
|
400ml/acre |
|
|
200g/acre |
|
|
500ml/acre |
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