| Cotton Stem Weevil: Pempheres (Pempherulus) affinis |
Symptoms of damage
- Swellings on the stem just above the ground level
- Young plants are invariably killed
- Older plants that survive lack vigor and strength, breaks at the nodes due to strong wind
|
|
|
|
Stem gall |
Stem galls |
Grub |
|
Identification of the pest
- Larva - Grub, white in colour without leg (apodous)
- Adult - Very small weevil, dark in colour with two small white patches on the elytra
|
Management
-
ETL: 10% infestation
-
Basal application of FYM 25 t/ha and 250 kg/ha of neem cake
-
Seed treatment with chlorpyriphos 20 EC @ 10ml/kg of seed+ Drenching collar region with chlorpyriphos 20 EC @ 2.5ml/ l on 15 and 30 DAS+ earthing up
- Spray any one of the following insecticides
- Carbaryl50 WP 2.5 kg/ha
- Carbofuran 3G 33.3 kg/ha
|
