Banana (Musa spp.)
Rhizome Weevil (Cosmopolites sordidus)
Symptoms
- Female adult puncture healthy rhizome and insert eggs through it, grubs tunnel into the rhizome an dfeed on it resulting in stunting of rhizome
- Leaves turn yellow, wither and die prematurely.
- Leaves become smaller in size
- Reduction in bunch size
- In the final stage, the spindle leaves wilt. The rhizome rots. Holes and black debris can be seen inside.
Management
- Use planting material free of weevils.
- Deep plough the land to expose the inner soil layer to sun.
- Sucker treatment with Pseudomonas flurescens (20 gram/litre)
- Apply neemcake @ 1 kg/plant at the time of planting.
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Knapsack Sprayer (Capacity 10L) | Recommendation | Remarks | |
|---|---|---|---|---|---|---|---|---|
| Dosage/acre (200 L) | Dosage/hectare (500 L) | |||||||
| 1 | Thiamethoxam 25 WG | ACT 150, Actara, Click, Exaam, Krioxam, Maxima, Renova, Slayer, Suckgan, Tagsulf, Tagxone, Theme, Wonderex | Blue | 0.2 g/litre | 2 g | 40 g | 100 g | Application at planting followed by two applications 2nd and 5th months after planting. |
| 1 | Fipronil 0.3G | Corofip GR, Ferodan GR, Fipro plus GR, GR Agadi, Mahaveer , Regent, SC Fax GR, Stargazette , Tag Agent GR | Yellow | 10g formulation per plant | ||||
Extremely Toxic
Highly Toxic
Moderately Toxic
