Bitter gourd (Momordica charantia)
Fusarium wilt (Collectotrichum sp)
Symptoms
- Initial symptoms appear as yellowing and marginal necrosis of leaves from down to upwards.
- Leave lose turgidity and then sudden drooping and wilting of plants.
- The roots are usually not affected.
- The vascular bundles in the collar region and entire stem become yellow or brown.
Management
- Remove and destroy all infected plants along with roots.
- Follow crop rotation with non-cucurbitaceous crops.
- Soil solarization for 40-45 days during summer months.
- Apply soil amendments like neem cake (250 g/m2).
- Application of non-pathogenic isolates of Fusarium or Pseudomonas putida as bioagents also help in the management of this disease.
- Prophylatic soil drench with Pseudomonas fluorescens or Trichoderma spp. (20 g/litre of water).
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 | Carbendazim 50 WP | Bavistin, Benfil, Bengard, Benlate, Benmain, Bensaan, Carben, Carziim50, Dhanustin, Dhanustin 50 WP, Fungiguard, Gancarzin50, Glizim, Mintho, Tagstin, Tiara, Zoom | Green | 2 gram/litre of water | 20 g | 400 g | 1000 g | Soil drench with chemical immediately on appearance of initial symptoms |
| 2 | Hexaconazole 5 EC | Alert Creeper, Contaf, Corazole, Danzole, Force 5C, Hexaan, Hexacone, Hexadhan, Hexamax, Hexan, Hexazole, Mainex EC, Sitara, Strike, Titan, Topper, Topper plus EC, Xantho | Blue | 1 ml/litre of water | 10 ml | 200 ml | 500 ml | Soil drench with chemical immediately on appearance of initial symptoms |
| 3 | Propiconazole 25 EC | Bumper, Dhan, Pinade, Propiguard, Propik Final, Radar, Result, Tilt, Tilt Albu, Zetox | Blue | 1 ml/litre of water | 10 ml | 200 ml | 500 ml | Soil drench with chemical immediately on appearance of initial symptoms |
Extremely Toxic
Highly Toxic
Moderately Toxic
