Snake gourd (Trichosanthes anguina)
Powdery mildew (Sphaerotheca fuliginea; Erysiphe cichoracearum)
Symptoms
- The disease is characterized by a superficial white powdery growth of the fungus on stems and leaves.
- The upper surface of younger and mature leaves is mostly affected.
- Small cottony white spots appear on the infected leaves which gradually spread on the lamina.
- Heavily infected leaves become yellow, and then become dry and brown.
- Infected tissues may be distorted and show crinkling.
- Fruits of the affected plants do not develop fully and remain small.
- The disease is seen mainly in winter months.
Management
- Collect and burn the infected plant debris.
- Maintain proper health of the plant.
- Plant in sites with good air circulation and sun exposure
- Do not overcrowd plants
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 | 1 g/ litre of water | 10 g | 200 g | 500 g | spray |
| 2 | Wettable sulphur 80 WP | Dhanusul 80 WP, Dhanusulf, Ganesulf, Insulf, Microsul, Sulfex, Sulfix 80 WPSulfex80, Tagsulf, Thiovit, Wettasul | Green | 2 g/ litre of water | 20 g | 400 g | 1000 g | - |
| 3 | Dinocap 48 EC | Arathane, Karathane | Blue | 2 ml/ litre of water | 20 ml | 400 ml | 1000 ml | - |
Extremely Toxic
Highly Toxic
Moderately Toxic
