Greater Yam (Dioscorea alata)
Anthracnose (Glomerella cingulata, Colletotrichum gloesporioides)
Symptoms
- Dark sunken spots observed on leaves, stems, and other parts of the plant.
- The first signs usually appear as small brown spots with a yellow halo at the tips of lower leaves.
- These spots grow larger and turn black, causing affected leaves to wither.
- Stems can also be infected, either at the top or near the base.
- This disease tends to be more severe during the rainy season.
Management
- Remove and destroy infected crop debris.
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 | Mancozeb 75 WP | Devidayal M-45, Dhanuka M-45 Dithane , Dithane M-45 , Hilthane Hindustan M-45 , Indofil M-45, Izeb M-45 , Manzate , Luzen 45 ,Macoban M-45, Mancosaan, Mancosaan M-45, Manzeb 75 WP, Maneb Manzane, M-Guard , Savour M-45 , Tata M-45, Eurofil -NT , Uthane M-45 ,Veera, Zinthane | Green | 3 g | 30 g | 600 g | 1500 g | |
Extremely Toxic
Highly Toxic
Moderately Toxic
