Alternaria leaf blight is a group of fungal diseases that infect a wide variety of plants, including vegetables, fruits, ornamentals, and trees. It is caused by several species of Alternaria fungi, which produce spores that can spread easily through the air and rain.
Environmental favorable factors for pests/Diseases:
- Temperature: Alternaria fungi thrive in warm temperatures, typically between 25°C to 30°C.
- Moisture: Moisture is essential for spore germination and infection. Alternaria leaf blight is more prevalent during periods of high humidity or frequent rainfall, with extended periods of leaf wetness (around 12 hours) being particularly favorable.
- Small, brown spots on leaves that grow larger and darker over time
- Concentric rings around the spots, giving them a target-like appearance
- Yellowing of leaves around the spots
- Wilting and death of leaves in severe cases
| Products | Technical Name | Dosage |
| COC50 | Copper oxychloride 50 % wp | 2gm/ltr |
| Samartha | Carbendazim 12 % + Mancozeb 63 % WP | 300-400 grams per acre |
| AZOZOLE | Azoxystrobin 18.2 % + difenoconazole 11.4 % SC | 150-200 ml per Acre |
| META MANCO | Metalaxyl 8 % + Mancozeb 64 % wp | 1.5 to 2 kg per ha |
