Maize (Zea mays)
Downy Mildew (Peronosclerospora sorghi)
Symptoms
- The disease is characterized by yellowish streaks on the leaves.
- Infected plant become chlorotic with white-striped leaves and sometime stunted plant growth with abnormal seed set.
- The chlorotic area of leaf always includes the base of the blade, and transverse margins usually sharply defined between the diseased and healthy tissues.
- Tassels of diseased plant may exhibit phyllody and green ear symptoms.
Management
- Rogue out the affected plants.
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Knapsack Sprayer (Capacity 10L) | Dosage/acre (200 L) | Dosage/hectare (500 L) | Remarks |
|---|---|---|---|---|---|---|---|---|
| 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/ litre of water | 30 g | 0.6 kg | 1.5 kg | Spray at 20 days after sowing at fortnightly interval. |
| 2 | Potassium phosphonate 40 SC | Akomin | Green | 4 ml /1 litre of water | 40 ml | 0.8 ml | 2 ml | Spray at 20 days after sowing at fortnightly interval. |
Extremely Toxic
Highly Toxic
Moderately Toxic
