Rose (Rosa rubiginosa)
Powdery Mildew (Podosphaera pannosa)
Symptoms
- Leaves, buds and stems get covered with a white powdery coating.
- The infection can cause young leaves to curl and turn purple.
- Young canes may be distorted and dwarfed. If seriously infected, they can die.
- Severely infected buds fail to open.
Management
- Spray plants with dinocap (Karathene (0.05%), penconazole (0.05%), propiconazole (0.05 %) or fenarimol (0.1%)) at fortnightly intervals.
- Use disease resistant varieties.
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 | Wettable sulphur 80 WP | Dhanusul 80 WP, Dhanusulf, Ganesulf, Insulf, Microsul, Sulfex, Sulfix 80 WP, Sulfex80, Tagsulf, Thiovit, Wettasul | Green | 2 g/ litre of water | 20 g | 400 g | 1000 g | |
| 2 | Dinocap 48 EC | Arathane, Karathane | Blue | 2 ml/ litre of water | 20 ml | 400 ml | 1000 ml | |
| 3 | 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 | |
| 4 | 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 | |
| 5 | Penconazole 10 EC | Topas | Blue | 0.5 ml/litre of water | 5 ml | 100 ml | 250 ml | |
Extremely Toxic
Highly Toxic
Moderately Toxic
