Cashew (Anacardium occidentale)
Damping off (Phytophthora palmivora)
Symptoms
- Damping off is a disease caused by many pathogens that kill or weaken seeds or seedlings before or after they germinate.
- It is more prevalent in wet and cool conditions.
- The fungus attacks the roots and collar region and causes their death.
- Water soaked lesions can be observed at the collar region which turns dark and girdles the stem. The seedlings droop and ultimately die.
- On leaves, water soaked lesions can be observed in severe cases. These lesions enlarge and coalesce, often covering the entire leaf lamina
Management
- Ensure adequate drainage in the seed beds and polythene bags.
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 | Copper oxychloride 50 WP | Bensaan, Blitox, Blue copper, Bluetrox, Copter, Cupramar, Cuprina, Dhanucop, Fytolan, Fytox, Fytran, Fytolan, Hilcopper, Killex copper, Maincop Dhanucop, Star cop, Tagcop, Trucop | Blue | 4 g | 400 g | 1000 g | Drench the beds or bags | |
| 2 | 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 | 600 g | 1500 g | Drench the beds or bags | |
| 3 | Potassium phosphonate 50 SC | Akomin | Green | 4 ml | 800 ml | 2000 ml | During severe cases | |
Extremely Toxic
Highly Toxic
Moderately Toxic
