Okra / Bhindi (Abelmoschus esculentus L.)
Damping off (Pythium sp., Rhizoctonia sp.)
Symptoms
- Damping-off kills seedlings before or soon after they emerge.
- Infection before seedling emergence results in poor germination.
- If the decay is after seedlings emergence, they fall over or die which is referred to as "damp-off."
- Seedlings develop lesion on the tender stem contacting the soil surface.
Management
- Use raised beds: 15 cm height is better for water drainage or use pro-trays for raising seedlings.
- Change the nursery site every year
- Avoid excessive irrigation.
- Ensure proper drainage.
- Remove infected seedlings.
- Healthy and the disease free seeds should be selected for sowing.
- Soil solarization by spreading 250 gauge polythene sheet over the bed for 30 days before sowing
- Seed treatment with Trichoderma viride or Pseudomonas florescence (20 g/litre of water/ kg of seed) are also found to be effective.
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 hydroxide 77 WP | HiDice, Kocide 101 | Blue | 1.5 g | 15 g | 300 g | 750 g | Drench soil with this chemical as a prophylatic measure |
| 2 | 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 | 2.5 g | 25 g | 500 g | 1250 g | Drench soil with this chemical as a prophylatic measure |
| 3 | Mancozeb 75 WP | Devidayal M-45, Dhanuka M 45, Dhanuka M-45, Dithane, Dithane M-45, Hilthane, Hindustan M 45, Indofil M 45, Izeb M-45 Manzate, Luzen-45, Macoban, Macoban M-45, Mancosaan, Mancosaan M-45, Maneb Manzane, M-Guard, Savour M 45, Tata M-45 Eurofil-NT, Uthane M-45, Veera, Zinthane | Green | 4 g | 40 g | 800 g | 2000 g | Drench soil with this chemical as a prophylatic measure |
| 4 | Carbendazim 50 WP | Bavistin, Benfil, Bengard, Benlate, Benmain, Bensaan, Carben, Carziim50, Dhanustin, Dhanustin 50 WP, Fungiguard, Gancarzin50, Glizim, Mintho, Tagstin, Tiara, Zoom | Green | 2 g | 20 g | 400 g | 1000 g | Drench soil with this chemical as a prophylatic measure |
Extremely Toxic
Highly Toxic
Moderately Toxic
