Tomato (Solanum lycopersicum L.)
Damping off of seedlings (Pythium aphanidermatum, Pythium ultimum)
Symptoms
- Pre-emergence damping off- Young seedlings are killed before they emerge through the soil surface. Seeds may rot or seedlings may be killed before breaking of hypocotyl. base of the seedlings are completely rotted
- Post –emergent damping off- Toppling of infected seedlings occur after they emerge from the soil. Infected tissue appears soft and water-soaked.
Management
- Nursery should be well drained
- Soil solarised beds should be used for the planting of seedlings
- Apply Trichoderma enriched cow dung
- Seed treatment with Pseudomonas 2-5g/Kg seed
- Rogue out the infested seedlings
- Maiantain soil pH by adding lime/dolomite
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 | Green | 1 g | 10 g | 200 g | 500 g | Planting pits should be drench prophylatically |
| 2 | Copper oxychloride 50 WP | Bensaan, Blitox, Green copper, Greentrox, Copter, Cupramar, Cuprina, Dhanucop, Fytolan, Fytox, Fytran, Fytolan, Hilcopper, Killex copper, Maincop Dhanucop, Star cop, Tagcop, Trucop | Green | 2 g | 20 g | 400 g | 1000 g (1 kg) | Planting pits should be drench prophylatically |
| 3 | Mancozeb 75 WP | Macoban, dithiocarbamate Macoban M – 45, Mancosaan, Dhanuka M 45, M – Guard, Zinthane, Izeb M- 45 Manzate, Hindustan M 45 Devidayal M – 45, Mancosaan M – 45, Dithane M – 45, Tata M-45 Eurofil – NT, Dhanuka M- 45, Dithane, Hilthane, Indofil M 45, Savour M-45, Luzen – 45, Maneb Manzane, Uthane M- 45, Veera | Green | 4 g | 40 g | 800 g | 2000 g (2 kg) | Planting pits should be drench prophylatically |
Extremely Toxic
Highly Toxic
Moderately Toxic
