Carrot (Daucus carota)
Black rot (Alternaria radicina)
Symptoms
- The seed and soil-borne disease is characterized by a shiny black decay at the crown area and a greenish-black mold on the tap root.
- The infected tissue is greenish black to jet black due to the presence of masses of black spores.
- The disease affects the roots in the field as well in storage.
Management
- Proper field sanitation and practicing rotation helps to keep the disease under control.
- Store carrots at 0oC and 95 percent humidity, and ensure that there is no moisture on their surfaces.
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 g/litre of water | 10 g | 200 g | 500 g | - |
| 2 | Copper oxychloride 50 WP | Bensaan, Blitox, Blue copper, Bluetrox, Copter, Cupramar, Cuprina, Dhanucop, Fytolan, Fytox, Fytran, Hilcopper, Killex copper, Maincop, Star cop, Tagcop, Trucop | Blue | 2 g/litre of water | 20 g | 400 g | 1000 g | - |
| 3 | Mancozeb 75 WP | Devidayal M-45, Dhanuka M 45, Dithane, Hilthane, Hindustan M 45, Indofil M 45, Izeb M-45, Luzen-45, Macoban, Mancosaan, Maneb, M-Guard, Savour M 45, Tata M-45, Uthane M-45, Veera, Zinthane | Green | 3 g/litre of water | 30 g | 600 g | 1500 g | - |
| 4 | Carbendazim 50 WP | Bavistin, Benfil, Bengard, Benlate, Benmain, Bensaan, Carben, Carziim50, Dhanustin, Fungiguard, Gancarzin50, Glizim, Mintho, Tagstin, Tiara, Zoom | Green | 1 g/litre of water | 10 g | 200 g | 500 g | - |
Extremely Toxic
Highly Toxic
Moderately Toxic
