Orchid (Dendrobium sp.)
Leaf spot (Cercospora spp., Guignardia spp., Phyllosticta spp. and Septoria spp)
Symptoms
- Spots on foliage, most of the spots have brown color.
- Spots may combine or enlarge.
- Infested leaves become yellow and drop prematurely.
Management
- Ensure good sanitation and air movement.
- Reduce leaf wetness, water on the leaves may lead to infection.
- Remove infected leaves with a sterile instrument.
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 | Carbendazim 50 WP | Bavistin, Benfil, Bengard, Benlate, Benmain, Bensaan, Carben, Carziim50, Dhanustin, Dhanustin 50 WP, Fungiguard, Gancarzin50, Glizim, Mintho, Tagstin, Tiara, Zoom | Green | 1 g/ litre of water | 10 g | 200 g | 500 g | 2 | 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 | 3 g/ litre of water | 30 g | 600 g | 1500 kg |
Extremely Toxic
Highly Toxic
Moderately Toxic
