Banana (Musa spp.)
Sigatoka leaf spot (Cercospora musae)
Symptoms
- Initial symptoms - Pale yellow/dark brown/black streaks running parallel to veins, or light yellowish spots especially on lower leaves.
- Streaks enlarge to form characteristic oval or oblong spots with greyish brown center and dark brownish to black margin with yellow halo.
- The spots on lower leaves of young plants are dark brown and oval to circular.
- Centre of the spots dries out, becoming light grey margined by narrow dark brown or black border.
- The petiole of the affected leaf collapse and the leaves hang down from the pseudo stem.
Management
- Remove and destroy severely infected and completely dried leaves.
- Improve drainage, adopt weed control and proper spacing, and remove excess suckers.
- Spray Bordeaux mixture (1%)
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, B-stin 50 WP, JK Stein 50 WP, Carben, Carziim 50, Dhanustin, Dhanustin 50 WP, Fungiguard, Gancarzin 50, Glizim, Mintho, Tagstin, Tiara, Zoom | Green | 1 gm /litre of water | 1 g | 200 g | 500 g | |
| 2 | Hexaconazole 5 EC | Contaf plus, Danzole plus, Force plus 5, Fowmox, Hexaan white, Hexadhan plus, Hexan white, Hexazole Gold, Nagarjuna Mass+, Remo, Sitara plus, Xantho Premium | Blue | 1 ml /litre of water | 1 ml | 200 ml | 500 ml | |
| 3 | Propiconazole 25 EC | Bumper, Dhan, Pinade, Propiguard, Propik Final, Radar, Result, Tilt, Tilt Albu, Zetox | Blue | 1 ml /litre of water | 1 ml | 200 ml | 500 ml | |
Extremely Toxic
Highly Toxic
Moderately Toxic
