Tapioca (Manihot esculenta)
Red Spider Mites (Tetranychus urticae, Eutetranychus orinetalis, Oligonychus biharensis)
Symptoms
- Mites suck the sap from leaves and cause leaf deformation, with a rough, thickened and shrivelled appearance.
- The back of the leaf may appear scorched (turn yellowish brown) and dotted with inconspicuous whitish feeding punctures.
- During heavy infestation stunting occurs.
Management
- Spray the crop with water using sprayer.
- Spray rice gruel water on under surface of leaves (1 cup rice gruel+1 cup water).
- Spray castor oil-soap emulsion or neem oil- garlic soap emulsion (20 ml neem/caster oil +20 gram garlic paste + 5 gram soap / litre of water).
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Knapsack Sprayer (Capacity 10L) | Dosage/acre (200 L) | Dosage/hectare (500 L) |
|---|---|---|---|---|---|---|---|
| 1 | Dimethoate 30 EC | Nugor,Rogor, Tagor, Tara 909 | Yellow | 1.5 ml | 15 ml | 300 ml | 750 ml |
| 2 | Wettable sulphur 80 WP | Cosavet, Dhanusul, Koshavet 80 WDG, Mainsul, MicrosulWDG, Nanthiin DF Sulfexgol, Sulfil, Sulfoguard, Villo | Green | 2 g | 20 g | 400 g | 1000 g |
| 3 | Dicofol 18.5 EC | Hilfol Starkel, Klin, Tag fol, Tiktoc | Blue | 2.5 ml | 25 ml | 500 ml | 1250 ml |
Extremely Toxic
Highly Toxic
Moderately Toxic
