Cotton (Gossypium sp.)
Aphids (Aphis gossypii)
Symptoms
- Both adult aphids and their young ones suck plant sap, which causes leaves, buds, branch tips, and flowers to become distorted.
- Severely infested leaves and flowers may fall off.
- While feeding, aphids release a sweet, sticky substance called honeydew onto the leaves below.
- This allows sooty mould to grow which not only looks unpleasant & hinders photosynthesis
Management
- Spray tobacco decoction or neem oil-garlic emulsion (20 ml neem oil+ 20 gram garlic paste+ 5 gram bar soap dissolved / litre of water) or Nattapoochedi (Hyptis suaveolens) emulsion (100 gram/ litre of water) or Neem Seed Kernal Extract (50 gram/litre of water).
- Spray Lecanicillium lecanii (synonym Verticillium lecanii) (20 gram/litre of water).
- Release green lacewing bugs @ 50,000 eggs/ha.
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 | Imidacloprid 17.8 SL | Admit, Agro mida, Atom Imidacel, Confident, Confidor, Courage, Crop mida, Hilmida, Imida Gold Anumida, Imigro, JK Imida, Jumbo Imidastar, Maharaja, Mantra, Media Victor, Nagarjuna mida, Novastar, Seamer, Sensex, Shogun, Tata mida, Tropical Magic | Yellow | 0.25 ml | 2.5 ml | 50 ml | 125 ml | |
| 2 | Dimethoate 30 EC | Nugor, Rogor, Tagor, Tara 909 | Yellow | 1.5 ml | 15 ml | 300 ml | 750 ml | |
| 3 | Buprofezin 25 SC | Applaud, Apple, Flotis, Jawaa, Koram, Lapa Pi Bupro, Ninja, Tagvoltage | Blue | 2 ml | 20 ml | 400 ml | 1000 ml | |
| 4 | Flonicamide 50 WG | Ulala | Blue | 0.3 g | 3 g | 60 g | 150 g | |
| 5 | Thiacloprid 21.7 SC | Alanto, Tagsulf | Yellow | 0.2-0.25 ml | 2-2.5 ml | 40 - 50 ml | 100 - 125 ml | |
| 6 | Diafenthiuron 50 WP | Polo, Pegasus | Yellow | 1.2 g | 12 ml | 240 ml | 600 ml | |
Extremely Toxic
Highly Toxic
Moderately Toxic
