Insecticides
Cypermethrin 40% EC (Emulsifiable Concentrate)
Cypermethrin acts by interfering with sodium channels in the insect’s nerve cells, thereby disrupting nerve impulse transmission.
- Product Name: Cypermethrin 40% EC (Emulsifiable Concentrate)
- Trade Name: Ripcord
Group: Pyrethroid
WHO Toxicity Class: II – Toxic and Harmful
Type: Non-systemic insecticide with contact and ingestive (stomach) action; also exhibits anti-feeding properties - Pre-Harvest Interval (PHI):
- Apple and Cotton: 21 days
- Application Management:
- Cypermethrin acts by interfering with sodium channels in the insect’s nerve cells, thereby disrupting nerve impulse transmission.
- Its effect is primarily contact-based, and efficacy depends on the thoroughness of spray coverage.
- It provides fast and persistent control, highly effective against larval and adult stages of Lepidoptera (moths).
- Protects the aerial parts of plants for several weeks, covering the plant’s vulnerable growth stages.
- The active ingredient penetrates plant tissues, enabling control of leaf miners and other internal feeders.
- In field crops, repeat spraying is recommended every 10–14 days. For whiteflies and greenhouse pests, intervals may be shorter.
- In cereals, apply in autumn for control of cereal aphids, and in spring or summer for ear aphids.
- For flea beetles, cabbage butterflies, and cabbage aphids, spraying should begin upon the first signs of infestation, with repeat treatments as needed.
- Compatibility and Mixing:
- Compatible with most insecticides and fungicides, except alkaline compounds such as Bordeaux mixture.
- Target Crops and Application Rates:
Crop Pest Application Rate Method Apple Codling moth (Cydia pomonella) 75 cc per 1000 L water Foliar spray Cotton Cotton aphid (Aphis gossypii) 175 cc per hectare Foliar spray - Notes:
- Ensure uniform coverage for optimal contact efficacy.
- Avoid spraying during high wind or extreme heat.
- Rotate with insecticides from different chemical groups to prevent resistance development.
