The use of cypermethrin

Cypermethrin, also known as cypermethrin valerate, is an agricultural insecticide, which mainly controls Lepidoptera pests on crops and has strong toxicity. The appearance of the original drug is white to cream-colored crystal, easily soluble in aromatics, ketones and alcohols. The following mainly introduces the use and usage of cypermethrin.

Beta-cypermethrin is a pyrethroid insecticide with high biological activity. It is an efficient isomer of cypermethrin and has contact and stomach toxicity. The insecticidal spectrum is wide, the knockdown speed is fast, and the insecticidal activity is higher than cypermethrin. It is suitable for controlling pests and sanitary pests on cotton, vegetables, fruit trees, tea trees, forests and other plants.

Usage of beta-cyhalothrin.

The main results are as follows: 1. Drill-feeding pests, such as rice core borer, longitudinal leaf borer, cotton bollworm, etc. during the egg incubation period, the larvae were sprayed with 1500-2000 times of 2.5-EC before drilling into the crop, and the solution was evenly sprayed to the part of the crop affected by the insect.

2. Fruit tree pests: control peach heart borer, use 2.5% EC 2000-4000 times, or add 2.5% EC 25-50OmL spray to each 100ml water. Control Spodoptera litura. Use 2.5% EC lOOO-1500 times or spray 2.5% EC 50-66.7mL in 100L water during the peak adult or egg incubation period.

3. Vegetable pests: the control of cabbage pests should be carried out before the 3rd instar larvae. An average of 1 insect per cabbage plant was used, 2.5% EC 26.8-33.2mL/667m2 was used, and 20-50 water was sprayed. Aphids must be controlled before major occurrence, and the liquid should be evenly sprayed on the insect body and the parts damaged by the insect.