Fenvalerate method

At night, spray fenvalerate evenly in the ditch, then bury the cage on the bank, and the next morning you can catch the crayfish that crawl into the cage and pass out. Although this method can catch shrimp, it is particularly toxic to crayfish and can cause direct dizziness or even death. At the same time, the poison left in the body, whether brewed in clean water or cooked, cannot be completely removed, so it is best to use less to avoid poisoning after eating.

Usage of fenvalerate:

1. Cotton pest control Helicoverpa armigera is sprayed with 25-50ml water with 20% EC per mu during the egg incubation period and before the larvae eat buds and bolls. This concentration can also be used for effective control of Helicoverpa armigera in the peak egg hatching period. At the same time, it can also treat red spiders, small bridge worms, diamond diamonds, leaf rollers, thrips, bug bugs and other pests. Cotton aphids use 20% EC 10-25ml per mu, but increase the dosage for summer aphids.

2. Control of fruit tree pests the citrus leaf miner was sprayed with 5000-8000 times of 20% EC at the initial stage of new shoots in each season. At the same time, it can also treat orange aphid, leaf roll moth, planthopper and so on. Citrus scale insects are sprayed with 2000-4000 times of 20% EC during egg incubation.

3. Control of vegetable pests the 2nd-3rd instar larvae of Pieris rapae were applied with 20% EC 10-25ml per mu. Diamondback moth (Plutella xylostella) was controlled with 15-30ml/ mu of 20% EC before 3 years old.

4. Soybean pest control heart borer is applied in the peak flowering period and egg hatching peak of soybean, 20% EC 20-40ml per mu can effectively control pods, aphids and ground tigers at the same time.

5. Wheat pest control, wheat aphid, armyworm, during the occurrence period of wheat aphid and the 2nd-3rd instar larvae of armyworm, spraying with 3000-4000 times of 20% EC.

① can control peach heart borer, pear heart borer, diamondback moth and leaf curl in jujube, apple and other fruit trees. during the period of adult oviposition, spray 3000 times 20% fenvalerate EC + 1000 times fruit tree special type "Tianda 2116" before fruit decay of newly hatched larvae, which can kill insect eggs and larvae and prevent fruit decay. Its residual period can last 10-15 days and the fruit preservation rate is high.

② can control borer moth and leaf moth, spray 2000-3000 times 20% fenvalerate EC + 1000 times fruit tree special type "Tianda 2116" liquid at the initial stage of larval sting, which is effective in killing insects and protecting leaves, and can also control aphids and planthoppers.

③ can control leafhopper and leaf miner, spray 4000-5000 times 20% EC at the initial stage of adult oviposition, and has a good effect on killing insects and protecting leaves.

④ controls leaf-eating pests of jujube, apple and other fruit trees, such as diamondback moth, Dendrolimus punctatus, apple boat moth, etc., spraying 2000-5000 times of 20% EC during the peak period of young larvae and concentrated damage.

The above is the introduction of fenvalerate fan shrimp method, I hope it will be helpful to everyone.