Efficient use of chlorbenzuron pesticides to grasp the following points, you can get twice the result with half the effort.
1, pest control use of pesticides to control diflubenzuron best gold miner with mosquito diflubenzuron of pesticides is the generation and overwintering adult Sheng period to a second generation of larvae hatch, at the beginning of use of insect larvae It is best to kill juvenile pesticides. The larger the age of the insects, the greater the lethal dose of the drug and the worse the control effect. Wait until the leaf miner, leaf curler, and heartworm enter the leaves, drill into the fruit, or spray the pesticide after forming the coating. The effect is worse. It is more difficult to control when the generations cross, so "medicine and other insects to eat", do not " See the insect medication."
2, the concentration of chlorbenzuron pesticides should be accurate. At present, the chlorfenapyr and triflumuron on the market are mostly suspending agents. When using, shake the bottle with internal medicine first, then dilute with a small amount of water, then add water to the required concentration. Stir well and spray. Although it is a highly effective and safe insecticide, it is insoluble in water and has very low solubility in most organic solvents. It is difficult to process into emulsifiable concentrate or ultra-low oil. If the spray concentration is too high and the droplets are too large, it will have a repellent effect on the pests. For the 25% chlorfenapyr suspension, it is generally preferred to spray 1500 times.
3. Spraying the chlorpyrifos pesticide to be uniform The insecticidal mechanism of the chlorfenapyricide is to inhibit the chitin synthesis of the insect epidermis, so that after the larvae take the medicine, they cannot form a new epidermis and die without peeling. It is mainly a stomach poisoning effect, and can also invade the epidermis of insects and eggs, but has no systemic action. Therefore, it is necessary to let the insects eat before they are effective. Eggs of the golden mosquito moth are produced on the back of the leaf, and the first-instar larvae bite into the leaf from the back of the leaf. If the spray cannot be sprayed on the back of the leaf, the control effect is very poor. In terms of control effect, the killing effect of chlorhexidine and urea is better than that of chlorfenapyr. Spraying on the back of the plant leaves, the newly produced eggs of the golden mosquito moth will die, and the unhatched eggs will also die, so the spray must emphasize a "even" word.
4, when buying chlorpyrifos pesticides, be careful not to use the compounding agent. Some pesticide manufacturers mix the chlorbenzuron and the quick-acting insecticide , and lose the significance of applying the chlorfenapyr. Deceptiveness should be of concern, so as not to be fooled. This is because the chlorfenapyr is not a quick-acting insecticide, the contact action is poor, and there is no systemic effect. The medicinal effect gradually increases after 3-5 days after application, and some fruit farmers mistakenly believe that the drug effect is not good.
5, the use of chlorbenzuron pesticides must not be mixed with alkaline substances chlorpyrifos pesticides can not be mixed with alkaline substances, and generally acidic or neutral agents with mixing, the efficacy is not reduced. Adding 300 times of urea solution to the chlorfenapyr will make the droplets smaller and reduce the volatilization rate of the agent by 25%-33%. When the chlorfenapyr is mixed with other agents, some of the agents may cause cross-resistance to the pests, and some agents can cause it to have negative resistance. The plant synergist has synergistic effect and inhibition. The role of resistance.
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