Diafenthiuron is a new thiourea insecticide and acaricide, which has the functions of touch, stomach poison, inhalation and fumigation, and has certain ovicidal effect. Low toxicity, but highly toxic to fish and bees.
Function characteristics
By interfering with the energy metabolism of the nervous system and destroying the basic function of the nervous system,Diafenthiuron can inhibit chitin synthesis. After field application of the drug, the pests first paralyze and then die, so the initial effect is slow, the effect is effective 3 days after application, and the drug effect reaches its peak 5 days after application.
The photoactivation of Diafenthiuron, under the irradiation of ultraviolet light, is decomposed into a carbonized diamine with the help of multifunctional oxidase in insect body. This substance has the effect of blocking the synthesis of mitochondrial adenosine triphosphate (ATP) in the nerve cells of insect body, affecting its respiration and energy metabolism.
Control object
Diafenthiuron is widely used in cotton, fruits, vegetables and tea. The agent is a selective insecticide with endosorbent and fumigating effects to control sensitive strains of aphids and aphid resistant to carbamate, organophosphorus and pyrethroids, as well as to control macroleaf hopper, whitefly tabaci, Diamonopsis diamonis, and Pyrethroids. It can be mixed with most acaricides and insecticides.
Usage and dosage
(1) The prevention and treatment of cruciferous vegetable diamonds moth in the young larval stage, with 50% Diafenthiuron wettable powder 40~60g water spray per mu. The safety interval is 14 days and can be used up to 2 times per quarter.
(2) To prevent and control apple red spider in the adult mites, if the mite stage of application, per mu with 50% Diafenthiuron wettable powder 1000~2000 times the liquid whole plant spray. The safety interval is 21 days and can be used up to 2 times per quarter.
(3) The control of cruciferous vegetables in the young larval stage of the application of medicine, 25% Diafenthiuron emulsion 60~100mL and 80~120mL water spray per mu, respectively. The safety interval is 7 days and can be used up to once per quarter.