What is the function of avermectin?

What is the function of avermectin? How to use avermectin correctly? Netizens who do not know are asked to help introduce avermectin EC of 0.5%, 0.6%, 1%, 1.8%, 2%, 2.8%, 5%, which are often seen in the agricultural market, but the role of avermectin is still not very clear to many farmers. therefore, the farming network has sorted out the function and usage of avermectin, which is listed in detail below for netizens' reference. The role of avermectin: avermectin is generally used to control Lepidoptera and Homoptera pests on vegetables, fruit trees, flowers, tobacco, cotton and food crops. such as Plutella xylostella, beet armyworm, Spodoptera litura, aphids, red spiders, gall mites, shell insects, thrips, rice leaf borer and other pests. The main insecticidal methods of avermectin are stomach toxicity and contact killing, and avermectin has strong permeability. It can interfere with the neurophysiological activities of pests and stimulate the production and release of γ-aminobutyric acid, thus blocking the transmission process of motor nerve information, resulting in rapid paralysis, inactivity, non-feeding and death within 24-48 hours. But avermectin had no effect on killing eggs. The usage of avermectin: 1. For the control of Plutella xylostella, Spodoptera exigua and Spodoptera litura, 1.8% avermectin EC 30ml / mu can be sprayed evenly with water. 2. For the control of fruit tree aphids, red spiders and gall mites, 1.8% avermectin EC 30ml / mu can be sprayed with water. 3. To control insect pests such as aphids, shell insects and thrips of flowers, you can spray 1.8% avermectin EC 30ml / mu with water. 4. For the control of rice leaf roller, 2.2% avermectin emulsion 30ml / mu can be sprayed evenly with water. Matters needing attention in the use of avermectin: note 1. Avermectin should not be mixed with alkaline pesticides. Note that avermectin is highly toxic to fish, so do not pollute reservoirs and rivers when using it. Third, it is best not to use avermectin during the honey gathering period of bees. Safety interval of avermectin: pear trees can use 1% avermectin EC twice at most. The safety interval is 14 days. The maximum use of cotton is 1.8% avermectin EC for a maximum of 2 times. The safe interval is 21 days. Citrus use up to 2 times 1.8% avermectin EC safe interval of 14 days. Radish use up to 2 times 1.8% avermectin EC safe interval of 7 days. The maximum use of cowpea is 1.8% avermectin EC for a maximum of 2 times. The safe interval is 3 days. Cucumber use up to 3 times 1.8% avermectin EC safe interval of 7 days. The maximum use of 2% avermectin EC in rice is 14 days. What is Emamectin Benzoate? what is the harm of root-knot nematodes?