Introduction to Avermectin:
The insecticidal mechanism of avermectin is to interfere with the neurophysiological activities of pests, stimulate the release of Y-aminobutyric acid, and this component has an inhibitory effect on the neural conduction of pests, playing a role in gastric toxicity and contact killing. After application, the pest exhibits symptoms of paralysis, inactivity, and does not eat for about three days before gradually dying. Therefore, the insecticidal speed of abamectin is slower and does not have the effect of killing eggs. To solve this problem, the best method is to combine abamectin with highly effective insecticides and insecticides with egg killing functions to solve the shortcomings of abamectin. For example: Avermectin+acetamiprid, Avermectin+imidacloprid, Avermectin+furfuran, Avermectin+thiacloprid, etc. can all be used.
Usage of Avermectin:
(1) Vegetable pests control diamondback moth, cabbage worm, 1.8% emulsifiable concentrate 30-50 ml per mu, 15-20 kg water spray. To prevent and control Liriomyza sativae and other leaf miner pests on beans and other vegetables, use 40~60ml 1.8% emulsifiable concentrate per mu and 20 kg water spray. To control beet armyworm, use 1.8% emulsifiable concentrates 1500~2000 times of liquid spray. To control leaf mites on vegetables, spray with 1.8% emulsifiable concentrates 1000~2000 times.
To prevent and control cucumber root knot nematode disease, use 1-1.5 milliliters of 1.8% emulsifiable oil per square meter, add 2-3 kilograms of water, and spray the ground; Alternatively, use 1.8% emulsion at a ratio of 1000-1500 times to irrigate the plant and hole, with an effective period of about 60 days and a prevention effect of over 80%.
(2) Fruit tree pests are mainly used to control various harmful mites, such as apple red spider, hawthorn red spider, plum leaf mite, two spotted leaf mite, citrus whole claw mite, rust wall lice, and pear wood lice. Generally, 1.8% emulsion 1000-2000 times or 0.9% emulsion 1000-1500 times is sprayed during the concentrated occurrence period of harmful mites, with high control effect and an effective control period of about 30 days.
To prevent and control pear wood lice, 1.8% emulsifiable concentrate 1000-2000 times or 0.9% emulsifiable concentrate 1000-1500 times is generally sprayed during the peak period of infestation by the young and nymphs of each generation of pear wood lice. The effective control period is 15-20 days.
To prevent and control persimmon pink scale, spray 1.8% emulsifiable concentrate 1000 times during the initial nymph stage. To prevent and control the wax scale on persimmon turtles, during the late hatching stage and when the nymphs have not formed a lot of wax, spray 1.8% emulsion at a rate of 2000 times, and spray again every 3 days.
Avermectin also has good control effects on aphids, golden striped moths, leafminer moths, and leaf roller moths. Generally, 1.8% emulsifiable concentrate is used for 4000-5000 times liquid spray.
(3) Cotton pests are generally spray with 1.8% emulsifiable concentrate 1000~2000 times liquid to control leaf mites. Prevention and control of cotton bollworm
Use 42~70ml of 1.8% emulsifiable concentrate per mu, and 15~20kg of water for spray.
(4) 1.8% emulsifiable concentrate 40ml per mu, 20 kg water spray
Post time: Nov-24-2023