Abamectin is an old variety with a history of more than 30 years. It is a type of antibiotic pesticide with insecticidal, acaricidal, fungicidal and nematicidal activities. Due to the broad spectrum and high efficiency of abamectin, farmers are overly dependent on it. They do not use it in a reasonable rotation during field control, which leads to increased resistance of insects and mites. They also arbitrarily increase the dosage and the content of active ingredients continues to increase. So far, the content of abamectin has reached 10%.
Abamectin is used to control small insects, many generations, and easy to develop resistance, such as pear psyllids, cotton aphids, leaf-mining pests, such as American leafminers, mites, such as two-spotted spider mites, tea orange spider mites, hawthorn spider mites, and pests with a wide host and a variety of feeding habits, such as diamondback moths. However, due to its unique mechanism of action and no cross-resistance with other agents, it is still widely used in compounding and mixing with other compounds to significantly improve the efficacy.
Abamectin mechanism of action
Abamectin has stomach poison and contact killing effects on mites and insects, and has strong penetration. After the liquid is sprayed on the plant leaves, it quickly penetrates into the mesophyll to form numerous micro-drug capsules. After the adult mites, nymphs and larvae of insects feed and contact the liquid, they immediately show symptoms of paralysis, do not move, and do not feed, but cannot kill eggs.
1.8% Abamectin: With the years of use and the variation of insects and mites, it is currently difficult to directly kill insects and mites by using 1.8% Abamectin alone. It has more effects on reducing the ability to move, and it should be used in combination with compounds with different mechanisms of action for synergy.
5% Abamectin: Due to the increase in the content of active ingredients in the preparation and the role of high-efficiency penetration aids, the effect is much better than that of 1.8% Abamectin. It is mainly used in combination with targeted compounds for situations where the number of insects is dense and the insect body is large.
What pests are mainly killed?
1. Mite killer
Abamectin has good effects on citrus red spiders and other fruit tree red spiders and other mites. It is often combined with spirodiclofen and etoxazole to control mite pests. Abamectin has strong penetration ability and still has a certain market in the control of mites.
Citrus red spiders: Citrus red spiders start to cause damage in early spring, reaching a peak in April and May. After May, the temperature rises and the insect population density decreases. In September and October, the insect population rises again, and the damage worsens.
Rust spiders: They begin to reproduce after March, and the insect population increases rapidly after May. The fastest occurrence and the heaviest damage are from July to October.
2. Excellent effect on lepidopteran pests
Abamectin is registered more on the lepidopteran pest diamondback moth, and occasionally on the rice leaf roller. At present, abamectin is mainly used to fight leaf rollers on rice. Due to the long use time, abamectin is generally combined with tetrachlorfenapyr, chlorfenapyr, etc. to control leaf rollers.
In recent years, the rice market has seen the use of high-dose abamectin to fight resistant rice borers. When combined with other agents, the effect is quite good. Abamectin is less used on vegetable diamondback moth, mainly because the resistance is too great.
3. It can be used to kill root-knot nematodes
Abamectin is also effective in controlling soil root-knot nematodes. It is generally in the form of granules. Some registration certificates are for a combination of abamectin and thiazophos.
At present, the root-knot nematode market is large, and the market prospects of abamectin are still good.
Usage technology and method (compound)
1. 1.8% Abamectin
(1) For use against mites
1.8% Abamectin 1000 times + spirocyclohexine 1500 times + fenpyroximate 1000 times + chlorpyrifos 1000 times
1.8% Abamectin 1000 times + etoxazole 2000 times + profenofos 1000 times + thiamethoxam 2000 times
1.8% Abamectin 1000 + etoxazole 1500 times + fenpyroximate 1000 times + profenofos 1000 times + dinotefuran 2000 times
1.8% Abamectin 1000 times + mineral oil 200 times
(2) For use against nematodes: use three times as a stage
Nematodes are not serious: 1.8% Abamectin 1000 times + water-soluble fertilizer together
Nematodes are very serious: 1.8% Abamectin 1000 times + Paecilomyces lilacinus used together
2. 5% Abamectin
Red spider is difficult to prevent orchard:
5% Abamectin 2000 times + etoxazole 2000 times + high chlorine 1000 times + dinotefuran 2000 times
5% Abamectin 2000 times + pyraclostrobin 1500 times + profenofos 1000 times + thiamethoxam 2000 times
5% Abamectin 2000 times + spiroclostrobin 2000 times + high chlorine 1000 times + profenofos 1000 times + dinotefuran 2000 times
5% Abamectin 2000 times + mineral oil 200 times - single use.
