Emamectin benzoate and abamectin are both commonly used pesticides in agricultural production. However, in actual application, many growers are still not clear about the effects and efficiency of the two. Let's make an analysis on this issue.
1. Emamectin benzoate, abamectin
Abamectin is a broad-spectrum insecticide. It not only has contact and stomach poisoning effects on nematodes, insects and mites, but also has a weak fumigation effect on plot crops.
Emamectin benzoate and abamectin have similar structures. Emamectin benzoate is a new type of insecticide artificially synthesized on the basis of abamectin. It is a white or light yellow crystalline powder. It is easily soluble in acetone and methanol, slightly soluble in water, and insoluble in hexane. Emamectin benzoate has the advantages of ultra-high efficiency, low toxicity (its preparation is close to non-toxic), low residue, and pollution-free, and is widely used in the prevention and control of various pests on agricultural crops such as vegetables, orchards, and cotton farmers.
2. Pest control range
Abamectin is a full-strike insecticide. It has a control effect on various pests such as spider mites, aphids, thrips, planthoppers, cabbage worms, tobacco budworms, nematodes, red spiders, cotton bollworms, leaf miners, etc. in agricultural production. It is widely used in pest control in fruit trees, vegetables, cotton, broad beans, peanuts, and flower production.
The insect control range of emamectin benzoate after modification and synthesis is more precise and specific. At present, the main control direction of common emamectin benzoate in agricultural production is mites in our agricultural production (such as cotton red spider, wheat red spider, fruit red spider, etc.); Lepidoptera (such as cabbage worm, tobacco budworm, light leaf moth, heartworm, etc., which are called caterpillars and fleshworms by the common people); Coleoptera (such as longhorn beetles, ladybugs, beetles, click beetles, water hoppers, etc.). Emamectin benzoate has very poor control effect on pests such as thrips and planthoppers, or even no effect. Farmers need to pay attention to the fact that the selection of insecticides should be targeted, and different insecticides should be selected for different types of pests.
3. Insecticidal effect
When Abamectin first entered the market, it was used to control rice leaf rollers, aphids, planthoppers, etc. with fast and obvious effects. However, in recent years, due to the increasing use of abamectin year by year, pests have formed a certain resistance to it, and the insecticidal effect of abamectin has become very general. Now its main role is the role of "universal match", mainly used in combination with other preparations to play a synergistic role. Abamectin + chlorfenapyr is specifically used to treat fleshworms, and the duration of the drug effect is up to 20 days; abamectin + spirodiclofen has strong permeability, and is very effective in killing insects and mites and controlling red spiders; abamectin + thiazophos has a unique effect on root nematodes, etc. It is not recommended to use abamectin alone to control pests, because the effect is often poor.
Emamectin benzoate insecticide is generally used with highly effective cypermethrin in agricultural production, and has obvious effects in preventing and controlling fruit borers and cabbage worms; emamectin benzoate + chlorfenapyr can kill both insects and mites; emamectin benzoate + hexaflumuron has a rapid, thorough and lasting effect in killing insects and eggs; emamectin benzoate + indoxacarb has a fast and long-lasting effect on rice leaf rollers, beet armyworms, armyworms, cabbage worms, and borers; emamectin benzoate + chlorfenapyr can quickly kill larvae and inhibit the hatching of eggs, etc.
4. Precautions
When using these two insecticides selectively to control pests such as aphids, thrips, and planthoppers, abamectin is the first choice; when controlling pests such as borers and cabbage worms, the first choice is an insecticide containing emamectin benzoate.
When using these two insecticides, it is not recommended to use either one alone. In particular, the effect of abamectin alone is less obvious, or even ineffective. The drugs and preparations should be scientifically formulated according to the different targets of prevention and control. For example, the use of emamectin benzoate for insect control is mainly aimed at lepidoptera pests such as caterpillars and caterpillars. Emamectin benzoate can be used with chlorfenapyr, indoxacarb, etc. for better results. For the prevention and control of various pests involving fruit trees, it is recommended to use abamectin together with other drugs for obvious effects.
