Acaricidal composition containing bifenazate and application thereof

Abstract

The invention discloses an acaricidal composition which comprises a synergic effective dose of acaricidal material bifenazate A and at least one macrolide acaricidal compound B as active components, wherein the macrolide acaricidal compound B is selected from avermectin, pleocidin, emamectin benzoate and invermectin, and based on the active components, the proportion of A to B according to parts by weight is 5-70:0.1-10. The composition can be prepared into oil emulsion, suspending agents, aqueous emulsion, micellar emulsion, wettable powder, microcapsule agents and other formulations for controlling acarid of various crops such as fruit trees, tea trees, vegetables and the like.

Description

technical field [0001] The invention relates to an acaricidal composition and its application, in particular to an acaricidal composition compounded with bifenazate and a macrolide compound and its application. technical background [0002] Bifenazate English common name bifenazate, chemical formula C 17 h 20 N 2 o 3 . The structural formula is as follows: [0003] [0004] Bifenazate is a gamma-aminobutyric acid (GABA) antagonist, which mainly controls active spider mites. It has good quick effect and is effective against larvae, adults and nymphs. Spider mites are ovicidal. Laboratory studies have shown that bifenazate has no negative effects on beneficial predatory mites; toxicity to mammals is low (LD 50 is 5000mg / kg); in the environment, the persistence period is short (DT 50 <1d). Currently, bifenazine sold in the market is a suspension concentrate of 480 grams per liter, which is mainly used to prevent and control red spider mite in apple trees. [000...

AI Technical Summary

Problems solved by technology

[0005] As a new hydrazine ester professional acaricide, bifenazate has the risk of high use cost and gradually increasing resistance risk during use, and because of its non-systemic characteristics, although the duration of effect can be For as long as 30 days, the rainfall after application has a great influence on the efficacy of the drug, and the rational mixing with different types of acaricides, especially with the acaricides with systemic effect, can fully and effectively promote bifenazate and prolong its life. Service life plays an important role

At present, the pesticide preparations with bifenazate as the active ingredient are mainly 480 g / L bifenazate suspension concentrate. In actual use, the quick effect is good. Without systemic properties, the acaricide will not be complete, and the cost of use will be high

[0006] Although macrolide compounds are not systemic, they can penetrate into the epidermal tissue of crops, so they have a longer residual effect

Moreover, the use of the current single agent of acaricide not only increases the resistance of pest mites, but also increases the production cost of farmers. At present, the original drug of bifenazate is still in the patent protection period, while the compounding of other macrolide compounds , so far there is no literature report

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