Composition for controlling diamondback moth of brassicaceous vegetable and preparation and application thereof

Abstract

The invention relates to a composition for controlling a diamondback moth of a brassicaceous vegetable and a preparation and application thereof. The composition contains two active components of chlorfenapyr(4-brombutyl-2-(4-chlorphenyl)-1-(ethoxymethyl)-5-(trichloromethyl)pyrrole-3-nitrile) and pyriproxyfen(4-phenoxylphenyl(RS)-2-(2-pyridyloxy)propyl ether), and the weight ratio of chlorfenapyr and pyriproxyfen is between 1:4 and 4:1. The composition preparation can be prepared from the composition with effective dosage, solid or liquid carriers, an auxiliary agent and other additives by a conventional method and used for processing the diamondback moth or a habitat thereof of the brassicaceous vegetable. The composition overcomes the defects of the prior art, expresses obvious synergy, can show optimal contact killing performance, stomach poisoning performance and ovicidal effect by processing the diamondback moth of the brassicaceous vegetable through applying smaller dosage, has long effect duration and simultaneously strengthens the rapid killing activity on the diamondback moth.

Description

technical field [0001] The invention belongs to the technical field of pesticides. Specifically, the present invention relates to a composition for controlling Plutella xylostella cruciferae, especially the composition for controlling Plutella xylostella cruciferae with contact killing, stomach toxicity and ovicidal effects, and its preparation and application. Background technique [0002] Plutella xylostella, also known as hanging silkworm, is one of the main pests of cabbage, cauliflower, radish, cabbage and other crops, with 10-13 generations occurring every year, especially in autumn. [0003] The adults of this moth have phototaxis and are mostly active at night. Each female moth can lay 200-300 eggs, up to more than 500 eggs, while the larvae have the habit of avoiding light. The newly hatched larvae lie on the back of the leaves for a short time. After a period of time, it will eat between the upper and lower epidermis of the leaves, and eat the lower epidermis and ...

AI Technical Summary

Problems solved by technology

[0007] It is now known that chlorfenapyr used in the present invention is a broad-spectrum insecticide, and pyriproxyfen is a commercially available compound, and is a hygienic insecticide for the prevention of infectious diseases and an agricultural The active ingredient of an insecticide, but in practical application, no one has the same report that the composition of chlorfenapyr and pyriproxyfen as the main active ingredient is used to treat the cruciferous vegetable diamondback moth

Images