Nematicidal composition and application thereof

Abstract

The invention discloses a nematicidal composition and application thereof. The composition comprises active ingredients A and B, and a mass ratio of A to B is 20:1 to 1:20. The ingredient A refers to one of fosthiazate, abamectin, furfural, dazomet, fluopyram, carbosulfan, metham, verticillium chlamydosporium, emamectin benzoate, paecilomyces lilacinus or fluensulfone; and the structural formula of the ingredient B is a formula I or a formula II, wherein the formula I is as shown in the specification, and the formula II is as shown in the specification. The nematicidal composition disclosed by the invention is used for killing plant parasite nematodes comprising root-knot nematodes, ditylenchus destructor, heterodera sachachtii, pratylenchus coffeae and bursaphelenchus xylophilus, is composed of a novel nematicide containing lactonic rings and the existing insecticides and bactericides, and has good nematocidal activity and low toxicity to people and livestock. The nematicidal composition disclosed by the invention has an excellent effect of controlling eggs and second-stage larvae of the root-knot nematodes.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a nematicide composition and its application. Background technique [0002] Most of the nematodes live in the soil, some are parasitic in the plants, spread through the soil or seeds, can damage the root system of plants, or invade the organs of the above-ground parts, affect the growth and development of crops, and indirectly spread diseases caused by other microorganisms, causing agricultural pollution. huge economic losses. Nematodes are difficult to remove due to their hidden parasitic sites, and existing nematicides are prone to drug resistance, which exacerbates the difficulty of nematode control. [0003] At present, there are few nematicides with better effects, only more than ten kinds, and because the existing nematicides with better effects are highly toxic to humans and animals, and some varieties have phytotoxicity to crops, affecting their use, so the new , Eff...

AI Technical Summary

Problems solved by technology

[0002] Most of the nematodes live in the soil, some are parasitic in the plants, spread through the soil or seeds, can damage the root system of plants, or invade the organs of the above-ground parts, affect the growth and development of crops, and indirectly spread diseases caused by other microorganisms, causing agricultural pollution. huge economic loss

Nematodes are difficult to remove due to their hidden parasitic sites, and the existing nematicides are prone to drug resistance, which exacerbates the difficulty of nematode control

[0003] At present, there are few nematicides with better effects, only more than ten kinds, and because the existing nematicides with better effects are highly toxic to humans and animals, and some varieties have phytotoxicity to crops, affecting their use, so the new , Efficient, environmentally friendly nematicides urgently need to be developed