A synergistic composition with insecticidal and nematicidal effects and use thereof

Abstract

The invention discloses a synergistic composition with insecticidal and nematicidal functions. The synergistic composition contains active components A and B, wherein the mass ratio of A to B is (1:80)-(80:1); B is thiacloprid; and the compound A is a fluorinated compound containing a lactonic ring. According to the invention, a synergistic composition with insecticidal and particularly nematicidal functions is obtained by compounding the active component A containing a lactonic ring with the thiacloprid component; the bactericidal spectrum light of the composition can kill most pests, the dosage is small, the residence time in the crop body is short, and cross resistance against conventional insecticides is avoided; the composition disclosed by the invention can be made into agriculturally common dosage forms such as wettable powder, water dispersible granules, suspending agent, suspoemulsion, emulsion in water, microemulsion, dispersible oil solution, seed coating, micro-capsule suspending agent and granules; the synergistic composition can be applied to the habitats of pests and nematodes, soil, plants and seeds; and through once application, agricultural pests and pathogenic nematodes can be controlled, and the labor and force saving effect is good.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a synergistic composition with insecticidal and nematicidal effects and its application. Background technique [0002] Since the use of pesticides in the 20th century, agriculture has developed rapidly and the output of agricultural products has increased significantly. However, almost all pesticides currently have the following disadvantages: long residues in crops, being concentrated in the food chain, serious Change the ecological environment; the insecticidal spectrum is relatively narrow, insects are prone to develop resistance, the insecticidal effect is not obvious, the effect is slow, and the residual effect on crops is long. [0003] Among the types of pests, nematodes are difficult to control, because most of the nematodes live in the soil, and some parasitize in plants and spread through soil or seeds. In particular, nematodes can damage the root system of plants, ...

AI Technical Summary

Problems solved by technology

[0002] Since the use of pesticides in the 20th century, agriculture has developed rapidly and the output of agricultural products has increased significantly. However, almost all pesticides currently have the following disadvantages: they have a long residual effect in crops, they are concentrated in the food chain, and serious Change the ecological environment; the insecticidal spectrum is relatively narrow, insects are prone to resistance, the insecticidal effect is not obvious, the effect is slow, and the residual effect on crops is long.

In particular, nematodes can damage the root system of plants, or invade the organs above the ground, affect the growth and development of crops, and indirectly spread diseases caused by other microorganisms, causing great economic losses in agriculture

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

At present, there are few nematicides with better effects, only more than ten kinds. 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 new, Efficient and environmentally friendly nematicides urgently need to be developed