A kind of bactericidal composition for preventing and treating vegetable diseases and its application

Abstract

The invention relates to a fungicidal composition for preventing and treating vegetable diseases. The active ingredients of the fungicidal composition include flufenapyr and pyraclostrobin, and the weight ratio of the two active ingredients is (1‑10): (1‑10) , preferably (1-3):(1-3), more preferably 1:1. The fungicidal composition is applied to the prevention and treatment of tomato, potato and cucumber leaf mold, early blight and gray mold. It has good quick-acting and long-lasting effects, novel action mechanism and multiple sites, and can effectively delay the occurrence of drug resistance of pathogenic bacteria It not only has a protective effect on diseases but also has a good therapeutic effect. Furthermore, by adding conventional auxiliary agents in the field to the bactericidal composition to make it into a conventional dosage form in the field, it is more helpful for the active ingredients to exert their medicinal effects. The preparation process of the bactericidal composition is simple, the cost is low, the disease prevention spectrum is wide, the biological safety is high, and the economic benefit is remarkable.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a fungicidal composition for preventing and treating vegetable diseases and its application. Background technique [0002] Tomato leaf mold is a fungal disease caused by the fungus Fulvia fulva (Cooke) Cif., which mainly damages leaves, and also damages stems, flowers and fruits in severe cases. When the leaves are sick, yellow-green spots with inconspicuous edges appear on the front of the leaves at the early stage, and a gray-white mold layer appears on the back of the leaves, and then the mold layer turns light brown to dark brown; when the humidity is high, mold layers can also grow on the diseased spots on the surface of the leaves. The disease often occurs first on the lower leaves, and gradually spreads upwards. When the disease is severe, the mold layer is covered with the back of the leaves, the leaves are curled, and the leaves of the whole plant are yell...

AI Technical Summary

Problems solved by technology

[0008] So far, there has been no report on the use of flufenapyroxad and pyraclostrobin to develop a mixture to control leaf mold, early blight and gray mold

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