Bactericidal composition containing picoxystrobin and hexaconazole and application of bactericidal composition

Abstract

The invention discloses a bactericidal composition containing picoxystrobin and hexaconazole and an application of the bactericidal composition. The bactericidal composition uses the picoxystrobin andthe hexaconazole as main effective ingredients, wherein a mass ratio of the picoxystrobin to the hexaconazole is 1:50 to 50:1. The bactericidal composition disclosed by the invention can be applied to prevent and control diseases of cereals, fruit trees and vegetables, has a higher synergistic effect, overcomes and delays drug resistance of pathogenic bacteria, has a fast sterilization speed anda long lasting effect, reduces application costs, and has prevention and control effects significantly better than those of an individually-used single agent in the composition; and the bactericidal composition can be used for preventing and controlling fungal diseases on crops, in particular used for preventing and controlling fungal diseases such as leaf blotch of wheat, leaf rust, glume blotch,brown spot, powdery mildew, net blotch and leaf scald disease, rice sheath blight, rice false smut, vegetable leaf spot disease, anthracnose disease, white rot and apple powdery mildew, rust disease,brown spot, anthracnose, pear scab, alternaria blotch, ring rot anthracnose and grape black rot, and has an effect better than that of the individually-used single agent.

Description

Technical field: [0001] The invention relates to a bactericidal composition and its application, in particular to a bactericidal composition with picoxystrobin and hexaconazole as main active ingredients and its application. Background technique [0002] Picoxystrobin, a methoxyacrylate fungicide developed by Syngenta, chemical name: (E)-3-methoxy-2-{2-[6-(trifluoromethyl)- 2-Pyridyloxymethyl]phenyl}acrylate methyl ester. The structural formula is as follows: [0003] [0004] Picoxystrobin has low toxicity and is a mitochondrial respiratory inhibitor, that is, through the cytochrome b and C 1 Inter-electron transfer inhibits the respiration of mitochondria, thus playing a bactericidal and bacteriostatic role. Picoxystrobin was still effective against strains resistant to 14-demethylase inhibitors, benzamides, tricarboxamides and benzimidazoles. During use, once picoxystrobin is absorbed by the leaves, it will move in the xylem and flow in the transport system with th...

AI Technical Summary

Problems solved by technology

[0008] However, wheat leaf blight, leaf rust, glume blight, brown spot, powdery mildew, net spot and moire, rice sheath blight, rice false smut, vegetable leaf spot, black pox, white rot Diseases and apple powdery mildew, rust, brown spot, anthracnose, pear scab, spot defoliation, ring anthracnose, and grape black rot are more serious, causing catastrophic losses to agricultural production. A single dose of ester and hexaconazole has a relatively ideal control effect on some diseases, but in practical applications, it is found that the control of plant pathogens is becoming more and more difficult. The main reasons are as follows: First, with the change of planting structure, the fruit The planting area of ​​economic crops such as vegetables and vegetables is gradually expanding, and the degree and number of disease occurrences have increased, making it more difficult to prevent and control; second, the current abnormal climate provides certain conditions for the outbreak of diseases; third, long-term chemical drug use The selective influence of the pathogenic bacteria makes the resistance of pathogenic bacteria increase year by year under the pressure of continuous agent selection, and the control effect of a single agent is greatly reduced

In summary, the current plant disease control is facing major challenges

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