Bactericidal composition containing isopyrazam and kresoxim-methyl and application thereof

Abstract

The invention discloses a bactericidal composition containing isopyrazam and kresoxim-methyl and application thereof. The bactericidal composition is composed of main effect components isopyrazam and kresoxim-methyl in a weight ratio of (1-65):(1-70). The bactericidal composition is used for preventing and treating diseases of cereal crops, vegetables and fruit trees, has higher synergic action, overcomes and postpones the drug resistance of pathogenic bacteria, has the advantages of high bactericidal speed, long duration period and lower application cost, and has obviously better preventing and treating effects than a single agent. The bactericidal composition can be used for preventing and treating fungus diseases on crops, especially can be used for preventing and treating such fungus diseases as rust disease, powdery mildew, leaf spot, net blotch, glume blight, leaf blight, downy mildew, epidemic disease and the like, and has better effects than a single agent.

Description

Technical field: [0001] The invention relates to a bactericidal composition and its application, in particular to a bactericidal composition with pyraclostrobin and kresoxim-methyl as main active ingredients and its application. Background technique [0002] Isopyrazam, chemical name: 3-difluoromethyl-1-methyl-N-[1,2,3,4-tetrahydro-9-(1-methylethyl)-1 ,4-methanonaphthalen-5-yl]-1H-pyrazole-4-carboxamide, molecular formula C 20 h 23 f 2 N 3 O, Isopyrazam has the following four isomers, the present invention includes any one or a mixture of several, and the chemical structural formulas are as follows: [0003] [0004] Pyrafenapyr was developed by Syngenta. This fungicide has broad-spectrum activity and has excellent control performance on various diseases on various crops. It is resistant to triazoles and methoxyacrylates. It is highly effective against sexual strains of pathogens, especially against Septoria fungi. For example, it is superior to epoxiconazole in the ...

AI Technical Summary

Problems solved by technology

[0008] Methoxyacrylate fungicides are a new type of fungicides that have emerged in recent years. They are currently one of the main types of fungicides in the market for the prevention and treatment of fungal diseases. The market share is very large. This type of fungicides has high activity but a single target. This also leads to the rapid occurrence of bacterial resistance. For example, some of these agents are not as good as before in the prevention and treatment of powdery mildew. Even if the dosage is increased, they cannot achieve the desired effect. Matching research is imminent

[0009] At present, the prevention and control of plant pathogens is becoming more and more difficult. On the one hand, with the change of planting structure, the degree and number of diseases of melons, fruits, vegetables, and cereal crops have increased, and the difficulty of prevention and control has increased objectively; On the other hand, continuous drug use leads to an increase in the resistance of pathogenic bacteria year by year under the pressure of continuous agent selection, and the control effect of a single agent is greatly reduced; thirdly, the current introduction of new pesticide varieties has dropped significantly, and there is a lack of new target agents ; Fourth, due to the gradually stricter environmental protection requirements, some products are restricted in use, resulting in less selective medication

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