Bactericidal composition containing isopyrazam and prothioconazole and application thereof

Abstract

The invention discloses a bactericidal composition containing isopyrazam and prothioconazole and application thereof. The bactericidal composition is composed of main effect components isopyrazam and prothioconazole in a weight ratio of (1-60):(1-80). 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, brown spot, sheath blight, hollow stald rot, blight 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 prothioconazole 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] Triazole fungicides are fungicide varieties with a long history of application in my country, and play an important role in the prevention and control of crop diseases such as powdery mildew and rust. Although triazole fungicides are still used in large areas, the strains The sensitivity of this kind of pesticides has dropped significantly, and the dosage in the field has gradually increased, which has created greater pressure on the environment and resistance. Therefore, relevant research should be carried out to slow down the emergence of resistance, and different mechanisms should be used. The mixed use of medicines is the main research direction

[0009] At present, with the change of planting structure, the degree and number of diseases of melons, fruits, vegetables, and cereal crops have increased, and it is more difficult to prevent and control objectively; Under pressure, the resistance of pathogenic bacteria is increasing year by year, and the control effect of a single agent is greatly reduced; thirdly, the introduction speed of new pesticide varieties has dropped significantly at present, and there is a lack of new target agents; fourthly, due to the increasingly stringent environmental protection requirements, some Products are restricted in use, resulting in less selective medication

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