Composite synergic sterilization composition containing bixafen and difenoconazole and application thereof

Abstract

The invention discloses a composite synergic sterilization composition containing bixafen and difenoconazole and application thereof. The sterilization composition employs bixafen and difenoconazole as main effective components, and the weight ratio of bixafen to difenoconazole is 1-60:1-80. The sterilization composition is applicable to control diseases of cereal crops, vegetables and fruit trees, has relatively high cooperative synergic effect, helps to overcome and delay drug resistance of pathogens, is fast in sterilization speed, relatively long in persistent period and reduced in application cost, and has obviously better control effect than other singly-used reagents. The composite sterilization composition is applicable to control fungous diseases of crops, and especially applicable to fungous diseases such as wheat rust disease, powdery mildew, leaf spot disease, brown patch, wheat scab, grey mold and the like, and has relatively good effect than singly-used effective components.

Description

Technical field: [0001] The invention relates to a bactericidal composition and its application, in particular to a bactericidal composition with bixafen and difenoconazole as main active ingredients and its application. Background technique [0002] Bixafen (Bixafen), chemical name: N-(3',4'-dichloro-5-fluoro[1,1'-biphenyl]-2-yl)-3-difluoromethyl-1 -Methyl-1H-pyrazole-4-carboxamide, molecular formula: C 18 h 12 Cl 2 f 3 N 3 O, the chemical structural formula is as follows: [0003] [0004] Bixafen is a new type of SDI pyrazole fungicide. Bixafen is developed by Bayer. The drug is a succinate dehydrogenase inhibitor with a novel mechanism of action. It is mainly developed for the prevention and treatment of leaf spot and leaf rust , but studies have shown that the new compound has good activity against a variety of pathogens, such as powdery mildew, gray mold, downy mildew, etc., and the drug is expected to become a key species for fungicide resistance control. It...

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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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