Bactericidal composition containing pyraclostrobin and difenoconazole and application thereof

Abstract

The invention discloses a bactericidal composition containing pyraclostrobin and difenoconazole and an application thereof. The bactericidal composition takes pyraclostrobin and difenoconazole as main active ingredients, wherein the weight ratio of pyraclostrobin to difenoconazole is (1-70):(1-50). The bactericidal composition can be used for preventing the diseases of cereal, melon and fruit or vegetable crops, has relatively high synergistic effect, overcomes and delays the drug resistance of germs, and realizes high bactericidal speed and long duration while the application cost is reduced and the prevention effect is obviously better than that of using a single agent. The bactericidal composition disclosed by the invention can be used for preventing fungal diseases of crops and particularly can be used for preventing the fungal diseases such as downy mildew, sheath blight, false smut, scab, brown spot, glume blight, leaf blight, rust disease, powdery mildew, early blight, leaf spot disease, net blotch and the like of the cereal, melon and fruit or vegetable crops, and the effect is better than that of using 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 difenoconazole as main active ingredients and its application. Background technique [0002] Pyraclostrobin, also known as: pyraclostrobin, the chemical name is N-methoxy-N-2-[(N-p-chlorophenyl)-3-pyrazolyloxymethyl]benzene base carbamate. The structural formula is as follows: [0003] [0004] Low toxicity of pyraclostrobin: rat oral>5000, skin>2000, non-irritating to rabbit eyes, no potential mutagenicity, no teratogenic carcinogenicity, harmless to bees, hydrolysis half-life in water DT 50 >30d, stable at pH5-7, photolysis half-life in water DT 50 <2h, soil half-life DT in field 50 2-37d. The compound is not only low in toxicity, safe for non-target organisms, but also safe and friendly to users and the environment, and has been listed as a "candidate agent for reducing risk" by the US EPA....

AI Technical Summary

Problems solved by technology

[0008] 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 planting area of ​​economic crops such as melons, fruits and vegetables has gradually expanded, and the degree and number of diseases have increased, making the prevention and control more difficult. On the other hand, the resistance of pathogenic bacteria is increasing year by year under the pressure of continuous agent selection, the control effect of a single agent is greatly reduced, and the control of plant diseases is facing a major challenge

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