Compound bactericide for preventing and treating fusarium head blight

A technology of compounding fungicides and auxiliaries, applied in the direction of fungicides, biocides, biocides, etc., can solve the problems of failure of control, ineffective control, high level of drug resistance and high proportion of resistant strains, etc., to achieve quick effect Good, low cost, easy processing effect

Inactive Publication Date: 2012-12-26
ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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AI Technical Summary

Problems solved by technology

There are two main reasons for the occurrence and prevalence of wheat scab disease: one is that the climatic conditions are suitable for the spread of pathogenic bacteria; the other is the resistance level and resistance of wheat scab to the leading control agent carbendazim The proportion of strains is high, carbendazim and the compound preparation (polyketone) with carbendazim as the main component cannot effectively control the disease under normal dosage (level), and the control fails in some areas

Method used

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  • Compound bactericide for preventing and treating fusarium head blight
  • Compound bactericide for preventing and treating fusarium head blight

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Experimental program
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Effect test

Embodiment

[0012] Hexaconazole and prochloraz compound bactericide of the present invention are as follows to the indoor activity determination of wheat head blight:

[0013] The original drug of hexaconazole was dissolved in methanol and the original drug of prochloraz in acetone to form a 1000 μg / mL mother solution, and 1% Tween-80 was added. A series of single-dose medicinal solutions with concentrations of 200, 100, 20, 10, 2, 1, 0.2, and 0.1 μg / mL were prepared with sterile water, and placed in a triangular flask for later use. Prochloraz and hexaconazole were prepared into a series of test solutions of 1:1, 2:1, 3:1, 4:1 and 5:1 mixtures according to the effective content, and placed in the Erlenmeyer flask for later use. Take 1 mL of the above-mentioned series of diluted drugs and mix them with 9 mL of medium (PDA) in a petri dish, and make the drug content in the petri dish to be 20, 10, 2, 1, 0.2, 0.1, 0.02 and 0.01 μg / mL of PDA medium, use sterile water as a blank control. T...

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Abstract

The invention provides a compound bactericide of prochloraz and hexaconazole. The compound preparation has no cross resistance with current major medicaments, i.e., carbendazim and triadimefon for preventing and treating the fusarium head blight of wheat, and can be used for effectively treating the pesticide resistance of the fusarium head blight of the wheat to the carbendazim and the triadimefon. The invention provides an optimal synergistic proportion range between the two medicaments and a processing process of the compound preparation. The compound preparation has the advantages of wide bactericidal spectrum, high systemic property, good quick response and long lasting period. A field test result proves that the compound preparation has an extremely obvious prevention and treatment effect on the fusarium head blight of the wheat and low cost compared with a single dose.

Description

field of invention [0001] The invention relates to a fungicide and a method for preventing and controlling diseases thereof, more specifically to a compound fungicide of hexaconazole and prochloraz and its application. Background technique [0002] Wheat head blight caused by the plant pathogenic fungus Gibberella zeae is the main disease of wheat heading stage. In 2012, the scab on most of the wheat in Jiangsu, Zhejiang and Anhui provinces (Yellow-Huaihe wheat region) was extremely severe, and the disease became prevalent, resulting in the failure of wheat harvest in some areas, and the average yield per mu in the Huanghuai region was reduced by 15%. There are two main reasons for the occurrence and prevalence of wheat scab disease: one is that the climatic conditions are suitable for the spread of pathogenic bacteria; the other is the resistance level and resistance of wheat scab to the leading control agent carbendazim The proportion of strains is high, and the normal do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/38A01N43/653A01P3/00
Inventor 杨敬辉吉沐祥陈宏州庄义庆
Owner ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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