A synergistic composite biological fungicide for preventing and treating cranberry fruit rot and application thereof

By combining *Pseudomonas syringae* with difenoconazole, a synergistic compound biological fungicide is provided, which solves the problem of controlling cranberry fruit rot and achieves efficient, safe and stable disease control.

CN122397757APending Publication Date: 2026-07-17HEILONGJIANG ACAD OF SCI INST OF NATURAL RESOURCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEILONGJIANG ACAD OF SCI INST OF NATURAL RESOURCES
Filing Date
2026-04-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies for controlling cranberry fruit rot present several problems, including high environmental and safety risks, narrow fungicidal spectrum, unstable biological control effects, and a lack of comprehensive solutions that achieve synergistic effects.

Method used

A scientific combination of Pseudomonas syringae and difenoconazole has been developed into a synergistic compound biological fungicide for the prevention and control of cranberry fruit rot. Combining chemical and biological mechanisms, it achieves rapid control and long-term inhibition.

Benefits of technology

It significantly improves the prevention and control effect, reaching over 75%, broadly inhibits multiple pathogens, delays the development of resistance, reduces the amount of chemical fungicides used, reduces residues, and has both rapid and long-lasting effects.

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Abstract

The application discloses a synergistic composite biological fungicide for preventing and treating cranberry fruit rot and application thereof, and belongs to the technical field of biological prevention preparations. Pseudomonas syringae and benzene ether carbendazol are scientifically compounded, the action mechanisms of the two are completely different, and the two complement each other. Field tests prove that the prevention and treatment effect of the composition on cranberry fruit rot is significantly higher than that of the single use of two single agents, and is also superior to mainstream chemical agents (such as azoxystrobin and mancozeb) on the market at present, and the composition shows obvious synergistic effect. The actually measured prevention and treatment effect can reach more than 75%, and the composition can effectively control the occurrence of diseases.
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