A method for preventing panax root rot based on a fungus-synthesized microbial community and application thereof

By constructing a bio-agent containing synthetic microbial communities of fungi such as Trichoderma and Phanerochaete concrescens, the problem of root rot in Panax notoginseng has been solved, achieving significant disease control effects and promoting plant growth and yield, which meets the requirements of green agriculture.

CN122168419APending Publication Date: 2026-06-09YUNNAN AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YUNNAN AGRICULTURAL UNIVERSITY
Filing Date
2026-01-29
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing chemical control methods for Panax notoginseng root rot have led to increased drug resistance in pathogens, imbalance in soil microecology, and unstable effects of single biological control, making it difficult to meet the needs of green agriculture.

Method used

A synthetic microbial community composed of four fungal strains—Trichoderma atroviride, Trichoderma hamatum, Trichoderma petersenii, Trichoderma neokoningii, and Phanerochaete concrescens—was prepared into a capsule-type biological agent. This agent was applied to the root zone before planting and after emergence of Panax notoginseng. It was mixed with organic materials and kept at suitable soil moisture and temperature to achieve synergistic antibacterial and growth-promoting effects.

Benefits of technology

It significantly reduces the incidence of root rot in Panax notoginseng to below 10.60%, increases Panax notoginseng yield by 6%, increases total saponin content by 20%, improves soil microecology, and leaves no chemical residues.

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Abstract

This invention discloses a method for controlling root rot of Panax notoginseng based on a fungal synthetic microbial community and its application, belonging to the field of plant disease biological control technology. The method involves screening six fungal strains from the rhizosphere soil of healthy Panax notoginseng plants that have survived for three years in continuously cropped fields. These strains exhibit highly efficient antagonistic activity (inhibition rate ≥70%) against three pathogens of the genus *Fusarium*. A synthetic microbial community containing *Trichoderma atroviride*, *Trichoderma hamatum*, *Trichoderma petersenii*, *Trichoderma neokoningii*, *Trichoderma virilente*, and *Phanerochaete concrescens* was constructed at a viable count ratio of 1:350:590:14:30:755, and prepared to a spore concentration of 10... 8 -10 9 Capsules containing 10⁸ CFU / g are used. Before planting, apply the fertilizer to the bottom of the planting hole. After emergence, apply the fertilizer using a fertilizer applicator within a 5cm radius around the roots, 20-30g per plant (based on 10⁸ CFU / g). Apply once a month from 4-6 months after emergence, for three consecutive applications. During the application period, maintain soil moisture at 60%-70% and a temperature of 13-20℃. This method can reduce the incidence of root rot in Panax notoginseng to below 10.60%, while increasing yield per plant by 6% and increasing total saponin content by ≥20%, combining prevention, growth promotion, and environmental safety.
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