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Abstract

This study aimed to apply a new bioproduct containing beneficial microorganisms as biocontrol to the yellow leaf and root rot disease of coffee plants in Vietnam caused by pathogenic nematodes (Meloidogyne spp., Pratylenchus spp) and fungi (Fusarium oxysporum, Fusarium solani, Rhizoctonia solani, Rhizoctonia bataticola) and focused on evaluating the synergistic effect of nematophagous fungi and antagonistic microorganisms to control the pathogens. The results showed that the population of parasitic nematodes in the coffee-growing soil was reduced by 69.82% when treated with both nematophagous fungi and antagonistic microorganisms, compared to 61% and 67.24% when treated with nematophagous fungi or with antagonistic microorganisms alone. The reduction of the F. oxysporum population was 76.44% when both nematophagous fungi and antagonistic microorganisms were used, compared to 52.17% and 75.53% when treated with nematophagous fungi or with antagonistic microorganisms after 6 months. By using the new bioproduct, the reduction of coffee plant-parasitic nematodes, pathogen fungi, and the rate of the diseased coffee plant was 77.16%, 78.04%, and 79.08% for the coffee plant at the young stage, and 78.12%, 79.26%, and 78.48% for the coffee plant at the maturity stage after 270 days of application. Field demonstrations on the application of new bioproducts showed a disease reduction of 82.3% compared to farmer practices and brought a benefit of 9,400,000 VND/ha, equivalent to an income increase of 21.7% for the farmer. This new bioproduct can be applied to control the yellow leaf and root rot disease complex of coffee plants caused by Pratylenchus spp. and F. oxysporum in Taynguyen.

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How to Cite
Đào Hữu Hiền, Pham Van Toan, Nguyen Thị Hồng Minh, & Ho Hanh. (2026). Synergistic effect of nematophagous fungi and antagonistic microorganisms to control the pathogen caused yellow leaf and root rot disease of coffee in Taynguyen. E-Journal of Agricultural Science and Technology, 10(3), 5723–5736. https://doi.org/10.46826/huaf-jasat.v10n3y2026.1289
Section
PLANTS - CROP SCIENCES

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