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April 1, 2026ACTA AGRICULTURAE UNIVERSITATIS JIANGXIENSIS

Identification of pathogens causing rice spikelet rot disease in Jiangxi Province and their in vitro virulence assessment

Qiong Wu Xiaoyue Zhang Xuebin Wang Zibei Li Lianhu Zhang Yachun Lin Weigang Kuang Xiaotang Sun Ruqiang Cui

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Key Points

The aim is to identify the main pathogens causing rice spikelet rot disease and assess effective antifungal agents.
Collected rice spike samples from Jiangxi Province for pathogen isolation and identification.
Conducted Koch's postulates to confirm pathogenicity of isolated fungi.
Evaluated the antifungal efficacy of five agents on mycelial growth using mycelial growth rate method.
Identified major pathogens causing rice spikelet rot as Curvularia lunata and various Fusarium species. 45% mefenoxam showed high efficacy with an EC₅₀ of 0.001 μg/mL against all pathogens.
97% prochloraz and 200 g/L tebuconazole also demonstrated significant activity against Fusarium species, while 95% propiconazole and 80% mancozeb showed weaker efficacy.

Implication

Identifies pathogens and evaluates antifungal agents against rice spikelet rot disease, implying better disease management.

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Cite This Study

Wu et al. (2026) studied this question.

synapsesocial.com/papers/6a1295f648a0ea1665672666 https://doi.org/10.3724/aauj.2026091

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