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  1. Asian Journal of Plant Pathology
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Asian Journal of Plant Pathology

Year: 2021 | Volume: 15 | Issue: 1 | Page No.: 14-22

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Authors


Supot  Matnork

Supot Matnork

LiveDNA: 66.35864

Tanapol Thitla

Country: Thailand

Naphatsawan Imaiam

Country: Thailand

Sarunya Nalumpang

Country: Thailand

Keywords


  • Potato
  • sclerotium rot disease
  • wood vinegar
  • Sclerotium rolfsii
  • fungicide
Research Article

In vitro Evaluation of Fungicides and Wood Vinegar to Control Sclerotium rolfsii Causing Potato Sclerotium Rot Disease

Supot Matnork Supot  Matnork's LiveDNA, Tanapol Thitla, Naphatsawan Imaiam and Sarunya Nalumpang
Background and Objective: Potato sclerotium rot disease causes a very high impact on the quality and quantity of potato production in Chiang Mai, Thailand. It has become a recurrent problem of potato production. The soil-borne pathogens of crop incited by Sclerotium rolfsii are very difficult to be managed because it produces sclerotia for the long-term survival in the soil. The objectives of this study were to identify pathogens and evaluate fungicides and wood vinegar for their efficacy against pathogens. Materials and Methods: The pathogens were identified based on morphology. The pathogenicity of fungal isolates was tested in the laboratory and compared with the non-treated control. Six fungicides and wood vinegar were tested by the poisoned medium technique, the analysis was arranged in a completely randomized design with 5 replicates of each treatment. Results: The fifteen fungal isolates were identified as S. rolfsii based on mycelial and sclerotial characters. A pathogenicity test was conducted in the laboratory, where the symptoms of rotten tissues and penetration of pathogens were observed. In vitro evaluation of fungicides and wood vinegar, found that the mycelial growth and sclerotial germination were completely inhibited by etridiazole+quintozene and mancozeb at recommended concentration and wood vinegar at 1% concentrations. Conclusion: The results revealed that S. rolfsii caused potato sclerotium rot disease in Northern, Thailand. The highly effective fungicide against S. rolfsii was etridiazole+quintozene and mancozeb. For the efficacy of wood vinegar, it can be decreased in vitro at 1% concentration onward.
Citation

How to cite this article

Supot Matnork, Tanapol Thitla, Naphatsawan Imaiam and Sarunya Nalumpang, 2021. In vitro Evaluation of Fungicides and Wood Vinegar to Control Sclerotium rolfsii Causing Potato Sclerotium Rot Disease. Asian Journal of Plant Pathology, 15: 14-22.

URL: https://scialert.net/abstract/?doi=ajppaj.2021.14.22

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