The Plant Pathology Journal

한국식물병리학회 (The Korean Society of Plant Pathology)
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The Control Efficacy of Sodium Hypochlorite against Violet Root Rot Caused by Helicobasidium mompa in Apple

  • Lee, Sung-Hee (Bureau of Research & Development, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Shin, Hyunman (Bureau of Research & Development, Chungcheongbuk-do Agricultural Research and Extension Services) ;
  • Lee, Hyok-In (Animal and Plant Quarantine Agency) ;
  • Lee, Seonghee (Horticultural Science Department, Gulf Coast Research and Education Center, Institute of Food and Agriculture Science, University of Florida)
  • 투고 : 2022.04.14
  • 심사 : 2022.08.25
  • 발행 : 2022.10.01
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초록

Our study was carried out to determine the control efficacy of sodium hypochlorite (NaOCl) for violet root rot caused by Helicobasidium mompa in apple. The experiment was conducted in the farm located at Chungbuk province in South Korea from 2014 to 2016. When infected apple trees were treated at least two or three times with 31.25 and 62.5 ml/l available chlorine content in NaOCl, it greatly increased the rooting of rootstock, and restored the tree crown density by 44.4-60.5%. In addition, the number of commercial fruit setting was increased by 54.3-64.5%, and the total starch content in shoots was significantly higher than other non-treated apple trees. However, the untreated disease control and thiophanate-methyl WP treated trees showed the symptom of dieback. Therefore, our results indicate that the drenching treatment of NaOCl with 31.25-62.5 ml/l available chlorine content more than two times from late fall to early spring could effectively control the violet root rot and recover tree vigor up to 60%.

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과제정보

This work was carried out with the support of Chungcheongbuk-do Agricultural Research and Extension Services (Project No. LP0035762017), funded by Government of Chungcheongbuk-do, Republic of Korea. We extend our special thanks to Dr. Moon-Soo, Hwang for the grammatical editing of this manuscript.

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