An Analysis of the Bacterial Diseases Outbreak on Apple and Asian Pear in Gangwon State in 2021－2023

Heon-Seop Won; Youn-Gi Moon; Gwang-Jae Lee; Jae-Hong Lee; Se-jeong Hwang; Sung-Hee Kang; Seung-Min Ham; Sun-Joo Lee; Seung-Jae Lee; Duck-Hwan Park

doi:10.22698/jales.20250003

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2025 Vol.37, Issue 1 Preview Page Next Page

Research Article

An Analysis of the Bacterial Diseases Outbreak on Apple and Asian Pear in Gangwon State in 2021－2023

31 March 2025. pp. 26-34

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Abstract

This study conducted a comprehensive analysis of the temporal and regional characteristics of fire blight (Erwinia amylovora) and black shoot blight (Erwinia pyrifoliae) outbreaks in Gangwon State from 2021 to 2023. Fire blight was first observed in Wonju, Pyeongchang, and Yeongwol in 2021. The introduction of infected seedlings was identified as a major factor contributing to the spread in Yeongwol, while in Pyeongchang and Wonju, climatic conditions, such as temperature and humidity, were found to significantly promote the outbreaks. In 2022, fire blight occurred in Wonju, Pyeongchang, and Hongcheon, where the first recorded simultaneous occurrence of fire blight and black shoot blight was observed, complicating disease control measures. In 2023, new fire blight cases were reported in Jeongseon and Yanggu, with young trees in Yanggu exhibiting increased susceptibility, leading to concentrated infections. The rapid growth of shoots and flowers facilitated pathogen spread, resulting in a rapid escalation of disease incidence. Black shoot blight was first detected in Wonju and Chuncheon in 2021, with unsanitary use of farm tools identified as the primary factor for disease spread. In 2022, additional cases were reported in Yeongwol and Chuncheon; however, the disease remained confined to isolated orchards, particularly in Chuncheon, where no further spread to surrounding orchards was observed. In 2023, black shoot blight emerged in Hwacheon, where inadequate orchard management and lack of farmer education accelerated the spread of the disease. This study provides crucial information for understanding the occurrence and influencing factors of fire blight outbreaks in Gangwon State. Establishing preventive measures, continuous pattern analysis, and proactive surveillance are essential to mitigate the spread of bacterial diseases in orchards.

Keywords

Black shoot blight

Fire blight

Regional characteristics

Seedling

Simultaneous occurrence

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Information

Publisher :Agriculture and Life Sciences Research Institute, Kangwon National University
Publisher(Ko) :강원대학교 농업생명과학대학 농업생명과학연구원
Journal Title :Journal of Agricultural, Life and Environmental Sciences
Journal Title(Ko) :농업생명환경연구
Volume : 37
No :1
Pages :26-34
Received Date : 2025-01-25
Revised Date : 2025-02-20
Accepted Date : 2025-02-27
DOI :https://doi.org/10.22698/jales.20250003

Journal of Agricultural, Life and Environmental Sciences ISSN:2233-8322(Print) 2508-870X(Online) 농업생명환경연구

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