Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Aspect of Incidence of the Major Citrus Diseases Recently

최근 주요 감귤 병의 발생 양상

  • Hyun, Jae-Wook (Citrus Research Station, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Yi, Pyoung-Ho (Citrus Research Station, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Hwang, Rok-Yeon (Citrus Research Station, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Moon, Kyung-Hwan (Agricultural Research Center for Climate Change, National Institute of Horticultural & Herbal Science, Rural Development Administration)
  • 현재욱 (국립원예특작과학원 감귤시험장) ;
  • 이평호 (국립원예특작과학원 감귤시험장) ;
  • 황록연 (국립원예특작과학원 감귤시험장) ;
  • 문경환 (국립원예특작과학원 온난화대응농업연구센터)
  • Received : 2013.04.08
  • Accepted : 2013.06.07
  • Published : 2013.06.30
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Abstract

The percent of diseased fruit by Diaporthe citri was the most 16.8% in 2010 and the least 3.8% in 2005, and the average was 8.8% from 2003 to 2012. The degrees of disease incidence were relatively high, 17.0, 22.6, 19.2 and 18.9%, in 2003, 2004, 2007 and 2010, respectively. The percent of diseased fruit by Elsinoe fawcettii was the most 0.72% in 2004, and then gradually decreased to 0.08% in 2008, and the average was from 0.28% from 2004 to 2011. In case of canker by Xanthomonas citri subsp. citri, the percent of diseased fruit was the most 2.19% in 2004, and gradually decreased to 0.08 and 0.10% in 2009 and 2010, respectively. The average was 0.81% from 2004 to 2012. The melanose by D. citri was most in south-east area of Jeju Island, and east and west in case of canker. The melanose symptoms were initially appeared from mid June, mainly peaked late of July to late August. The canker symptoms were initially produced on leaves of natsudaidai and grapefruit cultivated in open field middle of June in 2010 and 2011 and late of May in 2012. The scab disease was firstly appeared approx. early or mid May and then rapidly increased late of May to middle of June. The inoculum was mainly produced from dead twigs late June to early of August.

2003년도부터 감귤검은점무늬병에 걸린 과실율을 조사해 본 결과 2010년에 16.8%로써 가장 심하였으며 2005년에는 3.8%로써 가장 낮았고 10년간 평균 병든 과율은 8.8%이었다. 지역별로 최근 10년 동안 병든 과율을 비교해 보면 제주도 남동부, 동부지역에서 병 발생이 많았다. 또한 발병도를 조사해 본 결과 2003, 2004, 2007, 2010년 검은점무늬병 발병도가 각각 17.0, 22.6, 19.2, 18.9%로써 다른 해에 비하여 발병도가 높았다. 궤양병의 경우 2004년에 2.19% 발병하여 최근 들어 가장 많이 발생하였으며 그 이후로 급격히 줄어들어 2009년과 2010년의 경우 0.08와 0.10%이었지만, 2011년의 경우 1.50%로써 다시 증가하였으며 2004년부터 2012년까지 평균 발생율은 0.81%이었다. 또한 발생 지역도 제주도 동부와 서부지역에서 많았다. 더뎅이병의 경우 2004년부터 2012년까지 9년간 평균 발생과율은 0.25% 이었으며 2004년 0.72%로 가장 발생이 많았다. 감귤 과실에서의 검은점무늬병 진전 상황을 조사해 본 결과 해에 따라 약간씩 상이하지만 7월 하순부터 8월 하순까지 병 진전이 가장 많았다. 더뎅이병의 경우 5월 10일경에 첫 병징이 나타났으며 이후 5월 하순에서 6월 중순사이에 급격히 증가하였다. 궤양병의 경우 6월 중순경에 첫 병징이 나타나서 6월 하순까지 봄순에서 병이 진전되었다. 죽은 가지에서 검은점무늬병 전염원 주 발생 시기는 6월 하순부터 8월 상순경이었다.

Keywords

References

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