Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Frost Damage of Mulberry Tree according to Topographic Characteristics in Buan Province

부안지역에서 지형적 특성에 따른 뽕나무의 늦서리 피해

  • Jeon, Kyung-Soo (Department of Environmental Landscape Architecture, Wonkwang University) ;
  • Kim, Ho-Cheol (Division of Horticulture and Pet Animal-Plant Science, Wonkwang University) ;
  • Bae, Hyun-Ju (Division of Horticulture and Pet Animal-Plant Science, Wonkwang University) ;
  • Bae, Kang-Soon (Division of Horticulture and Pet Animal-Plant Science, Wonkwang University) ;
  • Kim, Tae-Choon (Division of Horticulture and Pet Animal-Plant Science, Wonkwang University)
  • 전경수 (원광대학교 환경조경학과) ;
  • 김호철 (원광대학교 원예.애완동식물학부) ;
  • 배현주 (원광대학교 원예.애완동식물학부) ;
  • 배강순 (원광대학교 원예.애완동식물학부) ;
  • 김태춘 (원광대학교 원예.애완동식물학부)
  • Received : 2011.03.07
  • Accepted : 2011.03.17
  • Published : 2011.03.31
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Abstract

This research was carried out to investigate frost damage of mulberry tree (Morus alba) according to topographic characteristics in Buan province. The first bud-break, leafing, blooming and harvest date of mulberry tree in 2010 were two, four, fourteen and eight days later than those in 2009, respectively. These results were that daily mean temperature during March and April in 2010 were lower than those in 2009 by $2.3^{\circ}C$ and $2.4^{\circ}C$. Frost damage of orchards at flat-bottomed valley, flat near hill and lake, and plain were 50.0%,12.0%, and 4.2%, respectively. Also, frost damage of branch of below 15 mm in diameter was serious than that of branch over 16 mm, but orchard at flat-bottomed valley was high as the range of 46.2~54.0%. These results in 2010 were caused by occurrence of below zero temperatures in leafing stage. Since then, many shoots came out at accessary bud on proximal and the top part of the branches. Therefore, frost damage of mulberry tree in Buan province in 2010 was caused by occurrence of below zero temperatures on April and topographic characteristics of orchard.

본 연구는 전북 부안군에서 재배되고 있는 뽕나무를 대상으로 지형적 특성에 따른 늦서리 피해를 조사하였다. 2009년에 비해 2010년에 뽕나무의 발아시는 2일, 전엽시는 4일, 개화시는 14일, 그리고 수확시는 8일이 늦었는데 이는 3월 일평균기온은 $2.3^{\circ}C$, 4월 일평균기온은 $2.4^{\circ}C$ 낮았기 때문으로 생각된다. 2010년 서리 피해는 평탄곡간지의 과원에서 50.0%, 구릉지 및 호수 인근 평탄지에서 12.0%, 평야지에서는 4.2%였다. 결과지 굵기에 따라서는 15mm 이하의 가지에서 16mm 이상의 가지에 비해 높은 경향이었고, 평탄곡간지의 과원에서는 가지 굵기와 상관없이 46.2~54.0%로 이주 높았다. 이러한 높은 서리 피해는 뽕나무의 전엽기에 기온이 영하로 내려갔기 때문이었다. 그리고 이후 서리 피해를 입은 가지 기부 및 선단부의 덧눈에서 신초가 다수 발생하였다. 따라서 2010년 부안군 내 뽕나무의 늦서리 피해는 4월 중 영하의 기온 발생과 과원의 지형적 특성에서 기인된 것으로 생각된다.

Keywords

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