Journal of Bio-Environment Control (생물환경조절학회지)

The Korean Society for Bio-Environment Control (한국생물환경조절학회)
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Proper Tree Vigor and Crop Load in High Density Planting System for 'Fuji'/M.9 Apple Trees

사과 '후지'/M.9 밀식 사과원의 성과기 적정 결실 및 수세 기준

  • Park, Moo-Yong (Apple Experiment Station, National Institute of Horticultural & Herbal Science, R.D.A.) ;
  • Park, Jeong-Kwan (Apple Experiment Station, National Institute of Horticultural & Herbal Science, R.D.A.) ;
  • Yang, Sang-Jin (Apple Experiment Station, National Institute of Horticultural & Herbal Science, R.D.A.) ;
  • Han, Hyun-Hee (Apple Experiment Station, National Institute of Horticultural & Herbal Science, R.D.A.) ;
  • Kang, In-Kyu (Dept. of Environmental Horticulture, Kyungpook National University) ;
  • Byun, Jae-Kyun (College of Natural Resources, Yeongnam University)
  • 박무용 (국립원예특작과학원 사과시험장) ;
  • 박정관 (국립원예특작과학원 사과시험장) ;
  • 양상진 (국립원예특작과학원 사과시험장) ;
  • 한현희 (국립원예특작과학원 사과시험장) ;
  • 강인규 (경북대학교 환경원예학과) ;
  • 변재균 (영남대학교 원예학과)
  • Published : 2008.12.31
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Abstract

Proper tree vigor and crop load were determined for 'Fuji'/M.9 apple trees in high density planting system from 2001 to 2003. Leaf/fruit ratio was highly correlated to mean fruit weight (y=1.715x+205.02, $R^2=0.66^{**}$) and yield (y=-35.l56x+5963.7, $R^2=0.44^{**}$). In addition, there was a significant correlation between the number of leaves per tree and mean fruit weight. However, crop load did not affect tree growth, soluble solids content of fruit, and Hunter a value. To harvest the fruits heavier than 300 g without biennial bearing, it was appropriate to crop 55 to 64 fruits in a tree with 55 leaves per fruit of adult tree. The good indices for proper tree vigor could be 20 to 25 cm of mean shoot length and above 95% of shoot termination rate. Moreover, no secondary growth and 20 to 30% of spur formation could be the indices for highly productive tree vigor.

본 연구는 2001년부터 2003년까지 '후지'/M.9가 재식된 밀식사과원에서 적정 수세와 적정 착과량을 조사하였다. 엽과비는 평균 과중(y=1.715x+205.02, $R^2=0.66^{**}$)과 수량(y=-35.156x+5963.7, $R^2=0.44^{**}$)에서 고도로 유의한 상관이 있는 것으로 나타났고, 주당엽수와 평균 과중 또한 상관이 있었다. 그러나 착과량에 따른 수체생육, 과실품질 요인중 당도 및 착색도에서는 처리간 차이가 없었다. 격년결실이 발생하지 않으면서 300g 이상의 과실을 생산하는 기준은 엽과비는 55 수준에서 착과량이 주당 약 $55{\sim}64$개의 수준이 적합하였다. '후지'/M.9 밀식재배시 성목기의 안정된 수세 기준은 평균 신초장이 $20{\sim}25cm$, 신초 정지율이 95% 이상수준을 보여야 되는 것으로 판단되며, 보다 세부적으로는 2차 생장이 거의 발생되지 않으며 과대지 비율은 적어도 $20{\sim}30%$ 정도 되어야 할 것으로 판단되었다.

Keywords

References

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