Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Establishment of Heading-back Pruning Severities of Trunk at Planting in the One-year-old 'Daeneung' Jujube Whip Nursery Tree

1년생 '대능' 대추 회초리 묘목 재식 시 주간 절단 정도 설정

  • Cho, Lee-Hyuk (Division of Life & Environmental Science (Horticulture), College of Natural and Life Sciences, Daegu University) ;
  • Sagong, Dong-Hoon (Division of Life & Environmental Science (Horticulture), College of Natural and Life Sciences, Daegu University)
  • 조이혁 (대구대학교 과학생명융합대학 생명환경학부 원예학전공) ;
  • 사공동훈 (대구대학교 과학생명융합대학 생명환경학부 원예학전공)
  • Received : 2021.03.02
  • Accepted : 2021.05.27
  • Published : 2021.06.30
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Abstract

BACKGROUND: The successful management of jujube trees depends on maintaining a balance between reproductive and vegetative growth. In general, heading cuts of trunk stimulate rather vegetative growth, but could decrease flower initiation. This study was conducted to establish a heading-back pruning severities at planting in the one year old 'Daeneung' jujube whip nursery tree by investigating vegetative growth and fruit yield. METHODS AND RESULTS: The heading back pruning severity was assigned as 5 different ranges as follow: one bud (TR-10, heading back pruning was 10 cm above the ground), three buds (TR-30), five buds (TR-50), seven buds (TR-70), and nine buds (TR-90) were left of scion. The number of buds on whip trunk was correlated to the central leader length and increment of trunk cross-sectional area, negatively, and to the tree height and canopy volume, positively. The yields in the TR-50 treatment were higher about 2 times than other treatments. The fruit diameter was not significantly different among the treatments. CONCLUSION: These results indicated that the optimum location of heading-back pruning in one year old 'Daeneung' jujube tree was 50 cm above the ground as evaluated by the balance of reproductive and vegetative growth.

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