Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지
DOI QR코드

DOI QR Code

Yields and Fruit Quality of Different Aged Walnut Trees (Juglans sinensis Dode) Derived from Seedlings in Gimcheon

김천지역 실생묘 유래 호두나무의 수령별 수확량 및 과실 품질

  • Oh, Sung-Il (Division of Forest Special Products, National Institute of Forest Science) ;
  • Lee, Uk (Division of Forest Special Products, National Institute of Forest Science) ;
  • Kim, Chul-Woo (Division of Forest Special Products, National Institute of Forest Science)
  • 오성일 (국립산림과학원 산림소득자원연구과) ;
  • 이욱 (국립산림과학원 산림소득자원연구과) ;
  • 김철우 (국립산림과학원 산림소득자원연구과)
  • Received : 2020.05.21
  • Accepted : 2020.06.08
  • Published : 2020.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study was conducted on cultivation farms in the Gimcheon area, which is the main production area of walnuts, in order to compare and analyze the yield and fruit quality of walnut trees (Juglans sinensis Dode) derived from seedlings. The official trees were classified into nine classes from 10 to 60 years old, and a total of 135 trees were selected, with 15 trees selected for each grade. The growth and fruit characteristics for each age group were then examined. The average tree height was 10.3 m, and the average crown area was 63.7 ㎡. The average number of fruit settings per tree was 573.1, with the largest number of walnuts per tree at 35 years (974.0 walnuts), and the lowest walnuts per tree at 10 years (124.7 walnuts). In addition, the number of fruit settings per bearing mother branch in 35 year old trees was the highest at 3.1. The average weight for each fruit type was found to be 58.7 ± 4.0 g of walnuts in green peel, 10.5 ± 0.5 g of dried shell walnuts, and 4.9 ± 0.2 g of walnuts, respectively. The average yield by fruit type was 32.5 ± 13.8 kg of walnuts in green peel, 5.9 ± 2.5 kg of dried shell walnut, and 2.8 ± 1.2 kg of walnuts. The yield was positively correlated with the crown area, the number of fruits setting per bearing mother branch, and the number of fruits setting per 1 ㎥. The formula used to estimate the yield per tree by age was calculated as y = 8993.9 ln (tree age-9) 8230.3, R2 = 0.8531 (walnut in green peel) and y = 1647.1 ln (tree age-9) 1442.1, R2 = 0.8527 (dried shell walnut).

본 연구는 실생묘 유래 호두나무의 수령별 수확량 산정과 과실 품질을 비교, 분석하기 위해 호두 주산지인 김천지역의 재배임가를 대상으로 실시되었다. 공시목은 10년생부터 60년생까지 9등급으로 구분하였으며, 각 등급별 15본을 선정하여 총 135본이다. 수령별 생육특성을 조사한 결과, 평균 수고는 10.3 m, 평균 수관면적은 63.7 ㎡으로 나타났다. 수령별 결실특성을 조사한 결과, 본당 착과수는 평균 573.1개이며, 35년생 호두나무가 974.0개로 가장 많은 반면 10년생 호두나무가 124.7개로 가장 적은 것으로 조사되었다. 또한 결과모지당 착과수는 35년생 호두나무가 3.1개로 가장 많은 것으로 나타났다. 수령별 과실특성을 조사한 결과, 과실 유형별 평균 무게는 각각 청피호두 58.7±4.0 g, 알호두 10.5±0.5 g, 인 4.9±0.2 g인 것으로 조사되었다. 과실 유형별 평균 수확량은 청피호두 32.5±13.8 kg, 알호두 5.9±2.5 kg, 인 2.8±1.2 kg이었으며, 수관면적, 결과모지당 착과수, 1 ㎥당 착과수 등과 정의상관관계를 보였다. 실생묘 유래 호두나무의 수령에 따른 본당 수확량 추정식은 청피호두의 경우 y=8993.9·ln(수령-9)+8230.3, R2=0.8531와 알호두 y=1647.1·ln(수령-9)+1442.1, R2=0.8527로 산출하였다.

Keywords

References

  1. Cripps, K.E.L., Melville, F. and Nicol, H.I. 1975. The relationship of Granny Smith apple tree growth and early cropping to planting density and rectangularity. Journal of Horticultural Science 50(4): 291-299. https://doi.org/10.1080/00221589.1975.11514638
  2. Claytion-Greene, K.A. 1993. Influence of orchard management system on yield, quality and vegetative characteristics of apple trees. Journal of Horticultural Science 68(3): 365-369. https://doi.org/10.1080/00221589.1993.11516364
  3. Costa, G., Beltrame, E., Eccher, P. and Pianezzola, A. 1996. High density planted apple orchards: Effects on yield, performance and fruit quality. Acta Horticulturae 451: 505-512. https://doi.org/10.17660/actahortic.1997.451.58
  4. Cho, K.H. and Yoon, T.M. 2006. Fruit quality, yield, and profitability of 'Hongro' apple as affected by crop load. Korean Journal of Horticultural Science and Technology 24(2): 210-215.
  5. Chio, S.W., Sagong, D.H. Song, Y.Y. and Yoon, T.M. 2009. Optimum crop load of 'Fuji'/M.9 young apple trees. Korean Journal of Horticultural Science and Technology 27(4): 547-553.
  6. Erf, J.A. and Proctor, J.T.A. 1987. Changes in apple leaf water status and vegetative growth as influenced by crop load. Journal of the American Society for Horticultural Science 112(4): 617-620.
  7. Forshey, C.G. and Elfving, D.A. 1989. The reationship between vegetative growth and fruiting in apple. Horticultural Reviews 11: 229-287.
  8. Guak, S., Kim, E.J., Kook, J.R. and Choi, D.G. 2009. MaxCel as a postbloom thinner for 'Hongro' and 'Fuji' apples. Horticulture, Environment, and Biotechnology 50: 181-187.
  9. Hwang, S.I., Lee, M.H., Lee, B.S. and Yi, J.S. 2002. Effects of scion collection time and grafting treatments on the survival of epicotyl grafts in walnut. Korean Journal of Breeding Science 34(3): 517-522.
  10. Hwang, S.I., Cho, K.J., Lee, M.H., Yi, J.S., Lee, B.S. and Lee, U. 2004. Genetic relations and identification of genus Juglans using I-SSR makers. Journal of Korean Forest Society 93(7): 417-422.
  11. Kim, M.J., Lee, U., Hwang, M.S., Kim, S.C. and Lee, M.H. 2003. Blooming, fuctification and nut characteristics of chestnut cultivars cultivated in Korea. Journal of Korean Forest Society 92(4): 321-332.
  12. Kim, M.B., Rhew, C.H. and Kim, Y.J. 2015. A study on impact analysis of crop insurance program on agricultural production. KREI. Naju-si, Korea. pp. 49-65.
  13. Kim, M.B., Kim, T.H. and Ha, I.H. 2019. Ways to advance the agricultural insurance policy amid changes in agricultural conditions. KREI. Naju-si, Korea. pp. 72.
  14. KFS. 2019. Statistical yearbook of forestry. KFS. Daejeon, Korea. pp. 288.
  15. Lee, U., Lee, M.H., Hwang, S.I. and Byun, K.O. 2007. Nut characteristics of walnut hybrids (Juglans spp.). Korean Journal of Plant Resources 20(1): 63-68.
  16. Manning, W.E. 1987. The classification with in juglandaceae. Annals Missouri Botanical Garden 65(4): 1058-1087. https://doi.org/10.2307/2398782
  17. Park, Y.K., Kim, J.H. and Kim, S.H. 2017. New varieties and cultivation technology in walnut trees. NIFOS., Seoul, Korea. pp. 5.
  18. Park, Y.K. et al. 2018. Breeding and cultivation technology development for forest fruits. NIFOS., Seoul, Korea. pp. 21.
  19. Roh, Y.S. 2019. Analysis of agricultural insurance subsidy effects on insured acre. Seoul, Seoul National University.
  20. Sansavini, S., Marangoni, B., Buscaroli, C., Corelli, L. and Tazzari, G. 1986. The relationship between spacing and rootstock effects in an intensive planting trial of two apple cultivars. Acta Horticulturae 160: 23-37. https://doi.org/10.17660/actahortic.1986.160.2
  21. Wertheim, S.J. 1985. Productivity and fruit quality of apple in single-row and full-field planting systems. Scientia Horticulturae 26: 191-208. https://doi.org/10.1016/0304-4238(85)90106-2