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전정방법에 따른 "홍이슬" 포도나무의 생장과 과실품질에 미치는 영향
김병삼 ( Byeong Sam Kim ),조경철 ( Kyung Chul Cho ),마경철 ( Kyung Chul Ma ),윤봉기 ( Bong Ki Yun ),정석규 ( Seok Kyu Jung ),이경아 ( Kyung A Lee ),최현석 ( Hyun Sug Choi ) 한국국제농업개발학회 2015 韓國國際農業開發學會誌 Vol.27 No.2
The study was investigated how the pruning methods affected growth, and fruit quality and production of ‘Hongisul’ grape (Vitis vinifera L.) trees in years 2012 and 2013. Four pruning treatments included; short pruning, half-short pruning, short + long pruning, and short pruning+long bending. Short pruning+long bending treatment mostly increased number of current year’s shoot, with reduction of number of non-bearing shoots and increase of fruiting while short pruning reduced number of shoot, increased length of shoot and number of non-bearing shoots. Fruit yield was the highest on short pruning + long bending. Fruit characteristics of cluster and berry were not significantly affected by pruning methods. Fruit SSC and SSC/acidity ratio were increased by short pruning + long bending. Fruit surface color of a*, representing for redness, was improved by short pruning + long bending. Anthocyanin contents on fruit peel were the lowest by short pruning. Fruit gross production was the highest on short pruning + long bending, with the lowest observed for short + long pruning.
원황’ 배의 착과량 조절이 과실생산성과 내한성에 미치는 영향
김병삼(Byeong-Sam Kim),조경철(Kyung-Chul Cho),마경철(Kyung-Chul Ma),윤봉기(Bong-Ki Yun),정석규(Seok-Kyu Jung),최현석(Hyun-Sug Choi) (사)한국생물환경조절학회 2017 시설원예‧식물공장 Vol.26 No.2
‘원황’ 배(Pyrus pyrifolia Nakai)나무에 착과수준을 주당 54개(60%착과), 90개[100%착과구(관행)], 126개(140%착과)로 조절 하였을 때 가지의 생장, 저장양분 및 과실생산과 익년에 삽수의 생장에 미치는 영향을 조사하기 위하여 2년간 수행되었다. 주당 착과량이 증가하면 도장지 생장이 감소하였고 1년생 가지의 탄수화물과 다량 무기원소 및 유리당 농도가 감소하는 경향이 나타났다. 관행 대비 140% 착과처리구는 두 해 모두 수량이 약 35톤으로 가장 높았지만 평균과중과 과실 크기 및 과육당도는 다소 낮은 수준이었다. 하지만 140% 착과처리구는 60%와 100% 착과 처리구 보다 년간 천만원 이상의 소득증대가 관찰되었다. -20℃ 처리에서 삽수의 발아율은 뚜렷한 감소가 나타나지 않았고, -30℃에서는 140% 착과처리구에서 70% 이하로 감소되었다. 저온에서 삽수의 전해질 누출률은 적과수준에 따라서 크게 차이는 없었다. The study was performed on the effects of crop load of pear (Pyrus pyrifolia Nakai) trees on shoot growth, reserved nutrients, and fruit production for two years, as well as regrowth of cuttings treated with various cold temperatures in 2012 and 2013. Crop load adjustments included three levels of fruiting; 54 (60%), 90 (100%), and 126 fruits per tree (140%). As increasing crop load from 60% to 140%, water sprout growth decreased, and one-year old shoot resulted in declined concentrations of total carbon, macro-nutrients, and free sugar. The 140% of crop load greatly increased fruit yield of approximately 35 tons per ha in both 2011 and 2012 but slightly reduced weight, size, and soluble solid contents in fruit. However, 140% of crop load increased annual production income to approximately over 10 million won compared to the 60% and 100% of crop load. Germination rates in the cuttings did not rapidly decrease up to -20℃ in a growth chamber condition. The 140% of crop load decreased germination rates less than 70% of cuttings grown under -30℃. Amounts of electrolyte leakage in the cuttings under various cold temperatures were not significantly different among the adjustment of crop load.