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감자 분무경 양액재배 시 베드 내 녹화처리가 괴경 수량 및 부패율에 미치는 영향
강형식(Hyoung Shick Kang),김성용(Sung Ryong Kim),현관희(Kwan Hee Hyu),이한권(Han Gweon Lee),강영길(Young Kil Kang) 한국원예학회 2005 원예과학기술지 Vol.23 No.4
This study was carried out to establish the optimum greening method in beds of a aeroponics system for seed potato (Solanum tuberosum L.) production in order to decrease rotten tubers in beds and after the storage. When nutrient solution was supplied during greening period 5, 10 and 15 days, tuber yield did not decrease by greening of five days in the beds before the second harvest, but significantly decreased by the greening of more than ten days regardless of growing season. When nutrient solution was not supplied for the greening period, tuber yield decreased by greening of more than five days in the beds. Tuber rotten rate at the second harvest was 4.3% in spring culture and 3.2% in autumn culture in the non-greening control plots, but decreased to less than 2.0% by the greening regardless of nutrient solution supply and growing season. Tuber rotten rate after six weeks of storage was 2.0% in spring culture and 2.7% in autumn culture in the non-greening control plots, but reduced to less than 0.8% in greening plots. These data indicate that greening for five days of nutrient solution supply in the beds can reduce tuber rotten rate without reducing tuber yield.
육묘방법이 분무경 양액재배 감자의 생육 및 수량에 미치는 영향
강형식(Hyoung Shick Kang),현관희(Kwan Hee Hyun),이한권(Han Gweon Lee),강영길(Young Kil Kang) 한국원예학회 2006 원예과학기술지 Vol.24 No.1
This study was carried out to find out the best methods of raising transplants and to evaluate the possibility of reducing incidence of basal stem rot caused by Pythium myriotylum and of easiness for seed tuber production of potatoes (Solanum tubersum L.) grown in aeroponics system. Incidence of basal stem rot, growth and yield of transplants raised from stem cutting, non-rooted cutting, non-rooted cutting with a wick, deep flow rooted cutting, and rooted mini tuber were evaluated in a spring season of 2002. Potato basal stem rot occurred 11% in transplants raised from stem cutting but did not occur in the other transplants. Stem length averaged about 60.0 ㎝ except for transplants raised from stem cutting with 48.3 ㎝. Transplants raised from deep flow rooted cutting had the heaviest root dry weight, 33.2 g per plant, followed by those from rooted mini tuber. The number of first stolons per plant was greatest as twelve stolons for transplants raised from deep flow stem cutting and rooted mini tuber. Transplants raised from deep flow stem cutting had 773 total tubers and 491 tubers over 5 g per ㎡, which is the greatest among the treatments. Transplants raised from rooted mini tuber was ranked second for the number of total tubers and tubers over 5 g. Transplants raised from stem cutting produced fewest tubers over 5 g, that is 255 tubers per ㎡, but the highest number of tubers weighing 5 g or less, that is 365 tubers per ㎡. These results indicate that raising transplants from deep flow stem cutting could be best considering basal stem rot incidence and tuber yield of potatoes grown in aeroponics system.