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강원지역 여주 노지재배 시 정식시기가 생육 및 수량에 미치는 영향
서현택 ( Seo H. T. ),김영진 ( Y. J. Kim ),장은하 ( E. H. Jang ),원재희 ( J. H. Won ),강호민 ( H. M. Kang ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2016 강원 농업생명환경연구 Vol.28 No.3
This study was conducted to examine effects of planting date on the growth and yield of bitter gourd (Momordica charantia L.) under open field condition in Gangwon area. All seedlings of bitter gourd were separately transplanted during the early-May, the mid-May, the late-May and the early-June at, 2015. The training method of all plants was made with four lateral stems after pinching the main stem. Bitter gourd of planted at the early-May and the mid-May had significantly higher than other treatments in the main stem length, number of leaves, leaf area index and number of fruit set. However, the length, diameter and weight of fruit had no significant difference among all treatments. The application of planting date was effective in increasing the number of fruit set, number of harvested fruit and yield. The treatment of planted in mid-May had the highest marketable yield (3,812 kg/10 a), and follow the early-May (3,697.7 kg/10 a) and the lated-May (3,697.7 kg/10 a), the early-June (3,697.7 kg/10 a) was higher in the order. The number of harvested fruit also showed a similar trend. Therefore, planting date of bitter gourd in mid-May was effective in increasing yield of fruit under open field condition in Gangwon area.
아스파라거스 입경 시 줄기유인 처리가 순 품질 및 수량에 미치는 영향
서현택 ( Seo H. T. ),김영진 ( Y. J. Kim ),장은하 ( E. H. Jang ),원재희 ( J. H. Won ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2017 강원 농업생명환경연구 Vol.29 No.2
This study examined the effects of mother stem training on spear quality and yield of asparagus (Asparagus officinalis L.) in the greenhouse. The training was performed with the “mother stem bending method” (Sakamoto et al., 2011). No significant differences were found in the diameter, soluble solid content, firmness, and index of spear tightness of asparagus spears between the untreated group and the mother stem training treatment group. However, the mother stem training method was effective in improving the spear color quality owing to the increase in incident light intensity. On the other hand, the mother stem training treatment resulted in a decrease in the fresh weight of the spear, marketable yield, and marketable yield ratio of the LL (over 33 g) spear size when compared to that of the untreated group. The cause of this decrease in summer yield in the treated group was hypothesized to be a failure in nutrient translocation and low light interception in close proximity to the other stems.
아스파라거스 순 품질에 미치는 강원 영서지역 봄철 환경 요인들의 영향
서현택 ( H. T. Seo ),김영진 ( Y. J. Kim ),장은하 ( E. H. Jang ),원재희 ( J. H. Won ),강호민 ( H. M. Kang ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2016 강원 농업생명환경연구 Vol.28 No.2
Recently, asparagus (Asparagus officinalis L.) has become a popular vegetable in republic of Korea. So the greenhouse cultivated area of asparagus has increased by more than 100 ha. In particular, the cultivated areas (chuncheon and yanggu) in western Gangwon province were increase rapidly. But we have problem of standardization of spear quality during spring harvest of asparagus because of the last cold snap. This study was conducted to investigate correlation between environmental factors (temperature, lowest air temp., ground temp., RH and solar radiation) and spear quality, whereby, to provide basic information of growing conditions of standardized asparagus for export. Correlations between environmental factors for 3 days before harvest date and fresh weight, SSC, firmness were no significant correlation. On the other hand, the mean lowest air temperature for 3 days before harvest date was strongly affecting red color intensity (a) on top of spear due to significant at its correlation coefficient (-0.838**). As a result, when the mean lowest air temperature during 3 days before harvest date is decreased by 1℃, it showed that red color intensity (a) on top of spear increases 1.35 unit.
아스파라거스 비가림 재배 시 1차 수확기간이 2차 수확시기 및 수량에 미치는 영향
서현택 ( Seo H. T. ),김영진 ( Y. J. Kim ),장은하 ( E. H. Jang ),원재희 ( J. H. Won ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2018 강원 농업생명환경연구 Vol.30 No.2
This study was carried out to investigate the effects of the first harvest period on the timing and yield of the second harvest of asparagus (Asparagus officinalis L.) under greenhouse conditions. A comparing between the first harvest and second harvest yields according to the fern growth timing suggested that the shorter the first harvest period, the more rapidly the second harvest could be undertaken after the first harvest. It was subsequently possible to begin the second harvest after the mother fern had experienced growth for 20-30 days. The first harvest yield of ‘treatment first harvested for 2 weeks’ was the lowest at 294 kg/10a, whereas the second harvest yield was the highest at 1,336 kg/10a. The first harvest yield of ‘treatment first harvested for 8 weeks’ was the highest at 795 kg/10a.
광조건 및 저온습윤처리가 몇 가지 산채 종자발아에 미치는 영향
서현택 ( Seo H. T. ),최병곤 ( B. K. Choi ),문윤기 ( Y. G. Moon ),김세원 ( S. W. Kim ),박기덕 ( K. D. Park ),권순배 ( S. B. Kwon ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2018 강원 농업생명환경연구 Vol.30 No.2
This study was conducted to investigate the impact of light conditions and wet cold treatments on the characteristics of seed germination patterns of several wild vegetables. The 1,000-grain weight of wild vegetables ranged from 0.08 to 14.5 g. The germination rate of 9 species grown under light conditions was relatively higher than that of those grown under dark conditions. The germination rate of 10 species subjected to seed prechilling (2°C for 50 days) was relatively higher than that of the control. The average number of days to germination for 12 species (Adenophora triphylla var. japonica (Regel.) Hara, Allium sacculiferum Maxim, Allium senescens L., Aruncus dioicus var. kamtschaticus (Maxim.) Hara, Aster scaber Thunb., Asyneuma japonicum (Miq.) Briq., Cirsium setidens (Dunn) Nakai, Crepidiastrum denticulatum (Houtt.) Pak & Kawano, Ligularia fischeri (Ledeb.) Turcz., Peucedanum japonicum Thunb., Platycodon grandiflorum (Jacq.) A.DC. and Synurus deltoides (Aiton) Nakai) subjected to seed prechilling was lower than that of the control. In particular, the value of ΔADG following wet cold treatment was the lowest at -9.5 days and was the lowest for Adenophora triphylla var. japonica at -8.2 days, Aruncus dioicus var. kamtschaticus at -7.9 days, Peucedanum japonicum at -7.9 days, Allium senescens at -7.0 days, Aster scaber at -6.2 days and Allium sacculiferum at -6.1 days. The germination coefficients (Δ CG value 9.5-21.6) of four species Ligularia fischeri, Cirsium setidens, Synurus deltoides and Adenophora triphylla var. japonica were considerably increased by the wet cold treatment. However, Allium microdictyon, Heracleum moellendorffii Hance and Aralia elata (Miq.) Seem. did not germinate in all treatments.
Active MA조건이 치콘 저장성과 절단면 갈변에 미치는 영향
정현진 ( H. J. Jung ),최인이 ( I. L. Choi ),손진성 ( J. S. Son ),서현택 ( H. T. Seo ),원재희 ( J. H. Won ),강호민 ( H. M. Kang ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2012 강원 농업생명환경연구 Vol.24 No.1
본 실험은 active와 passive MA 조건이 치콘의 저장성 과 절단면 갈변에 미치는 영향을 알아보고자 실시하였다. Active MA 조건은 저장중 생체중 감소를 억제하였으며, 그 감소폭은 0.2% 미만이었다. 저장중 포장내 이산화탄소와 산소 농도는 active MA 0:50:50 (CO2:O2:N2) 조건에서 가장 큰 변화를 보였다. 에틸렌 농도도 passive MA처리구보다 active MA조건에서 높았으며, 10:10:80 (CO2:O2:N2) 조건에서 가장 높았는데, 그 농도는 0.6 ppm 미만 이었다. 저장중 외관상 품질은 passive MA 보다 active MA조건에서 높게 유지되었는데, active MA 처리구간에 통계적으로 유의성 있는 차이는 없었다. Active MA 조건은 10℃ 저장중 치콘 절단면의 갈변 방지에도 유의성 있는 효과를 보였는데, 이는 active MA 조건의 고농도 이산화탄소가 원인인 것으로 판단되었다. This experiment was carried out to find the effects of packages with chicon in active and passive MA (Modified Atmosphere) conditions preventing for browning on the cutting plane and their storability during storage. The active MA condition suppressed the loss of fresh weight of chicon with less than 0.2% to that of control or passive MA condition. The carbon dioxide and oxygen contents in packages have beed particularly shown as highest values in active MA 0:50:50 (CO2:O2:N2). The content of ethylene was also shown higher in active MA (CO2:O2:N2=10:10:80) than passive MA condition at less than 0.6ppm. The quality of chicon maintained by both conditions seems to be shown better in active MA than passive MA condition, but there was no significant difference among the trials in active MA treatments. Furthermore, the active MA condition has significantly prevented the browning on the cutting plane of chicon at the storage temperature of 10℃. We consider these helpful effects of active MA condition to be a carbon dioxide rather than oxygen and nitrogen.