• 한국작물학회지
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• 제47권4호
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• pp.311-318
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• 2002

Planting date of soybeans [Glycine max (L.) Merr.] is one of production components in cultural systems. The objective of the current study was to identify the components of soybean production and cultural practices encompassing planting dates and cultivars that respond to dry matter accumulation, harvest index and yield components. Three determinate soybean cultivars were planted on May 13 (early), June 3 (mid), and June 24 (late). Planting density was 60$\times$15cm with 2 seeds (222,000 plants per ha). Soybean plants were sampled every 10 days interval from the growth stages of V5 to R8 and separated into leaves including petioles, stems, pods, and seeds. Dry matter accumulations, harvest indices, and yield components were measured. Early planting had taken 55 days from VE to R2 and late planting taken 39 days indicating reduced vegetative growth. Early planting showed higher leaf, stem, pod and seed dry weights than late planting. However, late planting appeared to be higher harvest index and harvesting rate. Vegetative mass including leaf and stem increased to a maximum around R4/R5 and total dry weight increased to a maximum around R5/R6 and then declined slightly at R8. The highest seed yield was obtained with mid planting and no difference was found between early and late plantings. Cultivar differences were found among planting dates on growth characteristics and yield components. The results of this experiment indicated that soybean yield in relation to planting dates examined was mainly associated with harvest index and harvesting rate, and planting date of cultivars would be considered soybean plants to reach the growth stage of R4/R5 after mid August for adequate seed yield.

• Journal of Korean Neurosurgical Society
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• 제38권1호
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• pp.77-79
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• 2005

We report a case of early stress fracture of the pelvic ring following an extension of a multilevel instrumented lumbosacral fusion in an osteopenic female. Surgeons should be aware of possibilities of pelvic complications in osteopenic patients with lumbosacral arthrodesis and should take care when harvesting iliac bone graft.

• Archives of Plastic Surgery
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• 제48권2호
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• pp.208-212
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• 2021

Background There are currently no guidelines for the postoperative wound management of the hard-palate donor site in cases involving mucosal harvesting. This study describes our experiences with the use of an artificial dermis for early epithelialization and transparent plate fixation in cases involving hard-palate mucosal harvesting. Methods A transparent palatal plate was custom-fabricated using a thermoplastic resin board. After mucosal harvesting, an alginic acid-containing wound dressing (Sorbsan) was applied to the donor site, which was then covered with the plate. After confirming hemostasis, the dressing was changed to artificial dermis a few days later, and the plate was fixed to the artificial dermis. The size of the mucosal defect ranged from 8×25 to 20×40 mm. Results Plate fixation was adequate, with no postoperative slippage or infection of the artificial dermis. There was no pain at the harvest site, but a slight sense of incongruity during eating was reported. Although the fabrication and application of the palatal plate required extra steps before and after harvesting, the combination of the artificial dermis and palatal plate was found to be very useful for protecting the mucosal harvest site, and resulted in decreased pain and earlier epithelialization. Conclusions The combination of artificial dermis and a transparent palatal plate for wound management at the hard-palate mucosal donor site resolved some of the limitations of conventional methods.

• 한국초지조사료학회지
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• 제38권2호
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• pp.126-134
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• 2018

본 연구는 영남산간지역에 적합한 조사료 생산 작부체계를 설정하기 위해 봄과 가을용 귀리의 재배방법을 검토하였다. 재배는 2015년 2월부터 11월까지(1차), 2016년 2월부터 11월까지(2차) 2회에 걸쳐 춘파와 추파로 구분하여 실시하였다. 품종은 국내에서 육성된 다크호스와 하이스피드를 사용하였다. 춘파시험은 2월 21일, 3월 3일 및 3월 13일 3회에 파종하여 5월 27일, 6월 6일 및 6월 16일에 각각 수확하였다. 추파는 8월 15일, 8월 24일 및 9월 5일 3회 실시하여 10월 15일, 10월 25일 및 11월 4일에 각각 수확하였다. 봄 재배의 경우 초장은 파종시기가 빠를수록 길었고, 특히 하이스피드 품종을 3월 3일에 파종하여 6월 6일에 수확 시에 가장 길었다. 건물률은 수확시기가 늦어질수록 증가한 반면, 조단백질 함량은 감소하였다. NDF 함량은 품종별로 볼 때 다크호스가 하이스피드에 비해 높았고, 수확시기는 5월 27일 수확이 6월 6일 수확에 비해 높았다. 추파 귀리의 경우 초장은 파종시기가 8월 25일, 15일 및 9월 4일의 순으로 길었다. 한편 건물수량은 파종시기가 8월 25일, 15일 및 9월 4일의 순으로 높았고, 수확시기는 11월 4일, 10월 25일 및 10월 15일 순으로 높았다. 건물률은 파종시기가 빠를수록 높게 나타난 반면, 수확시기는 늦을수록 높았다. 조단백질 함량은 파종시기가 늦을수록 높았고, 수확시기는 빠를수록 높았다. NDF 함량은 파종시기가 8월 25일이 9월 4일에 비해 높았으며, 수확시기는 11월 4일이 10월 25일에 비해 높게 나타났다. 이상의 결과에서 영남산간지역에서 봄에 사료용 귀리를 파종할 경우 늦어도 3월 3일까지는 파종을 완료하고 6월 6일 이전에는 수확하는 것이 유리할 것으로 사료되었으며, 가을에 귀리를 파종할 경우 9월 4일까지 파종을 완료하고 10월 25일 이전에 수확을 완료하는 것이 조사료 생산성을 향상시키는데 유리할 것으로 판단되었다.

• 한국식품저장유통학회지
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• 제5권1호
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• pp.1-6
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• 1998

Physicochemical properties of early cultivar of Satsuma mandarin(Citrus unshiu Marc. var. miyagawa) according to harvesting year during 1990 to 1995 were investigated. Climatic conditions of every year affected the quality of citrus fruits. Compared to other harvesting years, flesh ratio and soluble solids were higher, but acid content was lower on citrus fruits produced in 1994, as for good climatic conditions during growth of fruits. Especially, acid content of fruits produced in 1993 was higher, compared to those of years, as for low mean temperature and high rainfalls. Fruit weight, peel thickness and soluble solids had a good linear correlation to fruits size, but acid content and flesh ratio had not correlation derived from difference of individual fruits. From the climatic data, the prediction of fruit quality would be possible in some degree before harvest. It seemed recommend to ably the flexibe method by harvesting year for the quality stanardization of citrus fruit.

• Journal of Biosystems Engineering
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• 제19권1호
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• pp.17-21
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• 1994

This reasearch was performed to provide the fundamental intonation for the mechanization of Korean pine cone harvest when the shoot shearing method is adopted. Shear force and stress of pine cone shoots were measured and analyzed for this purpose. Samples are selected along their harvesting time and tested in 17 levels of shoot diameter from 10 to 26mm with 1mm increment. 1) Shear force-deformation characteristics showed that shoot reached its rupture point after 2 to 4 of bio-yield points. It was supposed that these multiple bio-yield points were caused by the discrete compression of wood parts which are composed of water, nutrient, resin, etc. 2) Required shear force to shear shoot was proportional to the square of shoot diamter, however, shear force for shoots of early harvesting time(Aug. 31) was proportional to the shoot diameter. Variance of shear force was increased as the harvesting time was delayed. Shear forces were distributed from 468N(Aug. 31, 12mm dia) to 4153N(Aug. 31, 26mm dia) disregarding the sampling date. 3) The average shear stresses by sampling dates were 744,822, and 883N/m2, respectively, and for the earlier shoot samples shear stress was quite smaller than the others. Shear stress was proportional to shoot diameter squared, and the effect of shoot diameter on the shear stress was decreased as harvesting time was delayed.

• 대한가정학회지
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• 제40권11호
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• pp.193-205
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• 2002

To evaluate farmers' workload during harvesting grapes in summer, this study investigated farmers' physiological, psychological responses, work postures and thermal environment around in the field. This field study was conducted in the Anseong County of Kyonggi Province at the end of August. Five career farmers (1 male, 4 females) volunteered as subjects. Three of them were over their sixties. During harvesting grapes in the field, physiological responses were monitored continuously. 1. Air temperature (T/sub a/), air humidity(H/sub a/), black globe temperature(T/sub g/), air velocity and WBGT around the grape field were 26.9℃, 77.7%RH, 32.8℃, 0.08㎧ and 26.3℃, respectively. Because farmers started the harvesting task in early morning, thermal environments weren't conditions to give farmers severe heat strain. 2. The percentage of the work postures was larger in order of standing, walking, and bending one's back posture. Particularly, the percentage of standing posture with raising both arms above shoulder of two farmers was up to 29% and 61% of the total work duration. 3. Rectal temperature (T/sub re/), mean skin temperature (T/sub sk/), clothing microclimate temperature (T/sub cl/) on the chest and the back, heart rate (HR) and energy expenditure (EE) were 37.2℃, 33.1℃, 32.0℃, 32.4℃, 88bpm and 1.3 Kca1/㎡/min respectively. In the point of these physiological results, we evaluated that the harvesting task was a moderate work. 4. All farmers expressed‘hard, hot, humid and slightly uncomfortable’ at the end of works for each subjective questionnaire. The grape harvesting tasks were not evaluated as a very hard work in the point of physiological work standards. But we considered 1) inappropriate work posture (standing posture with raising both arms above shoulder) and 2) farmers' age as burden factors. These findings suggest that adding adequate protective clothing/equipments for farmers may contribute to maintain their body temperature within the normal range, stabilize HR and decrease psychological strain.

• 한국작물학회지
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• 제58권1호
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• pp.28-35
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• 2013

Anthocyanin pigments from three pigmented rice varieties, Hongjinju, Sintoheugmi and Josaengheugchal pigmented by black color, were quantified to evaluate effects of transplanting and harvesting time during seed development. Hongjinju, a rice variety of grains pigmented by red color, contains only two kinds of anthocyanins, delphinidin and cyanidin. Meanwhile, delphinidin, cyanidin, and pelargonidin were identified in Sintoheugmi and Josaengheugchal. Anthocyanidin contents in pigmented rice variety Hongjinju under different planting times were decreased with prolonged harvesting times. The Sintoheukmi showed that cyanidin content was the highest among analyzed pigments during seed development. Two anthocyanins (cyanidin and pelargonidin) in Josaengheugchal recorded highest contents at 20 days after heading in three transplanting times. Cyanidin content was also slightly increased with prolonged transplanting time. Total anthocyanidin contents in Hongjinju were always lower than that of Sintoheukmi and Josaengheukchal. In two rice varieties, Sintoheugmi and Josaengheugchal, $a^*$ values were commonly slightly decreased by late transplanting and harvesting times. Changes of $a^*$ and $b^*$ values in waxy rice varieties, Sintoheugmi and Josaengheugchal varied more than those in Hongjinju. In Josaengheugchal, early harvesting before maturity showed lower brown rice yield and late harvesting in the each transplanting times resulted in highest brown rice yield.

• 한국자원식물학회지
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• 제27권2호
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• pp.119-124
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• 2014

본 연구에서는 수확시기에 따른 과실품질과 폴리페놀화합물인 에피카테킨, 카테킨, 레스베라트롤, 쿼세틴 함량에 미치는 영향을 구명하고자 본 연구를 실시하였다. 포도의 특성과 품질은 수확 시기에 관계없이 만기 수확구에서 과실특성이 향상되었고, 당도는 높고 산도는 낮았다. 명도(L)는 '캠벨얼리'와 '자옥'에서 적색도(a)는 '자옥'에서 만기 수확구에서 높았으며, 황색도(b)는 '자옥'에서 수확시기에 따라 높은 차이를 보였다. 에피카테킨 중 EC는 모두 만기 수확구에서 높았으며, '자옥' 품종은 EGC와, EC가 수확시기에 따라 함량 차이가 뚜렷하였으며, 품종에 따라 에피카테킨 조성이 달랐다. 카테킨, 레스베라스톨은 '캠벨얼리'와 'M.B.A'는 만기 수확구에서, '자옥'은 조기 수확구에서 높았으며, 쿼세틴은 '캠벨얼리'는 조기 수확구에서 '자옥'과 'M.B.A'는 만기 수확구에 높았다. 품종별로는 '캠벨얼리'가 수확시기와 관계없이 '자옥'과 'M.B.A'에 비하여 카테킨과 레스베라스톨이 높았다.

• 한국약용작물학회지
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• 제4권4호
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• pp.329-332
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• 1996

황기의 수확시기(收穫時期)에 따라 생육(生育) 및 수양(收量)의 변화(變化)를 알아보고자 1년생(年生) 및 2년생(年生)에 대하여 10월(月) 10일(日), 10월(月) 25일(日), 1월(月) 10일(日) 등 3회(回)에 걸쳐 수확시기(收穫時期)를 달리 하여 시험(試驗)해 본 바 다음과 같은 결과(結果)를 얻었다. 1 황기 1년생(年生) 수확시(收穫時) 초장(草長), 경경(莖徑), 마디수, 분지수(分枝數), 협당립수(莢堂粒數), 건물중(乾物重)등은 수확시기(收穫時期)에 따른 차이가 없었으나, 근장(根長)과 근경(根徑)은 10월(月) 25알(日) 수확(收穫)까지는 진전(進展)이 없다가 11월(月) 10일(日) 수확(收穫)에서는 증가(增加)되었으며, 건근중(乾根重)과 수양(收量)은 11월(月) 10일(日) 수확(收穫)까지 수확시기(收穫時期)가 늦어 질수록 계속 증가(增加)되는 경향(傾向)으로 근부(根部) 생육(生育) 및 수양(收量)은 지상부(地上部) 생육(生育)과는 관계없이 수확(收穫) 시기(時期)가 늦어질수록 증가(增加)되었다 2. 황기 2년생(年生)의 수확시기별(收穫時期別) 생육특성(生育特性)에서 초장(草長), 잔경(盞徑), 근장(根長). 근경(根徑) 등은 10월(月) 25일(日) 수확(收穫) 까지는 약간 증가(增加)되었으나 마디수, 분지수(分枝數), 화잔수(花盞數), 엽수(葉數), 건물중(乾物重) 등은 수확시기(收穫時期)에 따른 차이는 없었으며, 건근중(乾根重)과 수양(收量)은 1년생(年生)과 마찬가지로 11월(月) 10일(日) 수확(收穫)까지 계속 증가(增加)되는 경향(傾向)이었다. 3. 재배기간(栽培期間)(1, 2년생(年生))에 따른 엑스함양(含量)은 차리(差異)가 없었지만 수확시기별(收穫時期別)로는 11월(月) 10일(日) 까지 수확시기(收穫時期)가 늦어질수록 엑스함양(含量)이 약간씩 증가(增加)하는 경향(傾向)이었다. 이상(以上)의 결과(結果)에서 볼 때 황기의 수확시기(收穫時期)는 늦어질수록 수양(收量)이 증가(增加)되므로 기온하강(氣溫下降)에 의하여 수확(收穫) 작업(作業)에 지장(支障)을 받지 않을 정도(支障)인 11월(月) 중순경(中旬傾) 수확(收穫)하는 것이 적합(適合)하다고 생각된다.