• 생물환경조절학회지
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• 제13권2호
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• pp.67-72
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• 2004

한국 고추 주산지에서 '금탑', '부강' 품종을 1998년과 1999년에 재배하여 4회에 걸쳐 홍고추를 수확하였다. 과실 내적품질로 환원당, capsaicinoids, 비타민C 함량을 측정하여 고추 성장기간의 온도, 강우량, 일조시간의 기상여건과 상관을 살펴보았다. 고추의 환원당 함량은 늦게 수확할수록 높아지는 경향을 보이고 있다. Capsaicinoids 함량은 수확시기별, 년도별 편차가 심하게 나타났으며. 비타민 C의 함량은 품종보다 기상여건에 더 많은 영향을 받았다. 기상여건과의 고추 성분별 상관은 환원당 함량에서는 수확 전 강우량과 음의 상관을, 일조시간과는 높은 양의 상관이 있었다. Capsaicinoids와 비타민 C 함량은 수확 전 강우와 음의 상관이 나타냈는데, 비타민 C의 경우 두 품종 모두 비교적 높은 결정계수($R^{2}$ 값)를 보였다.

• 농업과학연구
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• 제38권3호
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• pp.405-411
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• 2011

In this study, we evaluated the changes of fruit quality indices during fruit development and ripening in Korean new pear cultivar 'Wonhwang' and 'Whasan' to determine appropriate harvest time and to enhance the marketability. The fruit of each cultivar harvested from 100 days after full bloom (DAFB) to 135 and 150 DAFB in 'Wonhwang' and 'Whasan', respectively. The fruit growth of both cultivars showed a typical single sigmoidal pattern. Flesh firmness of two cultivars decreased continuously with fruit development and ripening, reaching a final level of about 2.6 kgF at harvest stage. The starch content of fruit sap was much higher in the fruits of early development stage than the later stage of fruit ripening. In 'Wonhwang' pears, the starch level decreased coincide with fruit ripening (130 DAFB), while that of 'Whasan' decreased from very early stage of fruit development (120 DAFB), 30 days before full ripe. 'Whasan' pear showed much lower acidity level of about 0.13% during fruit development and ripening period compared with that of 'Wonhwang'. Therefore, the ratio of soluble solids to total acidity (TSS/acid) increased gradually with fruit development and ripening, reaching a final level of 80 and 98 in 'Wonhwang' and 'Whasan', respectively. There were no climateric rise of fruit respiration during fruit ripening periods in two oriental pear cultivar. The changes of skin color difference including hunter vale $a^*$ which means loss of green color occurred only after onset of ripening in two cultivars.

• 식물병연구
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• 제7권1호
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• pp.37-41
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• 2001

복숭아 수확 후 보르도액의 살포효과를 구명하기 위하여 미백도 품종에 대해 9월 중순부터 1∼3회 살포한 후 이듬해 5월부터 세균성구멍병 이병율을 조사하였을 때, 보르도액 살포에 의한 방제효과는 살포횟수가 많을수록 높게 나타났다. 복숭아 수확기인 8월 상순의 경우 잎에서는 무처리구의 27.4%∼38.1%에 비해 보르도액 살포구에서는 9.7%∼31.8%의 이병율로 16.5%∼64.6%의 방제가를 보였고, 과실에서도 잎에서와 비슷한 경향이었는데 무처리구의 17.2%∼21.6%에 비해 41.9%∼70.9%의 방제가를 나타내었다. 보르도액 살포로 인한 약해는 6-6식 보르도액에서 2정도의 약해를 나타내었고, 4-12식 및 4-8식 보르도액에서는 약해가 없었으며, 복숭아 품종간에는 차이를 보이지 않은 경향이었다.

• 한국농공학회지
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• 제11권1호
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• pp.1580-1597
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• 1969

1. The field test of our experiment comparing the traditional syckle and the new manually pulled cutter showed that the working efficiency of the manually pulled cutter is about two times higher than that of the syckle. The operator can standerect while using the manually pulled cutter, thus reducing fatigue. Because of the reduction in body fatigue, the operator is able to work more total hours, making the manually pulled harvester three times more efficient than the syckle. 2. The optimum angle for the V-shaped cutter blade varies according to the number of the hiller, but in manufacturing the cutter, the range must be controlled between $35^{\circ}{\sim}45^{\circ}$. 3. The radius of curvature of the V-shaped blade is closely related to the blade angle. The best results were obtained when the radii of curvature were r=32cm with $35^{\circ}$ angle, r=153mm with $45^{\circ}$ angle, and r=220mm with $40^{\circ}$ angle. 4. The hardness distribution test of the blade showed great differences between foreign made and domestic made blades. The heat treatment method must be greatly improved for superior hardness distribution. 5. Although the efficiency of the manually pushed cutter is equal to that of the manually pulled cutter, the manually pushed cutter is not only more expensive to produce but also has a much more complicated structure than the manually pulled cutter. Because of our rural economic conditions, the power harvester which is utilized in foreign countries can not yet be introduced here. Thus, the manually pulled cutter should be popularized in our rural areas until economic conditions will allow us to introduce power harvesters. 6. The use of the manually pulled cutter will make it possible for an operator to harvest an area in only one-third of the time that it would take to harvest the same area with a traditional syckle, and it will make it possible for an operator to earn about 8,000 won for harvesting 10 Jung-bo: such benefits will help in increasing farm income and will contribute to farm modernization.

• 대한수의학회지
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• 제45권2호
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• pp.155-161
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• 2005

Proteomics is a useful approach to know protein expression, post-translational modification and protein function. We investigated the protein expression pattern and identity in chickens fed with the tissue culture medium waste after harvest of Korean wild ginseng (TCM-KWG) (Panax ginseng). Two groups (n=60/group) of day old broiler chickens were administered with 0 (control) and 0.8% (treatment) TCM-KWG through drinking water. After 5 weeks, we examined the protein expression pattern of fibularis longus and superficial pectoral muscle by Two-dimensional electrophoresis analysis. Interestingly, TCM-KWG treatment significantly increased five spot's density, and markedly reduced five spot's density in the muscles. We identified 10 proteins (desmin, myosin light chain 1, heat shock 25 kDa protein, collapsin response mediator protein-2A, alpha enolase, vimentin, actin alpha 1, my023 protein, pyruvate kinase and troponin T) by the matrix-assisted laser desorption ionization time of flight (MALDI-TOF).

• 혜화의학회지
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• 제14권1호
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• pp.23-33
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• 2005

Source : We can use a Lycium chinense Miller and a Lycium barbarum L. at the same time. but they only autorize Lycium barbarum L. as a source of Gouqizi. Culture : We have to culture at the central district and southward has a long term of blooming, bearing fruits and maturing in fertile soil, well drainage sandy soil. A cuttage has a advantage at producing number. and prowing and weeding has to be executed 2-3 times in a year. We fertillze 3 times a year, give a water not to be dry and have to be good at managementing drainage. Harvest : Generally it is best to be a harvested Gouqizi at summer. Process : Points of process is to protect a laceration which is made by a high heat, change color to black, well done dry the rind offruits has no a stiffness and the flesh of fruits has to be soft and freshred color. Quility : It is good that big and red fruits, thick fleshes of fruits, few seeds, soft and moist, sweet not bitter taste. A content of betain is more than 0.5%. And it must be content of ash is less than 6.0%. Contents of heavy metals has to detect less than 30 ppm and there are no reminding agriculural medinces.

• 약학회지
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• 제47권2호
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• pp.57-68
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• 2003

Under the active search for biologically active novel agents for cancer prevention and treatment, some agents have been found from plants which are easily available. Our previous research on them revealed that C. annuum L. var. angulosum Mill have high antiproliferating effect on cancer cells. However, it has not been known whether the anticancer efficacy is different according to each part of C. annuum L. var. angulosum Mill or whether it can be changed by timing of harvest or solvent for extraction. Thus we compared the efficacy of each part of C. annuum L. var. angulosum Mill and assessed how much difference in the efficacy can be made according to the time of harvest or solvents for extraction. We observed the morphologic change and apoptosis 48 hr after treatment with the extract of each part of C. annuum L. var. angulosum Mill in MCF-7 mammary gland adenocarcinoma cells and human hepatoma cells. We also counted cancer cells by trypan blue method and MTT method to check the cytotoxicity. The leaf extract showed the highest anticancer effect among all the parts of C. annuum L. var. angulosum Mill; 50％ and 70％ reduction in the number of cancer cells was observed at 25 $\mu\textrm{g}$/mι and 50 $\mu\textrm{g}$/mι, respectively. It was more than 2 times as potent as 5-fluorouracil (5-FU). We found chromosomal fragmentation, clumping, and destuction by PI staining, and DNA fragmentation by electrophoresis. In conclusion, this study suggests that leaf extraction using water as solvent has the highest antiproliferative and apoptotic activity in cancer cells compared with other parts of extraction.

• 한국작물학회지
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• 제51권1호
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• pp.14-25
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• 2006

Response of grain yield and milled-rice protein content to nitrogen (N) rates at various growth stages is critical for quantifying real-time and real-amount of applied N requirement for target grain yield and protein content. An experiment including 10 N rate treatments at transplanting, tillering and panicle initiation stages with four rice cultivars in 2003, 6 N treatments with two rice cultivars in 2004 and 2005 was conducted. Increase of N rates at PIS significantly increased both grain yield and milled-rice protein content but increase of N rates at tillering stage significantly increased grain yield but not milledrice protein content. Therefore, high grain yield and low milled-rice protein content would be difficult to obtain only by adjusting N rates at PIS. Internal N use efficiency (INUE) was 60.5 kg grain/kg N accumulation on an average over N treatments, cultivars, and experimental years, showing considerable reduction especially at high shoot N accumulation in the experimental year of low sunshine duration. Milled-rice protein content tended to increase almost linearly with increasing shoot N accumulation, but it revealed big variation even at the same shoot N accumulation at harvest. Milled-rice protein content decreased with increasing INUE. N accumulation in the milled rice increased at an almost constant proportion of 45.5 percent of the shoot N accumulated at harvest, showing slight decresing proportion with the increasing shoot N accumulation.

• 한국작물학회지
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• 제61권2호
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• pp.104-112
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• 2016

A double-cropping system with soybean (Glycine max) following the cultivation of potato, garlic, and onion is widely adopted in the southern region of Korea. For this system, marginal dates for planting must be determined for profitable soybean yields, because the decision to plant soybean as a second crop is occasionally delayed by harvest of the first crop and weather conditions. In order to investigate the effect of planting date on soybean yield, three cultivars (early and late maturity) were planted on seven different dates from May 1 to July 30 in both paddy and upland fields across 2012 and 2013. Soybean yields were significantly different among the planting dates and the cultivars; however, the interaction between cultivar and planting date was not significant. Based on linear regression, the maximum yield of soybean was reached with a June 10 planting date, with a sharp decline in yield for crops planted after this date. The results of this study were consistent with those of a previous one that recommends early and mid-June as the optimum planting period. Regardless of soybean ecotype, a reduction in yield of greater than 20% occurred when soybean was planted after mid-July. Frost during soybean growth can reduce yields, and the late maturity cultivars planted on July 30 were damaged by frost before completing maturation and harvest; however, early maturity cultivars were safely harvested. For sufficient time to develop and reach profitable yields, the planting of soybean before mid-July is recommended.

• 식물병연구
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• 제11권1호
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• pp.39-42
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• 2005

Sphaerotheca aphanis var. aphanis에 의한 딸기 흰가루 병은 수확기에 발생하여 국내에서 가장 큰 문제가 되고 있는 중요한 병해이다. 딸기 흰가루병은 초기에 적절히 방제하지 않았으 경우 급격히 전반되어 방제가 어렵기 때문에 재배초기의 적절한 약제처리가 흰가루병 방제에 필수적이다. 이 연구는 효과적인 수확기 흰가루병 방제를 위한 최적의 약제처리시기를 밝혀내고자 감수성 품종인 'Akihime'와 'Dochiodome'를 대상으로 개화 전 약제 처리체계에 따른 방제효과를 비교, 분석하였다. Strobilulin 계통의 azoxystrobin과 kresoxim-methyl 및 유기동제인 DBEDC를 처리시기와 방법을 달리하여 딸기 수확기까지 처리하였다. 여러 가지 처리조합 가운데 딸기 묘를 정식 전 DBEDC에 침지 처리한 후 개화 전 멀칭시기에 kresoximmethyl 엽면살포하는 방법이 흰가루병 방제에 가장 효과적이었다. 이 방제체계는 촉성재배시 수확기 흰가루병 방제에서 처리시기의 중요성을 제시할 뿐만 아니라 재배자에게도 저농약 재배방법을 제공하고 경영비도 감소시켜 줄 것이다.