• 한국작물학회지
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• 제31권2호
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• pp.226-230
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• 1986

wx 126조합으로부터 분리된 농녹색업과 담녹색엽 near-isogenic계통의 광합성 정도와 생장특성 및 수량관련형질들을 비교 검토한 결과를 요약하면 다음과 같다. 1. 농녹색엽계통이 담녹색영계통보다 엽록소 a, b 및 총엽록소 함량은 현저히 높았으나 엽록소 a, b의 비율은 큰 차이가 없었다. 2. 출수기 지엽에 있어서 단위엽면적당 광합성율은 농녹색엽계통이며 높았으나 단위엽녹소당 광합성량은 담녹색엽계통이 더 높았다. 3. 이앙부터 출수기까지의 CGR은 농녹색엽계통이 더 높았으며 이는 NAR이 높은 데서 기인된 것으로 해석되었다. 4. 농녹색엽게통의 주당수수, 주당영화수 및 주당수량은 담녹색엽계통에 비해 각각 높았으나 1,000입중과 등숙율은 두 계통간에 차이가 없었다.

• International Journal of Industrial Entomology and Biomaterials
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• 제3권1호
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• pp.97-99
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• 2001

Seven vegetables were planted in green houses to compare their yields and damages by insect pests based on three treatments, green music (GM), ultra sonic (US) and control. The vegetable yields of GM treatment were increased by an average of 17.81% than that of control for two years. There was a remarkable statistic difference in the yield between GM and respective controls such as radish, young radish, cucumber, spinach and Brassica oleracea var. acephala. There was no notable yield difference between US and controls for the semen vegetables within two years. The population densities of the insect pests in GM and US treatments were lower than controls. Only a few insect pests of some vegetables in GM and US treatments injured more seriously than in control.

• 한국작물학회지
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• 제51권6호
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• pp.534-538
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• 2006

The effects of Rhizobium inoculant, compost, and nitrogen on nodulation, growth, dry matter production, yield attributes, and yield of pea (Pisum sativum) var, IPSA Motorshuti-3 were assessed by a field experiment. Among the treatments Rhizobium inoculant alone performed best in recording number and dry weight of nodules/plant. The highest green seed yield of 8.38 ton/ha (36.9% increase over control) and mature seed yield of 2.97 ton/ha (73.7% increase over control) were obtained by the application of 90 kg N/ha. The effects of 60 kg N/ha, Rhizobium inoculant alone and Rhizobium inoculant along with 5 ton compost/ha were same as the effect of 90 kg N/ha in recording plant height, root length, dry weight of shoot, and root both at preflowering and pod filling stages, number of mature pods/plant, number of mature seeds/pod, 1000-seed weight, green, and mature seed yields of pea.

• 한국유기농업학회지
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• 제13권2호
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• pp.211-221
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• 2005

This experiment was conducted to evaluate the effect of animal slurry on nitrogen uptake of hairy vetch and growth of chinese cabbage in cropping system. Hairy vetch was seeded on September 20 in 2003 . We examined the effect of cover crop(hairy vetch (Vicia villosa Roth) and slurry application(0, l00, 200kg N/ha) on yield and N uptake. Dry matter yield and nitrogen uptake of hairy vetch were measured. The chinese cabbage succeeding cover crop was harvested in 2004. The nitrogen uptake of hairy vetch was 84, 121, 148kg N/ha respectively, when the slurry application was 0, 100 and 200kg N/ha. In addition. N uptake of hairy vetch at the plot of 100kg and 200 kg N/ha slurry were 44% and 76% higher than that of the plot without slurry application respectively. Slurry application of hairy vetch could increase nitrogen uptake by application of green manure at the harvesting time. the content of organic matter and P-content of soil with hairy vetch plot was higher than that of fallow plot due to inhibition of soil erosion. The organic matter levels tend to improve with the addition of hairy vetch. Hairy vetch could improve soil quality by reducing erosion compared with bare fallow. The green manure of hairy vetch with animal slurry maintained soil nutrient and reduced nitrogen fertilizer of chinese cabbage. The hairy vetch residues decomposed rapidly releasing half of their residues within 40 days after burial. The yield of chinese cabbage was 90% in the plot of manure of hairy vetch compared with chemical fertilizer. The yield in the plot treated with green manure of hairy vetch and 50% of chemical fertilizer was reduced 5% less than that of chemical fertilizer. Therefore, it was estimated that the green manure of hairy vetch-chinese cabbage cropping system could reduce nitrogen chemical fertilizer as much as 84~148kgN/ha. the green manure of hairy vetch with animal slurry maintained soil nutrient and reduced nitrogen fertilizer of chinese cabbage.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.209-209
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• 2017

The application of liquid swine manure to soil has been commonly reported to increase crop productivity by improving plant nutrient availability. This study was conducted to investigate the effect of liquid swine manure (LSM) application on yield of green manure crops in paddy. Three different application rates of LSM equivalent to 25%, 50%, and 75% of standard fertilization rate of P were applied to the paddy field after rice harvest, and two cover crops, hairy vetch (Vicia villosa Roth) and barley (Hordeum vulgare L.), were subsequently mix-seeded and cultivated. Plant height of barley was 7% higher in LSM P25% and LSM P50% compared to control treatment (no LSM application), while no significant difference was observed between LSM P75% and control. However, there were no significant differences in plant height of hairy vetch among treatments. Dry matter (DM) yield of green manure increased with LSM application rate, reaching a maximum at LSM P50% (38 and 17% yield increase over control for hairy vetch and barley, respectively), but it decreased at LSM P75% rate. Nitrogen production by green manure crops was the highest in LSM P50% treatment, where the amount of produced N was 57% higher than the optimum N fertilization level for rice ($90kg\;N\;ha^{-1}$). Excess green manure biomass above an optimum level can be removed and utilized either for incorporation into nearby cropland or for sale as fresh forage. Therefore, it is concluded that the application rate of LSM P50% is recommendable for the maximum biomass and nitrogen production from green manure crops in paddy.

• 한국초지조사료학회지
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• 제8권1호
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• pp.20-25
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• 1988

This experiment was conducted to find out the effects of the different cutting height on the chemical composition, energy production and relation of yields of Italian ryegrass, tall fescue and perennial ryegrass swards. It was carried out on the experimental field of Livestock Experiment Station, in Suweon, from Sept. 1986 to May 1987. The results obtained are summarized as follows: 1. Chemical composition and Van Soest fiber contents were slightly different among grasses. But were not same trend with cutting heights. At the late vegetative stage, crude protein and crude fiber content were much more in tall fescue, Ash in perennial ryegrass, E.E. and NFE in Italian ryegrass respectively. NDF, ADF, Hemicellulose, Lignin, Cellulose and Silica contents were much more in tall fescue than the others. 2. DM, DCP, TDN, StE, ME and NEL productions were appeared to high in line with Italian ryegrass, perennial ryegrass and tall fescue. In addition 6 cm cutting height was the most production in Italian ryegrass, 15 cm cutting height was the most production in perennial ryegrass and tall fescue. 3. The much more content of crude protein, the less nonstructural carbohydrate content. The less content of NDF, the much more nonstructural carbohydrate content. Green and dry matter yield before wintering were not influence the green and dry matter yield of the late vegetative stage, but green yield before wintering influenced total green yield.

• 한국작물학회지
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• 제45권2호
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• pp.93-96
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• 2000

The present study was performed to obtain the basic information about growth and quality related characteristics and optimum harvesting time for podedible pea which is a new crop in Korea but believed to have a great deal of potentials for both domestic and overseas markets. They can be consumed either as a fresh succulent vegetable or as tender green pods. The daily green pod yield of pod-edible peas started to increase from ten days after flowering and the maximum yield was recorded on 26 days after flowering. Ninety percent of pod yields could be harvested from 16 to 36 days after flowering. Mean green pod yield for the tested varieties was approximately 8.0 t/ha. Total vitamin C content of pod-edible peas showed continuously decreasing trends from five days after flowering. The highest sucrose content was obtained at ten days after flowering. The highest panel score based on sweetness, chewiness, and hardness for the processed green pods was shown at 10-15 days after flowering in all varieties tested, indicating that the optimum harvesting time for pod-edible peas was considered to be 10-15 days after flowering.

• 한국약용작물학회지
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• 제16권6호
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• pp.421-426
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• 2008

Three year-old peony (Paeonia. lactiflora Pall. cv. Taebaek) was cultivated in green-house at Jan. 15, Feb. 15, or Mar. 15, respectively. The mean of temperature during the forcing cultivation was higher (air; $1.0{\sim}11.1^{\circ}C$, soil; $1.1{\sim}7.4^{\circ}C$) than that of open-field condition. From sprouting to flowering in peony cultivated at Jan. 15 was about 54 days, which is shorted the cut flower periods (ca. 26 days) compared with the open-field cultivation. However, earlier forcing cultivars were very susceptible to pathogens such as powdery mildew or gray mold. The yield in green house was also lower than in the open-field cultivation. The content of bioactive compounds such as paeoniflorin and albiflorin in green-house cultivars was similar that of open-field cultivars. These results showed the forcing cultivation time of peony at Feb. 15 in green-house was most desirable for commercialization.

• 신재생에너지
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• 제7권3호
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• pp.6-16
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• 2011

In order to study the utilization of seaweeds as an alternative renewable feedstock for bioethanol production, their properties of hydrolysis and fermentation were investigated. The seaweeds were well hydrolyzed with diluted sulfuric acid. The weight loss of seaweeds reached 75-90%, but only 12-51% of them was converted into reducing sugars after the acid-hydrolysis at $130^{\circ}C$ for 4-6h. The yield of reducing sugars increased with increasing the hydrolysis time up to 4h and then decreased thereafter. In contrast, the ethanol yield from the hydrolysates increased with hydrolysis time except for green seaweeds maximizing at 4h. Optimal fermentation time by Saccharomyces cerevisiae (ATCC 24858) varied with seaweeds; 48h for green seaweeds, 96h for brown and red seaweeds. The ethanol yield from the hydrolysate reached 138${\pm}$37mg/g-dry for green seaweeds, 258${\pm}$29mg/g-dry for brown seaweeds, and 343${\pm}$53mg/g-dry for red seaweeds, which correspond to approximately 1.5-4.0 times more than the theoretical yield from total reducing sugars in the hydrolysates. The results obtained indicate clearly that the non-reducing sugars or oligosaccharides dissolved in the hydrolysate played an important role in producing bioethanol. Considering the productivity and production cost of each seaweed, brown seaweeds such as Laminaria japonica and Undaria pinnatifida seem to be a promissing feedstock for bioethanol production.

• 한국식품영양과학회지
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• 제45권9호
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• pp.1351-1357
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• 2016

항효모 활성이 우수한 녹차씨로부터 천연 보존소재를 개발하기 위하여 추출 원료를 최적화하기 위한 녹차씨의 전처리 방법을 평가하였다. 과피 유무에 따른 녹차씨의 추출 결과 추출물의 항효모 활성은 같았으며, 추출 수율은 과피를 제거한 속씨에서 근소하게 높은 것으로 나타났다. 건조에 따른 녹차씨의 수분 함량은 항효모 활성에는 영향을 주지 않았으나 추출 수율은 7.3% 수분 함량에서 가장 높게 나타났다. 분쇄 공정에 따른 녹차씨 추출물의 항효모 활성은 같았으나, 원료의 입도가 작은 믹서 분쇄 원료에서 추출 수율이 더 높게 나타났다. 녹차씨 오일을 추출한 부산물인 탈지 녹차씨를 추출하여 보존소재 원료로써 활용 가능성을 평가한 결과 항효모 활성은 녹차씨 추출물과 같았으며, 탈지 방법에 따라 수율은 다르게 나타나 헥산 추출 탈지 녹차씨보다 압착 탈지 녹차씨의 추출 수율이 더 높게 나타났다. 녹차씨의 전처리 방법 평가에 따라 천연 보존소재를 추출하기 위한 원료로서 과피가 포함된 녹차씨를 수분 함량 7.3%로 건조한 후 롤밀 분쇄하여 착유기로 오일을 추출한 탈지 녹차씨를 제조하였다. 탈지 녹차씨를 추출 용매에 따라 추출한 후 수율 및 항효모 활성을 조사한 결과 경제성이 높은 추출 용매는 물이 적합하였다. 추출 온도 및 시간에 따른 탈지 녹차씨의 추출결과 $90^{\circ}C$ 추출에서는 항효모 활성이 다소 불안정한 것으로 나타났다. 추출 수율과 항효모 활성의 안정성을 고려하여 물을 용매로 하였을 때 $50^{\circ}C$, 4시간 추출 조건이 적합할 것으로 생각된다.