• 비료회보
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• s.563
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• pp.11-16
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• 2004

전 세계적으로 입상 배합비료의 형태로 농작물 재배업자들에게 전달되는 비료의 비율은 지난 30년간 꾸준히 증가했다. 앞선 기술을 개발하고 있는 미국에서는 비료 생산 및 유통에 관한 경제학으로 인해 특히 입상 배합비료(BB)가 촉진되고 있으며, 현재 전국에 걸쳐 5,000 곳의 혼합설비가 산재해 있다. 혼합 기술의 주요 공급업체인 A.J. Sackett & Sons Co.의 프로젝트 엔지니어인 찰스 포어미사니도 설명한 것처럼, 혼합에는 농경법의 측면이나 경제적인 측면에서 여러 가지로 유리한 점이 있다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.19
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• pp.78-82
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• 1975

The fatty acid composition of the oil in the rapeseed grown by spring and autumn planting were determined by gas liquid phase chromatography. Erucic acid content of the rapeseed oil grown by autumn planting was higher than that produced by spring planting, but the contents of oleic acid and linoleic acid were lower in autumn planting than those in spring planting. There was significant difference at 1% level between seasonal plantings. The reasons for the different fatty acid compositions were the low integrated temperature, the high amount of precipitation and the short hours of sunshine during the maturing period in autumn planting.

• KCID journal
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• v.6 no.1
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• pp.20-30
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• 1999

화석연료의 고갈에 대비한 대체에너지 개발의 일환으로 미국의 에너지성과 TVA는 속성수인 Cottonwood를 재배하여 에너지화 하는 연구를 하고 있다. 미시시피주 Stoneville에 0.365ha 크기의 시험포 6개를 설치하고 Cottonwood와 Cotton을 재배하며 환경영향을 평가하기 위하여 유출량, 부유물질(TSS), 질산성 질소($NO_3-N$, 총인(T-P) 등의 수질인자를 모니터링하고 있다. 본 연구는 EPIC 모델이

• The Korean Journal of Pesticide Science
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• v.4 no.1
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• pp.38-43
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• 2000

As the first step of a research on the establishment of control strategy for grapevine diseases and insects, the current status of pest control and yield losses by them were surveyed from grapevine growers of Korea. For insects, the most difficult to control was a grapevine stem borer and a grapevine clearwing moth was the next. On the other hand, several diseases including anthracnose, downy mildew, powdery mildew, bird's eye rot, leaf blight, were answered by the growers. The occurrence of the pests varied to the cultural practices. Yield loss was more serious in rainfall intercept culture than in plastic film house culture and diseases caused more loss in yield than insects did. However, the grapevine grower's potential for the identification of the kinds of pests was not high enough. When the pest was observed, the growers consulted mainly with local pesticide dealers or neighbouring growers and usually applied the pesticides prescribed by the dealer. More than half of the growers did not use pest control calendar, and most of the growers applied pesticides before any symptom appeared. Also, more than half of the growers applied mixture of at least more than 1 kind of pesticide and nutrients. Insecticides were applied less than 5 times during the season, but it was more than 6 times for fungicides. In the pesticide selection, the growers checked control effect first, regardless of the registration, and the pest control cost per unit area varied very much depending on the growers.

• Journal of the Korean Society of International Agriculture
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• v.30 no.4
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• pp.320-327
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• 2018

The purpose of this study is to suggest the policy direction for promoting Korean grape, Shine Muscat, export to China. For this, the data were collected from 102 Chinese who live in Guangzhou province. The survey was conducted from Oct 10th to 13th 2017. PLS-SEM model is used to investigate the main factors that cause the Chinese consumers to purchase Korean grape, Shine Muscat. This study finds that the post-evaluation factor is more important to obtain final evaluation and to purchase Korean grape in the future. Thus farmers and research institutes should investigate how to improve the quality for the sweetness and the texture of the grape, reflecting the Chinese consumers' preference.

• Korean Journal of Medicinal Crop Science
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• v.15 no.3
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• pp.177-182
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• 2007

This study was conducted to produce high quality ginseng seedlings by improvement of the physical properties of nursery soil. In order to select optimum nursery conditions, nursery types were treated with the yangiik nursery and semi-yangiik nursery. Soil conditioners were treated with two different materials of puffed rice husks and perlite. This experiments were tested at Gyunggido Agricultural Research and Extention Services, Hwaseng, from 2003 to 2004. Soil permeability was better at the plot of yangiik nursery than that of semi-yangjik nursery, and was better at plot of puffed rice husks than that of perlite. Soil porosity was improved 2.2% at plot of yangjiik nursery compare at that of semi-yangjik nursery, and was improved 2.0% at plot of puffed rice husks compared to control. There was no difference in the number of ginseng plants per kan among treatments. Root length was longer at plot of yangjik nursery than that of semi-yangjik nursery. More available ginseng plants per kan were obtained from the plot of yangjik nursery by more 252 seedlings than that of semi-yangjik nursery, but there was no significant difference between soil conditioners. The number of available seedlings per kan produced from yangjik nursery was 21.7% higher than those produced by semi-yangjik nursery. The number of available seedlings per kan produced from plot of puffed rice husks was 16.3% higher than that of control.

• Korean Journal of Plant Resources
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• v.37 no.1
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• pp.93-99
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• 2024

As a result of low temperature exotherm (LTE) measurement targeting the buds of 13 grape cultivars that are recently cultivated or introduced in Korea, 'Shooting Star', 'Muscat Bailey A', 'IFG-6', 'Vanessa Seedless', 'Summer Crispy', 'Shine Muscat', 'Jelly Pop', 'Campbell Early', 'Ruby Seedless', 'My Heart', 'Kyoho', 'Thompson Seedless', and 'Violet King' in order of being resistant to low temperatures. The LTE value was the lowest at -18.9℃ in 'Shooting Star' and the highest at -12.5℃ in 'Violet King'. Through these results, it can be used as basic data to determine whether or not cultivation by region is possible efficiently by comparing data based on 'Campbell Early' and 'Kyoho', which are presented as standard varieties for domestic cultivation.

• Journal of The Korean Society of Grassland and Forage Science
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• v.31 no.2
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• pp.167-176
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• 2011

본 연구는 우분액비의 시용이 경사도를 달리한 사료용 옥수수 재배지에서 옥수수의 생산성 및 유거수 중의 N의 유실에 미치는 영향을 조사하기 위하여, 건국대학교 축산대학 사료작물 시험포 내 설치된 Erosion apparatuses (가로 0.33 m, 세로 3 m, 깊이 0.4 m)를 이용하여 수행하였다. 시험구의 경사도는 0%, 8.75%, 17.50%로 하였으며, 우분액비는 6개월 이상 부숙된 것으로 질소 기준 200 kg/ha 시용하였다. 옥수수의 건물생산성과 사료가치는 경사도에 의해 영향을 받았으며, 17.50% 경사지의 건물생산성은 0% 경사지의 건물생산성에 비해 유의적인 감소를 보였다 (P<0.05). 유거수 중의 평균 $NO_3^--N$과 $NH_4^+-N$의 농도는 경사가 높아질수록 유의적으로 증가하였다(P<0.05). 이상의 결과에서 보는 바와 같이 우분액비를 시용하여 사료용 옥수수를 재배할 경우, 경사도가 증가할수록 그리고 집중호우가 발생할 경우에 유거수 중의 양분 유실량은 증가가 예상되기 때문에 경사도가 심한 지역에서 옥수수를 재배할 때에는 양분유실에 따른 수질오염을 고려하여 사료작물 재배 방법이 모색되어야 한다.

• Proceedings of the Ginseng society Conference
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• 1984.09a
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• pp.57-62
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• 1984

Four year old American ginseng plants (Panax quinquefolium L.) were grown in control and treated field plots in North Carolina, USA. Soil pH (4.4, 5.5, and 6.5), soil phosphate (19, 89 and 232 ppm) and mulch treatments (wheat straw, pine needle straw, poplar bark, oak bark, pine bark and hardwood leaves) were studied for their effects on total dry weight, total ginsenosides and 5 individual ginsenosides (A1, Rg1, Rd, Re, and Rb2). The leaf and root tissue were analyzed for ginsenosides by high pressure liquid chromatography (HPLC). The oak and poplar bark mulch treatments appeared to have the best effect upon the growth and production of roots while not significantly decreasing the ginsenoside content of the roots. The oak mulch showed a statistical increase in the ginsenoside content of the leaves.

• Korean Journal of Plant Resources
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• v.13 no.3
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• pp.249-254
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• 2000

Heating supply system using solar energy-collecting plate was examined for 20 farmers. Some problems, resolution, future energy system, and basic information were discussed, Installation cost was approximately 18 million won/20a. Main crops cultured were tomato(30%) and floricultural crop(40%). Minor crops cultured were grape, red pepper, cucumber, lettuce, and strawberry. Information was mostly obtained from agricultural service agents. 75% of farm house hold reported that energy reduction effect was below 20%, showing some different result compared with over 20% that was totalized from agricultural service agents. Cost of installation was excessive in considering energy reduction effect. Another problem was insufficient technical proficiency of solar energy company.