• Proceedings of the Plant Resources Society of Korea Conference
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• 2000.10b
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• pp.46-52
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• 2000

Performance of direct seeded upland field Schizonepeta tenuifolia Briquet in Southern areas of Korea was evaluated at different seeding methods (drilling and broadcasting) and seeding rates (1.5, 2.0, 3.0 and 3.5$\ell$/10a). There were no differences in the yield components such as length of stem and ear diameter of stem number of branch, internode and ear, and yield of fresh and dry stem between the seeding methods with drilling and broadcasting, but yield components such as length of stem and ear, diameter of stem, number of brench, internode and ear, and yield of fresh and dry stem increased with seeding rates of from 2.5$\ell$/10a to 3.5$\ell$/10a. Therefore optimum rates and methods of sowing were from 2.5$\ell$/10a to 3.5$\ell$/10a with seeding at the drilling and broadcasting.

• Korean Journal of Agricultural and Forest Meteorology
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• v.11 no.4
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• pp.252-255
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• 2009

In this study we investigated the natural habitats of Allium grayi, Allium monanthum, Allium tuberosum' and Allium schoenoprasmum to develop a fundamental database for their breeding and cultivation. Both Allium grayi and Allium monanthum were growing wild mainly in the areas with the altitude of ${\leq}\;300\;m$. The natural habitats of Allium grayi and Allium monanthum were limited to the altitude of 1,000 and 800 m, respectively. Allium thunbergii was growing at a wide range of altitude from the lowlands (${\geq}\;100\;m$) to the high elevated areas (${\leq}\;1,000\;m$) whereas Allium maximowiczii was growing wild only at the high altitude of ${\geq}\;900\;m$. The number and the size of the natural habitat of Allium grayi were greater than those of Allium monanthum. The natural habitats of Allium grayi were in the Gyeonggi, Gangwon, Jeolla, and Gyeongsang Provinces whereas those of Allium monanthum were found mainly in the Chungcheong and Jeju Provinces. Allium grayi was growing wild in both inland and seaside districts whereas Allium monanthum was mainly in the inland areas.

• Journal of The Korean Society of Grassland and Forage Science
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• v.35 no.1
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• pp.17-25
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• 2015

The following experiments were used to evaluate the effect of seeding method and pre-emergence herbicides on weed control and the production of the $sorghum{\times}sudangrass$ [sorghum bicolor (L.) Moench] hybrid under field and in vitro conditions. Under the in vitro condition, we evaluated how different kinds of herbicides affect the rate of seed germination and the growth of early seedlings in the $sorghum{\times}sudangrass$ hybrid treated with herbicides. Simazine, alachlor, and methabenzthiazuron were used, and their concentration levels were 0%, 40%, 70%, and 100%. The germination ratio of the seeds was reduced by the application of simazine, methabenzthiazuron, and alachlor compared with the control (distilled water). The alachlor application severely decreased the sorghum germination ratio. However, seed germination was not greatly influenced by the concentration level of the herbicides. Root and shoot length were increased in the following order: control > simazine > methabenzthiazuron > alachlor. Overall, alachlor significantly reduced root length more than shoot length. The differential tolerance of the $sorghum{\times}sudangrass$ hybrid to pre-emergence herbicides by seeding method was then tested under the field condition. The plants were severely injured by the alachlor application, leading to a great reduction in the number of stems. However, for the simazine and methabenzthiazuron applications the number of stems lost was slightly lower than it was for the alachlor and simazine + alachlor applications. In the seeding method, drilling was more effective in reducing herbicide injury than broadcasting. All of the herbicides effectively controlled weeds. The simazine and methabenzthiazuron applications showed a significantly higher dry matter (DM) yield. However, the alachlor and simazine + alachlor applications severely reduced the DM yield. This result suggests that the alachlor application has a significant effect on plant production. Similarly, the total digestible nutrient (TDN) yield was greatly reduced by the alachlor and simazine + alachlor applications. From the results presented above, we concluded that the yield of DM was the highest for broadcasting with no herbicide. and drilling was the most-effective way to reduce herbicide injury. The simazine application was the most-effective herbicide, showing the highest forage yield and TDN yield.

• Journal of The Korean Society of Grassland and Forage Science
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• v.24 no.4
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• pp.317-323
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• 2004

This study was carried out to determine the effect of seed method and seeding rate on the desirable agronomic characteristics and yield of forage barley(Hordeum vuigare) at paddy field, National Livestock Research Institute, RDA, Suwon from October 2001 to May 2003. The experiment was arranged in a spilt plot design with three replications. Main plots consisted of tow seed method; Broadcasting and drilling, Sub-plots consisted of seeding rates; 130. 160, 190 and 220 kg/ha. The results obtained were summarized as fellows ; The resistance of cold, disease and lodging of barley for the seeding method and seed rate were not different. And dry matter percentage of barley for a seeding method of 130 kg/ha at the broadcasting was the lowest of $32.0\%$, and that for the drilling at 130 kg/ha was $32.7\%(P<0.05). Fresh yield of barley for a seeding method of drilling at 130 kg/ha was the highest of 32,073 kg/ha, and that for a seeding method of broadcasting at 130 kg/ha was the lowest of 20,944 kg/ha(P<0.05). Dry matter yield of barley for a seeding method of drilling at 160 and 130 kg/ha were the highest 9,170 and 9,138 kg/ha, and that fur a seeding method of broadcasting at 130 kg/ha was the lowest of 5,710 kg/ha(P<0.05). Based on the results of this experiment, it appears that the seeding method and rate of barley could be enhanced by drilling from 130 to 160 kg/ha, and broadcasting from 190 to 220 kg/ha. respectively.

• Journal of The Korean Society of Grassland and Forage Science
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• v.7 no.2
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• pp.71-78
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• 1987

This experiment was carried out to examine the effects of sowing method and summer management on the dry matter yield, dead matter, weed development and ground cover of orchardgrass (Dactylis glomerata L.) meadow. The experiment was allocated as a split-split plot design with three replications. The main plots were sowing method of drilling and broadcasting, sub plots were drainage of experimental field, adequate and inadequate, and sub-sub plots were cutting timeof orchardgrass, cutting before rainy season started and cutting after rainy season ended. The experiment was undertaken over a period of 14 months from September, 1983 to October, 1984. The results obtained are summarized as follows: 1. There were no significant differences in dry matter yield among treatments at the first cutting, but cutting before rainy season produced significantly more forage yield ($P{\le}0.01$) than cutting after rainy season at the second and third cuts. At the third cutting, drilled orchardgrass meadow showed a significant dry matter yield ($P{\le}0.05$) than broadcast orchardgrass meadow, 2. The dead matter of orchardgrass was accumulated only at the second cutting when orchardgrass meadow cut after rainy season. Orchardgrass produced in the adequate and inadequate drainage plots consisted 20.4 and 35.9% of dead material, respectively, but no significant difference was found between two drainage treatments. 3. Drilled orchardgrass meadow produced significantly less weeds ($P{\le}0.05$) than broadcast orchardgrass meadow, but the plots cut after rainy season produced significantly more weeds ($P{\le}0.01$) than the plots cut before rainy season. 4. The percent ground cover of orchardgrass in the plots cut before rainy season was significantly higher ($P{\le}0.01$) than that in the plots cut after rainy season at the second cutting. Drilled plots showed a slight increase in the ground cover than the broadcast, but the difference was not significant. The same trend of ground cover of the meadow estimated at the second cutting was sustained after the third cutting. 5. Based on the results of the experiment, it indicates that the second cut of orchardgrass should be made before rainy season related for maintaining high yield of the meadow. Drilling as a sowing method of orchardgrass meadow could be adopted in the view point of reducing weed development.

• Proceedings of the Korean Society of Crop Science Conference
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• 2005.04a
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• pp.46-47
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• 2005

• The Science & Technology
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• s.501
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• pp.72-75
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• 2011

`우리나라 곤충학, 발생생물학 분야의 대부 '한국 생물학계 창업 제1세대', '삼림해충의 천적', '분화중심설의 창시자, '국경을 초월한 학자의 양심', '학문 탐구에 종지부가 없는 학자', '한국동물학회와 한국생물과학협회의 산파역', '대한민국학술원의 산 증인', '자연보존운동의 선구자, '우직스런 학문적 자세의 귀감' 등 수많은 별호를 가진 이가 있다. 그는 평생을 오로지 곤충학 연구에만 헌신하여 198편의 연구논문과 후학들을 위한 26편의 저서를 남기고도 미수를 앞둔 2005년에 '나의 학문적 편력'을 출판, 후학들을 놀라게 했다. 올해 구순을 넘기고도 우리나라 곤충학 분야의 제1인자 자리를 지키며 "아직도 머릿속에 맴도는 관심사를 뒤쫓고 있다"는 규산 김창환(金昌煥 91)박사를 만났다.

• 프린팅코리아
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• s.4
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• pp.76-81
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• 2002

"6.25전쟁때 인쇄기를 열차에 싣고 대구로 내려가 초등학교용 전시 독본을 인쇄하던 일이 엊그제 같은데 벌써 80나이를 넘겼습니다. 세월은 그런가 봅니다." 교과서 출판의 제 1세대인 이대의 장왕사 사장(82.사진). 그가 최근 그동안 '교과서 출판과 인쇄'라는 외길 인생 길을 정리한 회고록 '나와 검인정 교과서'(중앙출판공사)를 펴냈다. 이 사장은 일본 메이지대학에 유학 중 학병문제로 귀국했다가 해방을 맞자 1945년 10월 출판사를 설립해 지리, 물리, 동양사 교과서를 발행하기 시작한 이후 50여년간 교과서 출판을 이끌어왔다. 이 사장은 "교과서 출판은 인쇄, 정책, 편집 등의 새로운 모델을 만들어 내는 산파역"이라면서 "출판 문화 발전과 교육 향상을 위해서 교과서 출판에 더많은 관심을 가져야 한다"고 강조했다. 계원조형예술대학 출판디자인과 이기성교수의 부친이기도 한 이대의 사장을 만나 교과서인쇄에 얽힌 이야기를 들어봤다.

• KOREAN POULTRY JOURNAL
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• v.17 no.10 s.192
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• pp.36-39
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• 1985

우리의 속담에 이런 말이 있다. `사람은 즐거울 때는 부인을 찾지만 어려울땐 어머니를 찾는다` 어머니는 마음의 고향이기 때문에(사실은 우리 모두가 10개월간 살았던 본향이기도 하다) 어려울 때일수록 어머니가 그리워지는가 보다. 양계산업이 불안하고 경영도 점차 어려워지고 있다. 20년전의 양계를 그리워하고(그 때 양계인들의 뜨거운 협동정신을 말함). 업계발전을 위한 어떠한 전기가 오기를 바라고 있다. 우리나라의 양계산업 발전사를 보면 크게 20년을 주기로 새로운 장으로 바뀌어 발전해 왔다. 일제하의 양계에서 광복후 60년대 중반까지와 60년대 중반 이후 오늘날까지의 20년간의 근대양계산업으로의 발전 등이며, 이제 다시 계산물(계란, 닭고기)의 수입개방을 앞두고 국내 양계산업의 재정비 등 새로운 변화기를 맞아 불안해 하고 있다. 축산경영학회와 축산학회가 잇따라 양계산업의 안정화방안에 대한 심포지움을 개최하고 있어 변환기의 양계산업에 대처하려는 몸부림으로 보여진다. 이에 본지는 60년대 중반기 이후 장안양계친목회에서 가금연구회와 한국가금협회의 산파역으로 실질적으로 우리나라 양계산업의 근대화를 이끌어온 오봉국교수를 만나 보았다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.45 no.3
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• pp.195-198
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• 2000

Weedy rice has typical characters such as easy shattering, dormancy, and longevity. These characters let it undergo the winter and occur year by year, It is very difficult to control weedy rice once the field have contaminated with its seeds. Therefore, the control method for weedy rice was focused on the no-tillage direct seeding in this experiment. The germination ability of seeds shattered on the soil surface in the next spring was 92.7% in weedy rice, and 4.3% in cultivated rice. The possible depth of weedy rice emergence were 1.5cm, 3.0cm and 6.8cm in no-tillage, wet seeding and dry seeding paddy field, respectively. The paddy field contaminated with weedy rice was maintained as no-tillage, and then irrigated in early spring (April 15). We could induce weedy rice on the soil to emerge with irrigation, and then kill by using non-selective herbicide, paraquat. Weedy rice was controled 92.2% of total emerged by this method. After seedling establishment of cultivated rice, molinate, thiobencarb, oxadiazon, dithiopyr, butachlor were soil-applied to suppress the emergence of weedy rice seeds buried in the soil. Oxadiazon was the most effective to repress the weedy rice among soil-applied herbicides tested. The highest control value was 96.4% as the result of combination of paraquat and oxadiazon.