방목과 비료시용(肥料施用)이 산지초지개량에 미치는 효과

최진룡,송문태,김원영 경상대학교 축산진흥연구소 1986 畜産振興硏究所報 Vol.13 No.1

In order to investigate the effects of grazing and fertilization on the improvement of oversown pasture on the hill country, an experimental site was selected from the northern aspect of Namwon Branch of the National Animal Breeding Institute. Each plot, sized 15㎡, was fenced and native vegetations were grazed by nine sheep for three days to reduce the density of native vegetation and to open space for introduced pasture. Before sowing, lime(1.5t per ha) and phosphorus(690g per plot as super phosphate) were fertilized. Selected cultivars of Dactylis glomerata, Festuca arundinacea, Trifolium repens and Trifolium pratense were sown at the rates of 3.4kg seeds for grasses and 0.6kg for legumes per 180㎡. Legume seeds were inoculated before sowing. After germination, the grazing plot were grazed by sheep with 20 to 30 day-intervals. Herbage yield and botanical composition were measured with one-month interval after wintering. Herbage yield increased significantly in the grazed plots and the yield was doubled by fertilization. The yield of fertilized plots without grazing was comparative to that of grazed plots without fertilization. There was a significant improvement in the botanical composition, i. e. , 20 per cent grasses before improvement turned out 86 per cent introduced grasses at the end of three years from sowing on both grazed and fertilized plots. However, the improvement was retarded up to 35 per cent in the stated plots without fertilization. The initial 7 per cent of legumes increased up to 50 per cent in the grazed and fertilized plots, which is not comparable to 15μ per cent for grazed without fertilization. High proportion of native shrubs(73 per cent) rapidly decreased up to 2.3 per cent after three years from sowing. Conclusively, it was envisaged that the introduced pasture plants showed better response to grazing and fertilization, and that the hill land can be .improved effectively by fencing, fertilization and regular grazing immediately after seed germination.

한반도에서 지속농업의 실천방안 지속적 벼 생산체계 개발을 중심으로

최진룡,김정부,조영손 한국작물학회 1998 한국작물학회 학술발표대회 논문집 Vol.1998 No.-

In Korea, chemical fertilizers and agricultural chemicals have had a significant impact on food production and these are today thought to be an indispensable part of modern agriculture. On the other hand, socioeconomical and IMF and WTO status in Korea are constant reminders of the vulnerability of our fossil fuel dependent agriculture. A new crop production system to improve economic, environmental and production efficiency must be exploited. Our particular concern has been given to an integrated cropping system involving recycling of crop residues, soil and N management, biological N fixation and multipurpose legumes. As a new integrated crop production system, a no-till direct-sown rice-vetch relaying cropping system has been proposed in this paper. The formulation of this system is based on the conception that N fertilizers being neither limitlessly available nor affordable, the current high-input crop production systems have produced troubled results severe labour shortage ill rural areas, balance of payment, environmental degradation and reduction of human health far exceed economic concerns. A natural and logical consequence is that long-term sustainability of agricultural systems must rely on the use and effective management of internal resources. Based on the information obtained throughout a series of experiments last years we have proved that the no-till direct-sown rice-vetch relaying cropping system dictates biological alternative which can augment, and in some cases replace, N fertilizers. Comprehensive discussions were made for the proposed system and it concluded that the system can offer an economically attractive and ecologically sound means of reducing external nitrogen input and improving the quality and quantity of internal resources, and consequently improving the farmers as well as the national returns.

유효적산온도에 의한 싸이리지옥수수의 파종기결정

崔震龍,朱榮國,宋文台,吳豪祥,安東元 韓國作物學會 1990 한국작물학회지 Vol.35 No.3

발아최저온도를 근거로 조기파종 할수록 옥수수의 수량을 올릴 수 있다는 이론에 입각하여 남부지방에서 수원 19호를 조기파종할 때 몇가지 형질과 수량과의 관계를 구명하고자 1983년과 1984년의 2년에 걸쳐서 4월 13일부터 6월 2일에 걸쳐 10개의 파종기로 파종하고 그 성적을 분석하였던 바 아래와 같은 결과를 얻었다. 1. 파종시기가 늦어질수록 파종에서 유묘출현까지의 소요일수가 감소되는 경향이었으나 이러한 유묘출현일수와 감소효과는 지중온도의 증가와 밀접한 관련이 있었다. 2. 파종에서 유묘출현기간중의 유효적수온도(GDD)는 각 파종기에서 비슷한 값을 나타냄으로써 GDD 값은 조기파종기결정 기준으로서 이용할 수 있을 것으로 보였다. 3. 파종기가 늦어질수록 영양생장기간이 짧아졌으며 이는 건물량축적에 부의 효과를 나타내었다. 4. 수량과 강수량 온도 및 수량간에는 밀접한 관련이 있는 것으로 나타났으며 적산온도와 강우량이 많을수록 수량이 증가되었다. 5. 옥수수 파종기별 수량과 옥수수 발아최저온도를 고려할 때 남부지방에서 옥수수 파종기는 3월 26일± 3.6일로 추정되었다. In order to investigate the effect of sowing dates on some agronomical characters and yield of corn in southern part of Korea. a field experiment was carried out at Gyeongnam Provincial Livestock Breeding Station in chinju. Single cross hybrid corn (cv. Suwon #19) was sown from April 13 to June 2 with five-day interval in 1984 and 1984. The relationship between herbage and grain yield and various meterological measurements was evaluated. As the sowing dates were delayed. the days from sowing to seedling emergence were shortened, as more closely affected by the soil temperature at seedling emergence. growth period and was dependent on precipitation and temperature during the growth period. Based on the relationship between herbege dry matter yield of corn and soil temperature at seedling emergence, the estimated critical sowing date for corn in the southern Korea was March 23~pm 3.6 days.

大豆栽培의 省力化를 爲한 除草劑의 效果

張權烈,韓鏡秀,高美錫,崔震龍 慶尙大學校 1972 論文集 Vol.11 No.-

以上의 結果를 要約하면 아래와 같다. 1. 雜草發生率은 品種間에는 有意性이 없으며 약제간에는 Mon가 7%, Lark 31%, MA 32%로서 Mon가 雜草發生이 제일 낮았다. 2. 雜草重은 品種間에는 有意性이 없으며 약제간에는 Mon 12.5kg, LA 13.7kg, MA 15kg로서 Mon가 제일 적었다. 3. 除草劑의 처리에 의한 種實重量은 관행구에 비하여 Mon은 56.8%, MA는 55.9%가 감소 되었고 LA는 가장 낮은 46.7%가 감소 되었다. 4. 經濟性 分析의 結果 10a當 순수익으로 LA 3,463원 MA 2,736원 Mon 2,641원으로서 관행구의 868원에 비하여 除草劑의 처리에 의하여 순수익을 높일 수 있었으므로 除草劑의 導入이 時急하다. The objective of this study was to evaluate the three herbicides, Machete, Mon-097 EC, and Lasso for annual weed control in soybeans at the experimental farm of Gyeong-Sang College. The results were summarized as follows; 1. The ratio of weed was not shown significance among the varietieties, as shown Tables 1 and 2, but the significance was shown among the herbicides and the plot of Mon-097 herbicide showed lowest value, 7%, as shown in Table 1. 2. The weight of weed also was not shown the significance among the varieties but the significance was shown among the herbicides, such as shown in Tables 1 and 2. The weight of weed also showed the same tendency as the ratio of weeds. 3. The yields of treated soybeans showed lower yield than normal condition plot, such as Mon-51.8%, Ma-55.9%, La-46.7%, respectively. 4. According to the analysis of economic values, herbicide plots were got more net-income than normal condition plot. It is needless to say that herbicides had to be recommendable in this case.

남부지방에서 청예옥수수 재배와 유효적산온도와의 관계

최진룡,송문태,오호상 한국작물학회 1989 한국작물학회 학술발표대회 논문집 Vol.1989 No.-

일본 벼 품종의 Allelopathy 탐색과 전망

최진룡,송문태,조영손,송미광홍 한국국제농업개발학회 2000 韓國國際農業開發學會誌 Vol.12 No.1

Allelopathy has a potential in integrated weed management as a weed control strategy. Crop plants generally have the capability to exude allelochemicals into their surroundings, which can suppress the growth of weeds in their vicinity. In this paper extentive discussions were made on the agents of allelopathic activity and major research activities of allelopathic effects of rice in Japan, A series of experiments on selection for superior genotypes with allelopathic potential have been carried out with several rice cultivars or germplasms. Approaches to crop production that successfully reduce weed seed production can make farmers benefit by reducing management inputs and costs. Japanese allelopathy research team established a new testing method for the allelopathy potential in rice with the combination of biological test and field test. Among them, monochoria test was found to be most valuable for rice allelopathy test. Some old native rice cultivars of Pakistan, Philippines, and India were found to show high allelopathic potential than new cultivars of America and Japan. Upto date, although progress has been made in understanding the genetics of allelopathic activity of crop and successful genetic manipulation, further researches are required for a full degree of understanding of the genetic control of allelopathic activity in rice. Once the allelopathic genes are identified, a breeding program could be initiated to transfer the genes into modern cultivars and enhance their allelopathic activity in order to maximize weed suppression effects. Allelopathic research in rice should be cooperated with the research team of crop ecologists, soil scientists, agronomists, biochemists. plant physiologist, and farmers. This interest can be extended to effectiveness of cover crops, which is able to evaluate the allelopathy potential in the paddy field.

일본에서의 농산물과 다이옥신 현황

최진룡,최재원,송문태,조영손 한국국제농업개발학회 2000 韓國國際農業開發學會誌 Vol.12 No.1

Considerable interest has been focused on dioxins recently. In Germany since 1994, interdisciplinary and consummer-related investigations under the guidance of the Federal Ministry for Food. Agricultural and Forestry has reported the occurrence of polychlorinated dibenzoioxines and dibenzoflurances (called dioxins hereinafter) in foodstuffs and the contamination of foods by chemicals. In Japan, the government have given attention to the chemicals by enforcing the emergency laws for solving of dioxins from 1997. These case indicated the serious situation of the pollution from the dioxins. In this report, the chemical properties of dioxins, dioxins contents in several food stuff, the contamination pathway of dioxins to the food stuff and the nature of the degradation of the chemicals were broadly discussed. Special attention was also given to the problems by the chemicals and the solving methods of the agricultural practices in Japan. A particular interest is given to dioxins research team in Ehime University involved in investigating the content of the dioxins in the paddy soil and pathway of the chemicals. Their research effort have attributed to the finding of the contamination of Japanese paddy soil with the chemicals as well as the contents of the chemicals is considerably higher than safe standards. The major concern in present is that there will be no agricultural field with dioxins free and consequent exposure of men to the those hazardous chemicals through food-web system. The origins of the dioxins in the farm soil and agricultural product may be mostly from the herbicides and other agricultural chemicals. The chemicals may be accumulated in the plant and animal from the those contaminated soil and water. Half-time periods of dioxins reduction is longer than controllable and the cost of purification of the chemical from soil is considerably high. In conclusion, an imminent development and application of farming practice reducing dioxins in our agricultural environment is badly needed in order to conserve the earth and humankind in future.

자식성 작물의 잡종종자 생산을 위한 화학적 웅성불임성 유기

최진룡,김정교,빈영호,김석현 한국육종학회 1987 한국육종학회 학술발표회 발표요지 Vol.19 No.1

한반도에서 지속농업의 실천방안 : 지속적 벼 생산체계 개발을 중심으로

최진룡,김정부,조영손 한국육종학회 1998 한국육종학회 학술발표회 발표요지 Vol.30 No.3

P.K肥料 및 栽培時期의 差異에 따른 쌀 Amylose含量의 變異

崔震龍,金正敎,許文會 慶尙大學校 1976 論文集 Vol.15 No.-

쌀의 amylose 含量이 栽培環境 特히 P·K 肥料와 栽培時期에 따라서 어떻게 變異하는가를 究明하기 爲해서 P·K 를 0.12, 24kg/10a의 3水準으로 하고 N를 12kg/10a로 固定시킨 후, 栽培時期를 普通期와 晩期로 區分하고, 6個 品種/系統을 使用하여 행한 試驗에서 얻은 結果를 要約하면 다음과 같다. 1. 쌀 amylose含量 P·K 肥料에 따라서 各品種의 反應에는 一定한 傾向을 發見할 수 없었다. 2. 쌀 amylose含量은 P·K 肥料處理에 依하여 有意的인 變異를 나타내지 못하였다. 3. 晩期栽培한 벼는 普通期裁培한 벼에 비하여 쌀 amylose含量이 增加하였다. In order to find out the effect of P and K ferilizers and cultivating seasons onthe variability of amylose aontent in rice(Oryza sativa L.) 9 treatment composed of teh combination of three levelsof phosphorous and potassium ferilizers at the fixed nitrogen level were made in two cultivating seasons, ordinary and late, with six varieties/lines. The results obtained are summarized as follows: 1. Any tendency was not found among the responses of amylose content of varieties/lines to P·K fertilizations. 2. Amylose content of rice grain was not significantly variated by P.K treatments. 3. Late season cultture showed higher amlylose content than ordinary one.