우리 나라 有機農産物 品質認證制度에 관한 硏究

鄭淳宰,吳柱成,朴興植 東亞大學校 1998 東亞論叢 Vol.35 No.-

It shows a marked trend increasing the products of organic agriculture with growing interest in peoples health and safe foodstuffs. This is in the cause of the consuming public using habitually of safety and tasty organic agricultural products for reasons of environment pollution, environment hormone and etc. Now in Korea, organic agricultural products must be approved by our government of its quality, there fore organic agricultural products, that of transition period, non- chemicals agricultural products and less chemicals agricultural products are in cultivation separately. With the increase in number of consumers in future, we have to extend the products of the organic agriculture and have to control more strictly the quality guaranteed. Also, we must grope for developing of our organic agricultural products so that our producer can work with a strong will to attain self-sufficiency of our foodstuffs, paying our influence of environment.

苗令 및 硬化處理가 黃色種 담배의 初期生育 및 收量에 미치는 影響

盧載榮,安長憲,裵吉寬,申周植,李炅珉 충북대학교 엽연초연구소 1984 煙草硏究 Vol.11 No.-

This experiment was conducted to investigate the effect of seedling age, hardening time and hard-ening degree on the growth and yield components of flue-cured tobacco. Variety used was NC 2326. The results are summarized as follow; 1.Time of period from setting to topping, that from setting to the end of harvest, and that from topping to the end of harvest were longer in 50-day seedling than in 60-day seedling. And there was little difference of the time of period from sowing to the end of harvest between 50-day seedling and 60-day seedling. 2.C.G.R. was high in 50-day seed]ins than in 60-day seedling until the late maximum growing stage. In the 60-day seedling, growth continued late, and as a result of this, the stem height and number of leaves per a plant at topping time were higher in 60-day seedling. 3.The growth was most desirable in the recommended hardening(4.5ℓ/3.3㎡ ㆍ day ). The growth rate of severe hardening(1.5ℓ/3.3㎡ ㆍ day ) was high during the period from establishing to middle part of maximum growth. Se there was little difference of glowing characters among the plots of different hardening degree. 4.The leaf area of lugs and cutters was larger, and the weight of unit leaf area and percentage of dry matter in the plot of 60-day seedling were lower than those in other plots. 5.The leaf weight per plant, in the plot of recommended hardening was higher than that in the plots of without hardening and severe hardening. 6.There were little effects of tome of hardening on the growth and yield components.

곁순의 화학적 방제가 연초식물의 생장량에 미치는 영향

이재흥,석영선,신주식,정찬문 충북대학교 엽연초연구소 2001 煙草硏究 Vol.18 No.-

This study was carried out to compare the effects of suckercides - Fatty alcohol(FA), Maleic hydrazide(MH) and Butralin - on the sucker control and growing characters of flue-cured tobacco leaves. Among the three suckercides, Butralin was treated at three different times, one day before topping, topping day and one day after topping, and at two different concentration, 1/30 and 1/60 water solution. The results are summarized as follows. Suckercide treated plot showed higher growth and weight of upper leaves than not-treated plots did. MH treated plot decreased numbers, fresh weight and dry weight of suckers compared to the other treated plots, and made the leaves shape narrow. The effect of Butralin on sucker control was lower than that of MH, but higher than that of FA. The yields when treated Butralin decreased compared to the yields when treated MH. Though there were no significant differences of yields and growing characters of leaves among the plots of three concentrations and two times of treating Butralin, it is recommended to apply 1/60 water solution of Butralin at topping time.

苗床材料 및 硬化處理가 黃色種 담배의 初期生育 및 收量에 미치는 影響

盧載榮,申周植,李炅珉,金東永 충북대학교 엽연초연구소 1984 煙草硏究 Vol.11 No.-

This experiment was carried out to study the effects of hardening degrees, period of hardening tr-eatment and different seedling bed materials on the growth and yield components of flue-cured toba-cco. The results are as follows. 1.Extreme hardening decreased the amount of top, root and total weigh, and other growing cha-racters of seedlings 2.Growth of seedlings was very poor in the seedling bed filled with only sand, and good in the seedling bed filled with humus 6 : sand 4 ratio. 3.Amount of early growth after setting was larger in the plot of recommended hardening than in the plot of extreme hardening. The plants grown on the seedling bed filled with only sand showed poorer growth than any other plots. 4.The plants grown on the seedling bed filled with only sand, especially in the extreme hardening, had the smaller weight and poorer quality cutter. In the plants grown on the seedling bed filled with only sand and with humus 3 : sand 7 ratio, growth and yield components was shown a tendency inferior to the plants grown on the seedling bed filled with more humus. 5.Some characters related to the leaf quality investigated showed little differences according to the treatment. 6.The effects of period of hardening treatment on the growth and yield components were not significant.

播種期, 苗令 및 土壤水分不足이 黃色種 담배의 生育 및 收量에 미치는 影響

盧載榮,申周植,朴然圭,孫錫龍 충북대학교 엽연초연구소 1984 煙草硏究 Vol.11 No.-

This experiment was conducted to study the influence of environment cultural method and their interaction on the growth and yield components of flue-cured tobacco. Applied variety was NC 2326, and was treated by sowing time(Mar. 11, Mar. 21 and Mar.31), seedling age (40,50 and 60 day) and soil moisture stress period (20 days from 10, 20 and 30 days after setting). The results are summarized as follows. 1.During growing period, stem height, length and width of the largest leaf and total leaves were affected remarkably by the treatments. 2.Soil moisture stress period affected more the characters of tobacco plants than other factors. 3.The tobacco plant treated by early stage soil moisture stress (period from 10 to 30 days after setting) made the early growth very poor, and that tobacco plant showed poor growth until 45 to 50 days after setting. 4.Early sowing, 40 day seedling and early stage soil moisture stress made the plant type sylindrical, and late sowing and 50 to 60 day seedling made the plant type cone shape. 5.Number of total leaves and harvested leaves, leaf area per plant percentage of dry matter of leaf and specific leaf weight decreased by the treatment of soil moisture stress during early and middle part of maximum growth stage. 6.There were little differences of yield among the treatment of different sowing time and seedling age. Early sowing increased the thickness of leaf and weight per unit leaf area, and decreased number of total leaves and specific leaf weight. Number of total and harvested leaves and specific leaf weight of cured leaves were high in the plot of 60-day seedling 40-day seedling showed heavy weight of unit leaf area and low specific leaf weight of cured leaves. 7.From the point of view of interaction between sowing time and seedling age, early sowing (Mar. 11) with 60-day seedling, middle sowing (Mar. 21) with 50-day seedling and late sowing (Mar. 31) with 40-day seedling are recommended. 8.Rapid growth of early growing stage was shown in the plot of adequate soil moisture and late sowing (Mar. 31) with 50-day to 60-day seedling. 9.From the point of standard quality of cured leaves, sowing time can be shifted until late March. And to fix the sowing time, It should be considered that the maximum growth stage and the harvesting time of cutter and leaf would not match with severe drought of May and rainy season of early summer respectively.

우리 나라 유기농업의 현황, 문제점 및 개선방안

박흥식,오주성,구우서,정순재 東亞大學校附設 農業生命科學硏究所 1999 農業生命資援硏究 Vol.8 No.1

Recently government and general public have realized that recent agricultural practices have caused problems on soil properties, natural ecological systems, and environmental pollution also, due to the rapid economic growth, trade policy has to be advanced, import restrictions to protect domestic agricultural products are getting difficult in the international society. Trade liberalization will general marketing competition of our domestic agricultural products, and up with surplus problem. Now, environmental protectionism is getting popular, and organic farming is first initiated with main concern and submitted the national. proposal in the convention meeting of all agricultural societies. The aim of this paper is trying to report and discuss with you about present situation of organic farming research progress, on-going research, production aspects and problems or constrains in Korea.

관행농법과 유기농법의 비교연구

오주성,박흥식,정순재,정원복,진동호 東亞大學校 大學院 2000 大學院論文集 Vol.25 No.-

This study focuses on Comparative of conventional Agriculture and Organic Farming Among various kinds of environmentally sound farming practices the organic and Conventional Agriculture practices are chosen for this study. The main objective of this study is to evaluate the technological systems of organic farming practice in order to find the possibility of extending such technological system to the general farmers. Compared with the general farming practices, the organic farming requires many special technologies. Among them, technologies relating to compost making, pest, insect and weed control are different from those fo general farming practices. New technologies for the improvement of organic farming practices are developed or and imported from abroad by the organic farming association. As far as technology development for the organic farming, many research organizations between the goals of technology development of the conventional and organic farming system. In other words, land productivity of the organic farming technological system is lower than that of the conventional farming technological system.

播種期 및 育苗日數가 黃色種 담배의 初期生育 및 收量에 미치는 影響

申周植,盧載榮,裵吉寬,朴相一 충북대학교 엽연초연구소 1984 煙草硏究 Vol.11 No.-

This experiment was carried out to study the influence of different sowing time, seedling age (the degree of delayed setting) and seedlingbed materials on the growth and yield components of flue-cured tobacco. The variety applied was N.C. 2326, was sown on March 1,11,21 and 31. Those plants were transplanted on the seeding bed mixed humus with sand at the ratio of humus 9 : sand 1 and humus 3: sand 7, 25 days after sowing. Seedlings were grown for 40, 50, 60 and 70 days (from sowing to setting) on the seed bed and seedling bed, and set on the pots (1/5,000a) in the vinyl house. The results obtained were as forlows . 1.The amount of growth of seedlings increased by late sowing and delayed setting. 2.Until the time before the maximum growth stage after setting, stem heigth was larger in the plots of late sowing and delayed setting. After the middle part of maximum growth stage, the earner the sewing time was, the more remarkable the influence of seedling age on the stem elongation was and the larder the seedling age was, the more remarkable the influence of sowing time on the stem elongation was. 3.Stem diameter was large in the plot to late sowing until the early part of maximum growth stage but after the middle part of maximum growth stage the diameter was large in the plants sown at March 11 and March 21. 4.The number of leaves per plant increased by late sowing and delayed setting shown significant difference after maximum growth stage. 5.Late setting made the stem height high and number of leaves per plant more. The size of largest leaf was small in the plot of early sowing and large in the plot set after May 10. 6.It takes more days to reach a topping time from sowing and setting in the case of early sowing and early setting. 7.In early sowing plots, the leaf area of lugs and cutlers decreased by younger seedling age, and in late sowing plots, that decreased by older seedling age. The leaf area of leaf and tip at different treatments showed similar results, but in the plots sown at March 11 and 21, largest leaf was shown in the plot of 50- day seedlings. The area of green tip decreased by late seeding and delayed setting. As a result of theses the plant type showed sylindrical in the plot of early sowing and younger seedling age, and cone shape in the plot of late sewing and older seedling age. 8.The earlier the sowing time and the younger the seedling age were, the heavier the weight of unit leaf area of lugs and cutters, but there were little influences of different sowing time and seedling age on the weight of unit leaf area of leaf, tip and green tip. The percentage of dry matter showed similar tendency to the results of weight of unit leaf area. 9.Late sowing (March, 31) decreases the weight of a cured leaf. Weight of cured cutter was largest in the plots sowing March 1 and that of leaf tip and green tip was largest in the plots sowing March 11 and March 21. The weight of cured lugs was largest in 40 and 50-day seedlings, and that of tip and green tip was largest in 50-day seedlings. There were little differences of weight of a cutter and leaf among the treatments of different seedling age. 10.In 40- day seedlings, the area and weight of leaves per plant increased by late sowing, and in 70-day seedlings, those increased by early sowing. In 50 and 60-day seedlings, those were highest in the plots sown at March 11 and March 21. Largest weight and area of leaves per plant was shown in the plot set on May 10, and the plots set on April 10, and June 1 showed significantly low weight of loaves per plant. 11.Late sowing and older seedling age increased the leaf thickness of those leaves. Different sowing time and the seedling age did not influence on the leaf area contraction ratio and leaf thickness of leaf, tip and green tip. 12.There were significantly negative correlation between leaf area of lug and cutter and weight per unit leaf area, percentage of dry matter and leaf thickness of the lug and cutters, but no correlation between those characters of leaf, tip and green tip. Weight per unit leaf area correlated positively with percentage of dry matter and specific leaf weight in all stalk position. In the lug and cutter, weight per unit leaf area correlated positively with leaf thickness and negatively with leaf area contraction between weight per unit leaf area and leaf area contraction ratio. There were negative correlation between leaf thickness and leaf area contractions of lugs and cutters, and no correlation between those characters of leaf, tip and green tip. 13.There were not significant effects of seedling bed materials applied in this experiment on the growth after setting and yield components.

지속적 농업발전을 위한 유기농업전략

박흥식,정순재,오주성,최성관 東亞大學校 大學院 1999 大學院論文集 Vol.24 No.-

The economic impact on the environment and human health caused by conventional chemical intensive agriculture is causing scientist to re-assess the development of agricultural systems. Pesticides and processed chemical fertilizers have been shown to becausing environmental disruption which will nudermine the resource base on which agriculture production depends. The rise of sustainale agriculture, integrated pest management, organic agriculture, and other forms of alternative agriculture are a result of varmers and researchers searching for new solutions to the problem of food production which does not endanger the all important agriculture are a result of farmers and researchers endanger the all important agriculture resource base. Organic agriculture is one approach which has been developing more quickly in recent years with increasing consumer purchasing power. Organic agriculture has shown itself to be sa or more profitable, and in many cases as productive as conventional agricultural methods on some crops. Further development of organic agriculture, and low-input agriculture will require further modification of policies which overwhelmingly support high imput, chemical intensive agriculture.

잎담배生産과 裁培環境과의 關係에 關한 解析的 硏究 : 第十五報 土壤水分, 日射條件 및 摘芯時期가 잎의 形質에 미치는 影響 Part XV Effects of Soil Moisture, Solar Radiation and Time of Topping on the Leaf Characteristics of Tobacco Plants

盧載榮,卞珠燮,申周植,李鶴洙 충북대학교 엽연초연구소 1980 煙草硏究 Vol.7 No.-

This experiment was conducted to study the effects of soil moisture, solar radiation and topping time on the leaf characteristics of tobacco plants. The results are summarized as follows : 1.In the case of soil moisture deficient treatment, yield in the plot treated deficient soil moisture at early growth stage is more than that at later part of maximum growth stage. 2.Yield in the plot shaded at early growth stage is high and shading at maturing time made less the leaf area, weight of a leaf and yield. Shading before topping made low the percentage of dry matter. 3.There was little difference in yield at diferent topping time, but interaction between soil moisture content and shading effected significantly on the leaf characteristics.