It was supposed that CSA could be one of the best way to promote the movement of organic agriculture since there is little reliability on the organically grown food by consumer. In the replies submitted to a questionnaire to farmer and consumer, both group responded that the need of development of cultivation technique for organic farming and the permitted substances for organic farming and production. Both of them also replied that it is necessary to establish the lectures or division/department for organic agriculture in the agricultural education program of University.1)
Their response to CSA was so much positive that they are willing to participate the CSA farm as a active CSA farmers or consumers. Based on the evaluation of questionnaire survey, it was suggested to do the utmost efforts that farmer preferentially practice an organic farming, and consumer consciously buy an organic food to protect an ecosystem and environment pollution.
WTO체제에서 국제 경쟁력을 갖추기 위한 전략의 하나로 친환경농업을 추진해온 우리나라 농업은 환경오염의 경감과 농업의 다원적 가치의 실현을 위한 친환경농업 전문가 양성이 시급하며 이를 대학 교육에서 담당할 필요성이 높아지고 있다. 본 연구에서 4개 사례 대학의 교과과정 분석 결과 한국의 농학계 대학에서 이루어지고 있는 환경 교육은 대부분의 대학이 대학의 명칭이나 학과의 명칭을 변경하는 과정에서 생명, 자원, 환경을 포함시키고 교육 목표에서도 환경과 관련
For the development of Eco village in Korean rural area, it was focussed to introduce the rural style which has been developed intensively in European countries such as Denmark, England and Germany. As the main concept for Eco village it was explained briefly in the paper on the renewable energy(wind power park, bio mass and solar energy collector and heating system), eco architecture, methane gas device, living machine(wastewater treatment facility) and organic farming. It was also discussed how important the basic standard and guidelines for organic agriculture to run Eco village environmentally soundly as a whole system and why it is so much essential for the system. For this reason major principles of international applicable standard for organically grown foods by FAO/WHO Codex alimentarius was also shortly described. In the paper the Eco village concept was considered as a suitable model for Environmental Agriculture Districts Project which Korean government is going to establish at rural area in the near future.
In conclusion it was suggested that the positive participation of organic farmers, enthusiastic engagement of inhabitants and support strategy of government/NGO groups might play very important role for successful management of Eco village ecologically benign and economically sustainable after establishment.
본 논문의 목적을 위한 외인성 효소 즉 phytase, β glucanase, pentosanase는 전 세계적으로 양돈사료에 첨가제로서 광범위하게 사용하고 있다. 이러한 효소의 화학적 효과는 이해가 잘 되고 있다. 하지만 돼지에서 이러한 효소들의 효과에 대해서는 아직까지 논란의 여지가 있다. Phytase는 곡류내 존재하는 피틴태 인의 이용성을 증가시킬 수 있어 배설되는 분 중 인의 오염도를 낮출 수 있고 사료내 사용하는 무기태 인의 양을 감소시킬 수
This experiment was conducted to develop liquid fertilizer for leaf vegetable using the agricultural by products such as dry chicken dropping, bone meal, rice bran, soybean oil cake and fish meal. Combination of 50% dry chicken dropping, 30% bone meal and 20% rice bran among several combinations of by products was selected as materials for liquid fertilizer of head lettuce and cabbage. 50㎏ of materials with combination selected got mixed to 200ℓ of water, which kept under room temperature in greenhouse. EC and pH of fertilizer was stabilized after 35 days.
On the decrease of bad smell during fermentation, addition of materials such as bioceramics, woody vinegar and active charcoal was not effected. And on rapid fermentation, addition of microorganisms and sugar had a little effect, but decreased the content of inorganic nutrients. Fertigation of liquid fertilizer developed on cabbage by dropping made head weight increased by 0.9㎏ per plant and nitrate content decreased by 276ppm in comparison with chemical fertilizer which was 3.5㎏, and 2,426ppm, respectively. By use of organic liquid fertilizer developed in this experiment, yield of cabbage could be more obtained by 26% than in use of chemical fertilizer and income by 24%.
Nitrogen applied as fertilizer for crop production is partly absorbed by plant, and the remaining nitrogen in soil might be leached out through complicated processes to the subsoil layer. Especially, NO₃ N in leachate causes environmental pollution.
The purpose of this study was focused on understanding of uptake of nutrients by plants, the behaviors of nutrients in soil and the possibility of leaching loss when nitrogen fertilizer and completely decomposed compost were applied.
Lysimeters(Volume 0.15㎥, Diameter 62㎝, Height 62.8㎝) were installed for collecting leachate in the Jeju volcanic ash soils. Lysimeter study consisted of thirteen treatments:fallow, fallow with weeding, cropping without fertilizer and compost, three N fertilizer soil surface applications(16, 32, 64㎏/10a), three N fertilizer and compost soil surface applications(16+800, 32+1600, 64+3200㎏/10a), two water dissolved N fertilizer applications(16, 32㎏/10a), and low and high plant densities. N fertilizer was applied as urea. The growth of corn(preceding crop) and potatoes(succeeding crop) and leaching loss were determined during the experimental period. The results obtained were summarized as follows;
With increased N, pH of leachate tended to decrease and NO₃ N concentration of leachate increased. NO₃ N leaching loss was remarkably greater in soil from the bare plot without fertilization and the weed control than from plots with medium N rate and was least in the cropping plot without fertilization. NO₃ N concentration in leachates from the water dissolved N fertilizer application plots was 64% of that from the soil surface application plots. The concentration of Ca and K ions and the leaching loss of these ions were least from the cropping plot without fertilization and were greatest from bare plots(T1 and T2) without fertilization. The proportion of leaching and residual N in soil increased as N rate increased indicting that higher N rates increase the possibility of N leaching to subsoil layer. The proportion of N leaching losses was lower at the low N rate and the high plant density. In future, fertilization prescription which can maximize fertilizer use efficiency and minimize the pollution of ground water will be needed for conserving the environments.