• Life and Agrochemicals
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• v.26 no.8 s.211
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• pp.42-45
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• 2005

농약 오해 많아, '전문지식 부족 · 무책임한 정보'로 안전성 판단해선 안돼 유기 · 무농약농법 '농약 우산' 속서 일부 가능, 경제적 · 안전방제법 세계유익

• Korean Journal of Organic Agriculture
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• v.8 no.3
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• pp.131-146
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• 2000

This experiment was focused on finding out the potential problems in organic farming system, which is recently emphasized on the produce of horticultural crops due to the serious environmental deterioration. Thus, in this study, the effect of the application of organic farming materials in soil on plant growth and components of chinese cabbage and the soil Physicochemistry property were compared with conventional culture. The results were summarized as follows : 1. The effect of soil chemical properties after application of organic farming materials, The amounts of pH and O.,M. in N, P, K treated plot were few of change, To the contray, fermentation compost and microorganisms fermentation compost treated plot were some increase, Amount of P$_2$O$_{5}$ , Ca and increase in comparison with the N, P, K treated plot, Specially chicken manure+ microorganisms fermentation compost treated plot was the highest. 2. Change of soil microbial after application of organic farming materials, The number of bacteria and actinomycetes in N, P, K treated plot were appeared definite direction, to the fermentation compost and microorganisms fermentation compost treated plot showed the increased tendency, specially, chicken manure+ microorganisms fermentation compost treated plot was the highest, 3. The growth characteristic of chinese cabbage after application of organic farming materials was superior in order of chemical fertilizers plot> microorganisms fermentation compost plot> fermentation compost plot. It shows the NO$_3$$^{[-10]}$ accumulation in chinese cabbage was higher in the outer leaves than in the inner leavess. It was some lower in the microorganisms fermentation compost plot, it was the highest at chemical fertilizers plot , all inner and outer leaves.

• Korean Journal of Organic Agriculture
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• v.24 no.2
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• pp.253-262
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• 2016

The SS (Bacillus subtilis 10%), WS (Microbial extract 70%), and DS (Sulfur 78%) agents were selected by mycelial growth inhibitory effect test against kiwifruit soft rot pathogen (B. dothidea) with 11 kinds of environment-friendly agricultural materials on PDA medium for 10 days. They showed at 94.2%, 65.2%, 58.9%, respectively. The control value of WS and SS agents were better than DS in storage experiment. It was effective SS and WS single application, DS-WS and WS-SS alternate application in the field trial.

• Korean Journal of Organic Agriculture
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• v.13 no.3
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• pp.291-300
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• 2005

Diseases were surveyed in 5 Rice paddy field areas of Organic paddy field and conventional paddy field. The 3 major diseases, rice leaf blast, bacterial leaf blight and sheath blight in rice were surveyed at duck raising, rice bran and conventional rice paddy field. They were serious in duck raising paddy field, rice bran paddy field more than conventional paddy field. The Ilpum variety were infected seriously more than Chucheong. At the effectivity test of the environment-friendly substance for the rice-seed sterilization, 1000-times diluted brown-rice vinegar showed controlling effect against Bakanae disease, and germination rate also was good. There was no Weeds Control efficacy by cultivating of hairy vetch in rice paddy field. However, extract of hairy vetch Leaf and root repressed the germinating of lettuce seed.

• Research in Plant Disease
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• v.26 no.4
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• pp.202-209
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• 2020

Organic farming is necessary to sustainable agriculture, preserve biodiversity and continued growth the sector in agriculture. In organic farming, reduced usage of chemical agents that adversely affect human health and environment, employing amino acids and oil cake fertilizer, plant extracts, and microbial agents are used to provide safe agricultural products to consumers. To investigation microbiome structure, we proceeded on the pepper plant with difference fertilizers and treatments in organic agriculture for three years. The microbial communities were analyzed by the next generation sequencing approach. Difference soil microbiota communities were discovered base on organic fertilizer agents. Occurrences of virus and anthracnose diseases had a low incidence in conventional farming, whereas bacteria wilt disease had a low incidence in microbial agents treated plots. Microbe agents, which applied in soil, were detected in the microbial community and the funding suggested the applied microbes successfully colonized in the organic farming environment.

• Korean Journal of Organic Agriculture
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• v.21 no.4
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• pp.617-627
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• 2013

This study was conducted to survey the current pest occurrence and grower's pest management practices, and to investigate biodiversity including birds, snakes, rodents, and amphibians in organic pear orchards. From the questionnaires and field survey of 22 organic orchards in 2010, the materials such as lime sulphur, plant extracts and their mixtures with microorganisms, and oils were preferred over insecticides. Scab, mealybugs, woollybugs and barkminers were the major pests for organic pear growers. Environment-friendly fungicides and insecticides were applied 9 to 10 and 5 to 6 times respectively. Incidence and severity of scab on Niitaka pear fruits in organic orchards was higher than in conventional ones. Whereas for mealybugs there was no significant difference between organic and conventional orchards. Pear fruits in organic orchards were significantly smaller than those of non-organic orchards. For the biodiversity of amphibians, snakes, pheasants, and rodents, there was no significant difference between organic and conventional orchards, but Rufous turtle doves were monitored more in organic areas than in conventional ones.

• Journal of the Korea Organic Resources Recycling Association
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• v.29 no.2
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• pp.15-23
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• 2021

This study was conducted to evaluate the field application of the developed recommendation system in organic rice (Oriza sativa L.) paddy and to investigate the mineral nitrogen content in soil and rice productivity. According to the developed system, hairy vetch (HV), rye+rapeseed oil cake (R+OC), rapeseed oil cake (OC) for only basal fertilization (OC-B), OC for split application (OC-S), pig manure compost (PMC), and chemical fertilizer (CHM) were applied to paddy soil at the rate of 107~133 kg N/ha. Results were followed, unhulled rice yield of OC-S (111%), OC-B (110), R+OC (106), HV (101), and PMC (96) were no significantly different with CHM (100). Also there was positive correlation (R²=0.803^*) between unhulled rice yield and cumulative inorganic N in soil. For nitrogen use efficiency of rice, OC-B, OC-S, and R+OC were not significantly different with CHM. In conclusions, the developed organic materials use recommendation system was effective for organic rice productivity. It could be useful for organic farmer to apply the organic materials use recommendation system for rice.

• Korean Journal of Organic Agriculture
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• v.22 no.3
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• pp.445-455
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• 2014

The pear sucker (Cacopsylla pyricola) is the most important insect pest in Korea. The hatching rates of overwintered adults laid eggs were observed at 10, 13, 18, and $22^{\circ}C$. The liner model was draw as Y=0.00277X+0.00146(Y=developmental rate, X=temperature) about temperature and developmental rate to eggs. The developmental threshold temperature to eggs was assumed about $-0.83^{\circ}C$. The egg hatching timing over 50% as the accumulated temperature by day maximum temperature $6^{\circ}C$ over from 1st February in 2008, 2009 and 2011 was 429.7, 417.6, and 424.3 degree $^{\circ}C$, respectively, was 3 to 7days before full blooming in pear orchard. On the other hand, the abamectin 1.8EC, lime sulfer, machine oil and 13 kinds of eco-friendly materials were not shown the control effect to the eggs. To mixed stage of pear sucker, the eco-friendly materials over 90% control value were 4 kinds such as a mixture of Azadiractin A+B, Nimbin, Salanin, Meliantriol and Vepol after twice application as 21st May and 5th June in pear growing season, in 2012.

• Journal of Korean Society of Rural Planning
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• v.17 no.4
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• pp.25-38
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• 2011

본 연구는 방글라데시의 친환경농업 실태와 농업인들의 인식을 바탕으로 친환경농업 개발에 대한 정부의 역할과 정책적 대안을 모색하고자 하였다. 연구 자료는 방글라데시 탕가일 지역의 농업인을 대상으로 유기농가 100가구와 일반농가 100가구를 무작위로 추출하여 설문조사를 통하여 수집되었다. 인구 과밀의 방글라데시 정부는 식량안보를 위하여 지력 저하 및 환경악화를 방지하고자 많은 노력을 기울이고 있다. 즉 지속 가능한 농업개발을 위하여 통합해충관리(IPM), 통합작물 관리(ICM)를 비롯하여 토양의 비옥도 개선, 페로몬트랩이나 자연 천적을 이용한 해충방제 등 다양한 프로그램을 운영하고 있다. 농업인들의 의견 조사에 따르면 친환경농업에 대한 정부의 역할은 긍정적으로 평가하고 있으나 정책이나 관련 프로그램은 아직 부족한 것으로 나타났다. 일반농가인 경우 극히 소수 농가만이 친환경농업을 실행하고 있는데, 이는 관련기술에 대한 지식의 부족과 유기농 비료 등의 자재 부족이 친환경농업을 실행하는데 가장 큰 어려움이라 지적하고 있다. 일반농가의 39%는 유기농업 의사를 보이고 있지만 마케팅시설의 부족과 농사 실패에 대한 두려움 등을 유기농으로 전환하지 못하는 주요 이유로 들고 있다. 일반농가의 일부(17%)만이 정부의 농업교육 프로그램임인 통합해충관리(IPM)과정을 이수하고 있다. 정부의 유기농 정책은 거의 전무하며 NGO들의 지원에 의하여 꾸준하게 진행되고 있을 뿐이다. 따라서 농업인들은 통합해충관리(IPM), 유기농 퇴비, 페로몬트랩이나 자연 천적 등 매우 다양한 농민교육프로그램들을 정부 주도적으로 실시하여야 하며 친환경농업정책을 보다 명확하게 규정하기를 요구하고 있다. 비교적 젊고 교육수준이 높은 소규모 농업인들이 유기농에 적극적임을 알 수 있다. 유기농의 평균 농지규모는 0.246ha, 유기농 평균 경력은 7.63년, 일반농가대비 농가수입은 11.4% 높게 나타났고 비교적 소농들이 높은 수익률을 보이고 있다. 소비자의 신뢰, 마케팅시설, 생산자단체나 조직의 부족 등이 유기농가들의 가장 큰 애로점이 되고 있고, 유기농산품의 표준화를 위하여 정부의 인증제도와 인증기관 설립이 필요함을 지적하고 있다. 유기농을 보다 활성화하기 위해서는 정부 주도하에 마케팅을 비롯하여 교육, 수출 및 각종 장려책 등이 마련되어야 할 것이다.

• Korean Journal of Environmental Agriculture
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• v.17 no.4
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• pp.319-323
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• 1998

This experiment was conducted to investigate the effects and properties of organic materials, the fermented fowl droppings composts and the top viviparous malleatuses, utilizable for rice farming. At the 35th day after transplanting, the growth of rice plants was good in the order of organic farming, combined farming, conventional farming, and control plot. But stem number and dry weight of rice plant in organic farming decreased a little compared to those in conventional farming at the 65th day after transplanting. Rice yield decreased by 7% in organic farming and by 4% in combined farming compared to those of conventional farming. Weeding effect by inoculation of 5kg or 10kg of the top viviparous malleatuses per 10a was similarly 96% at the immediately inoculation after transplanting, 98.6% at the 7th days inoculation after transplanting and 70% at the 15th days inoculation after transplanting. By inoculation of 5kg per 10a at the 7th day and the 15th day after transplanting, rice yields decreased by 2% and 5%, respectively, compared to those of the conventional farming method. From the above results, it seems that the organic farming and the combined farming are useful and the inoculation of the top viviparous malleatuses is effective for control of weeds as the environmental preservation farming.