• Korean Journal of Organic Agriculture
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• v.22 no.1
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• pp.115-127
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• 2014

This study was conducted to select environmental friendly organic materials for controlling the main disease of Yuzu (Citrus junos Sieb). Meloanose caused by Phomopsi scitri and Scab caused by Elsinoe fawettii are the most common disease in Yuzu. In this study, of which Meloanose disease severity was severe at late of June corresponded with high humidity due to frequent rainfall at that time. In addition, occurrence of two disease have shown in old tree than young. After processing with environmental friendly organic materials, reduction of disease severity was 51~73% and 41~75% in case of Meloanose and scab, respectively. Based on result, environmental friendly organic materials tested in this study may source for controlling both Meloanose and scab diseases on Yuzu.

• Korean journal of applied entomology
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• v.49 no.3
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• pp.227-232
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• 2010

Toxicity of seven environment friendly agricultural materials (EFAM), which have been used in the domestic market were evaluated on honeybee (Apis mellifera) and asian multicolored ladybird beetle (Harmonia axyridis). Three EFAMs made from plant extract agents (Wangjoongwang Eco, Bogum Eco and Bestop Eco) and four EFAMs made from microbial utilizing agents (Worldstar Eco, Goodmorning, Bluechip and Cameleon) were investigated as EFAMs. In evaluation of toxicity on honeybee, the $RT_{25}$ values of 3 EFAMs made from plant extract agents ranged from 1 to 3 days. Therefore, honeybee should be released 1-3 days after application of these EFAMs. Meanwhile, the four agricultural materials made from microbial utilizing agents did not show any mortality against honeybee. In evaluating the toxicity to adult and larva ladybird beetles, all seven EFAMs made from plant extract agents and microbial utilizing agents to show any mortality.

• The Korean Journal of Pesticide Science
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• v.17 no.1
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• pp.41-49
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• 2013

This study was performed to investigate the cultivation pattern and perception, such as safety awareness, of environmentally-friendly organic materials among Korean farmers. The main reason for participation of the environmentally-friendly agriculture was for the production of safe agricultural crops. Compared to small-acreage farmer were more aware about the safety of environmentally-friendly organic materials to the subjects. Accordingly, 23.6% among the respondents with environmentally-friendly agriculture certification experienced the adverse effect by using the environmentally-friendly organic materials, compared to 33.8% of among the respondent without the certification. The experienced type of adverse effects consisted mainly 'eyes itch', 'hands and feet itch' and 'fatigue'. Also, respondent experiencing the adverse effects by using the environmentally-friendly organic materials more comply with the usage standard as how to use marked in wrapping paper, compared to the respondent without experiencing the adverse effects, which indicate that the compliance with the usage standard as how to use marked in wrapping paper is closely related the experience the adverse effects. Further study should be needed for more precise investigation of comment for the farmers in order to suggest the effective improvement in terms of policy or education for their safety.

• Korean Journal of Environmental Agriculture
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• v.25 no.1
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• pp.93-103
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• 2006

This study was undertaken to survey the usage of environment-friendly materials for 8 vegetable crops including cucumber, tomato, strawberry, eggplant hot pepper, lettuce, perilla leaves, and Welsh onion, cultivated under protected houses. Total of 78 environment-friendly growers in the Southern part of Korea were surveyed from 2003 to 2004. The number of materials used for a crop based on the effectiveness claimed by farmers was $21{\sim}87$ for pest control, $0{\sim}9$ for fertilizing, $2{\sim}41$ for growth promotion and $10{\sim}37$ for soil improvement. It is needed to clarify the ingredients and effectiveness of those environment-friendly materials reaching 323 items, on a science-basis in the future.

• Journal of Bio-Environment Control
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• v.20 no.4
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• pp.269-276
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• 2011

The aim of this study was to evaluate the effect of 3 environment- friendly farming materials on the growth of pepper and tomato seedlings under low level of solar radiation. The pepper and tomato seedlings were separately grown on commercial substrate and non-fertilizer substrate under 30% shading condition, respectively. The microbe-, enzyme-, and amino acid-supplements were used for the foliar application to the seedlings. The application of enzyme- and amino acid-supplements significantly enhanced the growth of tomato and pepper seedlings grown on non-fertilizer substrate, while there was no significant effect on the seedlings grown on commercial substrate. The foliar application of enzyme- and amino acid-supplements reduced the days to flowering by 3 to 4 days and lowered the node order of fruit set in tomato plants grown on non-fertilizer substrate. The results showed that the enzyme- and amino acid-supplements could enhance the seedling growth and lower the node order of fruit set under limited nutritional conditions.

• THE HEALTH and ORGANIC FARMING
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• no.211
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• pp.1-12
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• 2005

유기농업 연수회 유치 요청쇄도/유기재배에서의 윤작/맛 좋은 쌀 생산방법/쌀겨를 이용한 제초효과/유기농업의 기초/음주와 정신 건강/겨울철 실내건조 해결법/친환경농업 직불금 예산을 늘리자/우리아이들을 위해 학교급식은 유기농산물로 해야/농림부 친환경농업육성법 개정안 주요골자/친환경유기농산물 소비.유통의 활성화 방안/순환농업의 지역별 유형/국제기준에 의한 유기농산물 생산기술/토양전염성 병해/미생물 자재에 대한 올바른 이해/유기재배 쌀과 일반재배 쌀의 품질 특성 연구

• Life and Agrochemicals
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• v.26 no.5 s.208
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• pp.22-24
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• 2005

• Life and Agrochemicals
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• v.27 no.7 s.220
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• pp.14-17
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• 2006

• Air Cleaning Technology
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• v.17 no.1 s.64
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• pp.55-66
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• 2004

• Life and Agrochemicals
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• v.27 no.6 s.219
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• pp.22-25
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• 2006