• Journal of Practical Agriculture & Fisheries Research
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• v.22 no.2
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• pp.123-133
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• 2020

Four LEDs (blue, green, red, and white light) were tested to identify the most attractive wave length to utilize as the forecasting tools for the B. tabaci in glass houses. Attractiveness was evaluated by the total number of the B. tabaci attached to a yellow sticky trap. In the condition of no host plant supplement, the attraction efficacy was ordered from high to low as blue light (107.3±2.5), white light (83.0±12.1), red light (58±21.8), and green light (39.7±8.1). In the supplement of the host plant, the attraction was observed in the order of blue light (52±17.4), red light (38.7±5.8), green light (12.7±1.5), and white light (11.7±5.0). In both experimental conditions, blue light showed the highest attraction. In terms of the host plant effect to LED attraction, it varied following as white light (85.9%), green light (68.1%), blue light (51.6%), and red light (33.3%). This result suggests that red light is the least affected by the host plant. In the evaluation of the relative control efficacy, it was determined following as red light (66.7%), blue light (48.5%), green light (31.9%) and white light (14.1%) (F_3,8 = 14.7, P = 0.001). Taken together, blue light had a very high initial attraction, and red light was revealed low attraction effect by the supplement of the host plant. In field demonstration experiments, a high attractive efficacy was not observed due to low-temperature conditions, but similar higher attractive efficacy was observed in blue and red lights compared to the control. The commercialization of LEDs using red and blue in the future is expected to provide important information regarding B. tabaci population density forecast in glass house.

• Journal of Animal Environmental Science
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• v.15 no.1
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• pp.69-74
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• 2009

A survey questionnaire that addressed the issues to manure compost producers and users was prepared. The questionnaire addressed three main topics as follows: 1) types of manure treatment and composting facilities are being operated, 2) quantity of manure compost produced and used, 3) problems experienced in producing and using manure compost. A total of 30 manure compost producers and 10 manure compost users were interviewed. Solid manure are applied to composting. Slurry and wastewater are simplified aeration method to produce liquid fertilizer. The open elongated type manure composting are generally used on manure compost centers jointly used by several farms. The amount of annually manure compost production was most common in the range of $5{\sim}10$ thousand tons per manure compost center. The manure compost utilization and cucumber yield were mostly $6{\sim}15$ tons and $20{\sim}27$ tons per 10a of cucumber farmland, respectively. Environmentally friendly use both of manure compost and chemical fertilizer are recommended for natural recycling agriculture.

• Journal of Global Scholars of Marketing Science
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• v.5
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• pp.1-14
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• 2000

김해시에는 약 3,000개가 넘는 기계산업을 중심으로한 전국 두 번째로 많은 중소기업이 있다. 김해국제공항이 10km 이내에 있으며, 부산항과 마산항, 가덕신항만이 자동차로 30분 거리에 있고 서울, 대구, 광주로 가는 고속도로와 울산, 양산, 부산, 창원, 진주를 잇는 동남 공업벨트의 중심지로서 사통팔달의 최적 교통조건을 갖추고 있다. 또 남해바다 해양성기후의 영향을 받아, 화훼, 과수, 채소 등의 신선농산물 재배에도 최적이며 공항을 통해서 50분 거리의 후꾸오까와, 70분 거리에 있는 동경에 이들 농산물의 신속한 수출도 용이하다. 한편 김해시는 가락국의 가야문화권 중심도시로 국립김해박물과의 개관, 문화유적의 복원 등으로 관광도시의 면모도 갖추어 가고 있다. 김해시는 이러한 입지적 요건을 최대한 활용하여 다음과 같은 지역전략산업을 육성하여야 할 것이다. 첫째, 기존의 기계 자동차 금속산업은 지식집약형 기계산업(정밀의료기기 및 첨단 자동차부품포함)으로 특화하여야 할 것이다. 둘째, 화훼 및 농산물수출은 현대화된 재배시설 및 유통시설의 조성, 수출전문생산단지 조성, 대체에너지의 개발 등으로 수출경쟁력을 제고시켜야 할 것이다. 셋째, 기존 기계산업을 정보기술산업과 접목시키는 벤처기업의 육성으로 장기적으로는 하청구조의 산업구조톨 지양하고 기술개발을 통해 경쟁력있는 중소기업을 육성시켜야 할 것이다. 넷째, 유적, 화훼 등의 관광자원을 개발하여 부산과 제주도를 잇는 관광도시로 육성시켜야 할 것이다. 끝으로 인제대학의 특성화분야인 의생명공학을 중심으로 우리나라 최초의 헬씨어밸리(healthier valley)조성올 통해 생물 건강소재산업을 개발하는 것이 바람직 할 것이다. 이상의 특화산업들이 산업연관 효과를 가지고 조화있는 발전을 할 때 21세기의 경쟁력 있는 김해시 건설이 가능할 것이다.

• Journal of Bio-Environment Control
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• v.31 no.1
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• pp.52-59
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• 2022

Pest control treatment was carried out using an unmanned automatic pesticide spraying system that can spray pesticides on crops while moving autonomously to control pests in vegetable greenhouse. As a result of examining the control effect on tomato and strawberry on thrips (Frankliniella occidentalis) and greenhouse whitefly (Trialeurodes vaporariorum) pests, 85.6% of yellow flower thrips were found in tomatoes and 87.5% in strawberries, and 81.7% (tomato) and 80.6% (strawberry) of greenhouse whitefly. In addition, the control effect according to the pesticide treatment method showed a control effect of 81.7% of the chemical spraying treatment by manpower and 83.9% of the automatic moving pesticide spraying treatment (F=22.1, p < 0.001). When comparing the control effect between the two treatment sections, there was no significance, but the automatic transfer spraying treatment showed a 2.2% higher effect. On the other hand, as a result of comparing the spraying time of the drug, the automatic unmanned control sprayer had a spraying time of 5 min/10a, which took about 25 min less than the conventional manpower spraying time of 25-30 min/10a. Based on these results, it was judged that the automatic transfer spraying method could be usefully used for efficient pest control in the facility greenhouse during the peak period of development.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.2
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• pp.252-260
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• 2009

Whereas the numbers of childcare centers and kindergartens are increasing rapidly, systematic management to control the food safety of foodservice operation is not yet well established. Samples from 12 centers in Seoul and Gyeonggi Province were collected to assess the microbiological quality of 32 raw materials, 24 cooked foods, 76 food-contact surfaces (knives, cutting boards, dish towels and gloves), 17 employees' hands and 12 air-borne bacteria. The microbiological analyses were performed for aerobic plate counts (APC), Enterobacteriaceae, E. coli and 7 pathogens (B. cereus, C. jejuni, C. perfringens, L. monocytogenes, Salmonella spp., S. aureus, and V. parahaemolyticus). Among raw materials, E. coli ($1.39{\sim}2.08\;\log\;CFU/g$) were detected in 4 out of 6 meats and 7.46 log CFU/g of APC in tofu. High enterobacteriaceae levels of 4.23, 5.14 and 4.19 log CFU/g were found in cucumber salad, steamed spinach with seasonings and steamed bean sprout with seasonings, respectively. No pathogens were found in all samples except for C. perfringens detected from raw spinach and raw lotus root. Only APC and enterobacteriaceae were found in food-contact surfaces. Two of the 23 knives and three of the 24 kitchen boards showed over 500 CFU/$100\;cm^2$ of APC; also, APC levels (5.03 to 5.44 log CFU/g) were detected in 4 of the 12 dish towels. Only one glove showed Enterobacteriaceae (2.44 log CFU/glove) contamination. Enterobacteriaceae were found in 2 employees' hands ($2.37{\sim}4.44\;\log\;CFU$/hand) among the 16 employees. The contamination levels of air-borne bacteria were shown unacceptable in two (2.25 and 2.30 log CFU/petri-film/15 min) out of the 12 kitchen areas. These results suggest that the microbiological hazards in some foods and environments are not well controlled and thus a guideline should be provided to ensure the food safety in childcare center and kindergarten foodservice operations.

• Journal of Bio-Environment Control
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• v.30 no.4
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• pp.304-311
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• 2021

This Experiment was conducted to determine the effects of light shield materials when melon grown inside a plastic greenhouse in summer season. The average temperatures were 36.6℃, 34.5℃ and 34.0℃ respectively for the control(non-shield), coating agent, and the white net. The light transmittances were 69% and 75%, respectively inside the greenhouse treated with the coating agent and white net immediately after applicants, compared with that inside the control greenhouse. At the 40 and 80 days after treatment, the light transmittances for the coating agent were 92% and 98%, respectively, indicating it was slowly decomposed and removed, but there was no change in the transmittance for the white net. While the leaf number did not differ among the treatments, the plant height was higher in the white net and shading agent than in control. The weight of the leaves, fresh-weight and dry-weight were no different from that of shading, but it became heavier in the later stages. The marketable fruit yield was increased by 6% for white nets and 5% for the coating agent compared to control, there was no statistical significance. Therefore, coating agent is considered as an effective method to lower temperature during high temperature period, but it is preferable to use it in consideration of cultivation period, because the coating agent is gradually removed.

• Food Science and Preservation
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• v.5 no.1
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• pp.13-21
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• 1998

Korean medicinal herb extracts(KMHE) were applied to the preservation of greenhouse produce in order to prove their effectiveness. KMHE showed remarkable antimicrobial effects against Bacillus cereus, Peudomonas syringae, and Corynebacterium xerosis causing the postharvest decay of greenhouse produce. Among KMHE the extracts of Rheum palmatum L. and Coptis chinensis Franch most obviously inhibited the growth of microorganims causing the Postharvest decay of greenhouse produce, which destroyed to undetectable levels when treated with more than 500ppm of KMHE. The activities of KMHE were stable in the wide spectrum of pH and temperature. Direct visualization of microbial cells by using both transmission electron microscope and scanning electron microscope showed microbial cell membrane the function of which was destroyed by treating with the dilute solutions of KMHE. This change of cellular membrane permeability could be identified in the experiment that O-nitrophenyl-$\beta$-D-galactopyranoside(ONPG), the artificial substrate of $\beta$-galactosidase, was hydrolyzed in the presence of KMHE, indicating that the membrane was perturbed by KMHE.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.13 no.3 s.108
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• pp.98-105
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• 1992

고추에 발생하는 병해는 우리나라에 18여종이 있다. 그중에서 가장 중요한 병해는 두말할 나위없이 역병과 탄저병일 것이다. 세균성점무늬병(반점세균병)과 바이러스병(모자이크병, 괴저병)도 문제가 되고 있으나 앞의 두 병해에 비하면 발생도 국부적이고 피해도 훨씬 가볍다고 할 수 있다. 이 네가지 병해는 우리나라 고추 주산단지의 연작 장해현상과 밀접한 관련을 가지며 연작에 의하여 발병이 심화되는 대표적인 병해다. 이밖에도 고추에는 잿빛곰팡이병, 균핵병, 흰가루병등의 공기전염성 병해들이 시설재배지의 특수환경과 관련하여 점차 발생이 늘어나는 추세에 있다. 여기에서는 고추에서 가장 문제가 되고 있고 농민들이 방제에 큰 어려움을 겪고 있는 역병과 탄저병에 대하여 그 효과적인 방제대책을 알아본다.

• THE HEALTH and ORGANIC FARMING
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• no.226
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• pp.1-12
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• 2006

5.31지방선거 때는 '친환경농산물 학교급식고약' 후보를 밀자!!/'칼로스 쌀' 무릎 꿇었다!!/우리의 산야초-오가피나무/인산이 작물에 왜 중요한가?/웃음에 대한 이야기/꽃 이름 속에 숨은 자연의 상형문자들/제2차 친환경농업 육성목표와 방향/두가지 비료로 유기농작물의 고품질 다수확 생산을 체계적으로 보다 쉽게 하는 방법/식물세균병 방제를 하려면/시설내 병해의 생태와 방제 잿빛곰팡이병/농업용수도 좋은 물을 사용해야 한다./4월중 본협회 친환경농산물인증 연장 및 신규획득농가/해충의 습성을 이용한 퇴치/유기농인상 후보자 추천 공고/유기 및 일반 농산물의 품질 비교에 관한 연구-채소, 감귤과 쌀을 대상으로-/과수의 적심

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.07a
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• pp.261-266
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• 2002

1992년 이후 우리나라 원예시설 면적은 매년 크게 증가하여 2000년 말 현재 48,853㏊에 이르고 있으며(농림부, 2001), 그중 양액재배 면적은 '92년에는 13.2㏊에 불과하였으나 연평균 64%씩 증가하여 2000년에는 700㏊에 이르렀다. 이들 양액재배 면적 중 채소류가 70%, 화훼류가 30%를 차지하고 있으며, 작물별로는 토마토가 37%로써 가장 많은 면적이 재배되고 있고, 그 다음으로 장미가 25%를 차지하고 있다. 또한 사용하는 배지별 양액재배 비율은 펄라이트 배지가 319㏊로 전체면적의 46%를 차지하고 있으며, 암면배지가 26%, 혼합배지가 17%를 차지하고 있다(농촌진흥청, 2001). (중략)