• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.12 no.6 s.105
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• pp.94-101
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• 1991

우리나라 수박재배에서 가장 큰 문제가 되는 병해는 덩굴쪼김병(만할병), 덩굴마름병(만고병), 탄저병, 역병(돌림병)이라 할 수 있다. 이외에 5$\~$6가지의 병이 발생하고 있으나 상기 4가지 병해에 비하면 발생면적도 적고 피해도 일반적이지 못하다. 덩굴쪼김병은 접목재배에 의하여 피해가 경감되고 있으나 수박재배 경험이 풍부하지 못한 농민들은 이 병해 때문에 실패하기 쉽다. 덩굴마름병은 특히 시설재배에서 피해가 큰데, 전생육기간동안 기온이 낮을 때 발생하므로 해마다 농민들이 골치를 앓는 병해다. 탄저병과 역병은 시설재배보다는 노지재배에서 훨씬 많이 발생하며 그 피해도 대단히 크다. 특히 이 병해들은 강우와 밀접한 관계가 있으며 약제를 살포할 여유도 없이 급진전하므로 잠깐 소홀히 한 사이 포장이 수박전체가 피해를 입는 경우가 허다하다. 여기에서는 앞서 이야기한 4가지 병해를 중심으로 발생생태와 효과적인 방제방법을 알아본다.

• Korean Journal of Soil Science and Fertilizer
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• v.41 no.5
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• pp.303-309
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• 2008

The physico-chemical properties of the rainfall interception culture (85 sites) and the open field culture soils (85 sites) in the area of Gochang-gun, Jeollabuk-do were surveyed. Soil textural distribution of the rainfall interception culture and the open field culture soils was 74% and 64% for silt loam, 16% and 35% for loam, and 10% and 1% for clay, respectively. The percentage of aggregate rates was higher in the open field culture soils (60.06%) than rainfall interception culture soils (55.84%). Electrical conductivity, exchangeable cations, and anions in the rainfall interception culture soils were higher than those in open field soils. Specially, accumulated amount of anion in rainfall interception culture soils was remarkably higher 2~3 times than open field culture soils. The results from the analyses of rainfall interception culture soils suggested that the most critical problem is the salts accumulation caused by over-fertilization of chemical fertilizer and compost. Therefore, application rates of chemical fertilizer and compost should be controlled in order to conservation of soil and water for sustainable agriculture.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.392-402
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• 2018

Citrus fruits can be classified as field citrus, greenhouse citrus, citrus produced by rain proof cultivation and late-harvested citrus such as Hallabong, Chunhaehyang, and Jinjihyang according to cultivation method or variety in Jeju province of Korea. The consumption of late-harvested citrus has been increasing steadily since 1990 because the sugar content of the fruits is ordinary higher than field citrus. The cultivation land of citrus produced by rain proof cultivation has been also enlarged continuously aided by Korean government support program and quality increasing effect of this cultivation method. However, the cultivation land of field citrus has been decreasing since 2010. In spite of such a decrease of cultivation land, recently the price of field citrus rather declined according to increasing of yield per 10a. For the estimation and forecast of the long-term supply-demand model in the field citrus, we constructed a partial balance model for the individual field citrus and estimated individual equation in each item's model by using the econometric method. As a result of the production storage scenario analysis, the cultivation area is expected to store 5%(14.49ha), 10%(14.97ha). 15%(15.50ha) of citrus production in 2027. This study reviews the structure of storage, and storability in Jeju field citrus and suggest several policy implications.

• The Korean Journal of Pesticide Science
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• v.7 no.1
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• pp.66-73
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• 2003

Actual pesticide usage in fruit vegetable cultivation was surveyed. Usage trend of in of vidual pesticides was evaluated to provide the data for the development of indicators of environmental impact and the production of safe agricultural products. The amount of the pesticides used for fruit vegetables was revealed in order of fungicide> insecticide> herbicide, showing that the portion of fungicide to the total amount used was about 70 to 80%. Main fungicides used on fruit vegetables were mancozeb, thiophanate-methyl propineb, etc while the insecticides were imidacloprid, milbemectin, methomyl, etc. Main formulation types of pesticide were wettable powder and emulsifiable concentrate. By different fruit vegetables and cultivation patterns, pesticide use per unit area was revealed red pepper (field cultivation, 13.2kg/ha), cucumber (field cultivation, 12.4kg/ha), sweet melon (field cultivation, 11.2kg/ha) as high pesticide use crops, meanwhile, water melon (greenhouse cultivation, 1.2kg/ha), sweet melon (greenhouse cultivation, 2.2kg/ha), strawberry (field cultivation, 2.8kg/ha) as low pesticide use crops.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.9 no.5
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• pp.96-103
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• 1988

최근 시설원예의 급진적인 발달로 계절에 구애없이 촉성, 억제재배가 보급되어 고등채소류의 생산량이 매년 증가되고 있다. 비닐하우스는 몇 년 전만 하더라도 도시근교의 집약농업으로 특수한 기술을 습득한 사람만이 할 수 있는 것으로 인식되었으나 현재는 도시근교는 물론 산간벽지까지 확대되어 누구나 노동력만 있으면 경영할 수 있는 보편화된 농업이 되었다. 이것은 그동안 재배기술의 발달과 우수한 품종육성, 농약개발등으로 이룩한 성과라고 믿는다. 시설재배는 노지재배와는 달리 일광과 환기의 부족, 밀식과 다비재배, 다습등으로 작물이 연약하게 생육되어 병에 대한 저항력을 갖지 못하여 각종 병해가 만연되기 쉽다. 따라서 시설재배에서는 작물을 건강하게 생육시켜 저항력을 증가시키고 환경조건과 비배관리에 유의함과 동시에 병해의 진단과 방제를 철저히 하도록 노력해야 할 것이다.

• Korean Journal of Soil Science and Fertilizer
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• v.43 no.6
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• pp.844-847
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• 2010

Water is the most important factor in crop cultivation. Water requirement of red pepper can be calculated based on the lysimeter experiments carried out by the RDA for 11 years about potential evapotranspiration, crop coefficient with climate data. The mean water requirement and total water requirement of red pepper in different growth stages are evaluated for two kinds of cultivation method.

• Journal of the Korea Convergence Society
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• v.9 no.7
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• pp.63-68
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• 2018

Research on smart farms centering on greenhouse cultivation is actively under way due to the decrease in agriculture population and aging, but in the case of vegetables such as vegetables, outdoor cultivation is 70%. Therefore, there is a need to improve productivity and prevent soil contamination by automating, cultivating, and intelligentizing the outdoor cultivation of agriculture crops. In this paper, we show the case of establishing a outdoor production system using the Internet of things and define the environmental variables in the outdoor production system. By measuring soil temperature, water content, electrical conductivity and acidity through sensors, LoRa communication module transmits the information to the outdoor production system. The outdoor production system controls the amount of fertilizer and the volume of water based on this sensor data. We have developed a system that manages a wide range of crops using LoRa technology, which is a suitable communication method for cultivating crops, and manages production volume and sales performance.

• The Korean Journal of Pesticide Science
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• v.10 no.2
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• pp.91-98
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• 2006

The objective of this study was to compare dioxin contents in spinach, soil and air and to evaluate the relation of dioxin concentrations in crop and its cultural environment. Sample weighing for the precise peak detection in dioxin analysis was also determined. The fragmentogram of HpCDFs, and especially OCDF, indicated different pattern from that of TeCDD/F, PeCDD/Fs and HxCDDs/Fs, which showed the same pattern. In case of field culture spinach (wet sample 2 kg) in Japan, peak of OCDF could be detected clearly, while market spinach (wet sample 1 kg) showed the only baseline detection. The result makes it possible to suppose the fact that production place of market spinach was not contaminated with OCDF, but atmospheric pattern of production place was similar to that of open field sample. So we could decide that the sample of agricultural crops were needed more than 2 kg in wet weight for the evaluation of precise peak The total tendency of dioxin concentration levels in field culture spinach may be affected by OCDD and HCDF distributed in soil. However, on the whole the major factor seems to be the atmospheric deposition.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1998.05a
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• pp.1-3
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• 1998

최근, 생표고의 수요가 급증하고 있으며 이의 주년적인 생산과 공급을 원활하게 하기 위해서도 시설재배가 필수적으로 요구되고 있다. 또한 정부차원에서도 표고 생산을 노지재배에서 시설재배로 점차적으로 전환시켜 생산성 및 경쟁력을 목표로 하고 있어, 머지 않은 장래에 표고의 생산은 상당부분 시설재배에 의존하게 될 것으로 전망된다. (중략)

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.265-266
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• 2021

In this paper, we show the case of establishing a outdoor production system using the Internet of things and define the environmental variables in the outdoor production system. By measuring soil temperature, water content, electrical conductivity and acidity through sensors, LoRa communication module transmits the information to the outdoor production system. The outdoor production system controls the amount of fertilizer and the volume of water based on this sensor data. We have developed a system that manages a wide range of crops using LoRa technology, which is a suitable communication method for cultivating crops, and manages production volume and sales performance.