• Research in Plant Disease
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• v.25 no.2
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• pp.84-88
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• 2019

A variety of microorganisms in rhizosphere affect plant health by plant growth promotion, mitigation of abiotic stresses as well as protection from pathogen attacks. In our previous study, we selected a bacterium, Bacillus mesonae H20-5, for alleviation of salinity stress in tomato plants. In this study, we verified the effect of a liquid formulation of B. mesonae H20-5 (TP-H20-5) on fruit production and phytochemical accumulation including lycopene and polyphenol in cherry tomato and strawberry fruits in on-farm tests of protected cultivation under salinity stress. When vegetables including tomato, cherry tomato, strawberry, and cucumber were treated with TP-H20-5 by irrigated systems, final marketable yields were increased by 21.4% (cherry tomato), 9.3% (ripen tomato), 120.6% (strawberry), and 14.5% (cucumber) compared to untreated control. Moreover, treatment of TP-H20-5 was showed increase of phytochemicals such as lycopene and total polyphenol compared to untreated control in cherry tomato and strawberry. Therefore, these results indicated that a formulant of B. mesonae H20-5 can be used as a potential biofertilizer for increasing fruit production and quality.

• Korean Journal of Soil Science and Fertilizer
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• v.45 no.2
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• pp.280-286
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• 2012

Clean energy farming is the agricultural activity to improve an efficiency of agricultural energy use and to replace fossil fuels. This study was carried out to establish the clean energy farming system in the controlled cultivation of vegetable crop (cucumber) adopting the biogas production facility. In order to design the clean energy farming system, mass and energy balance was analyzed between the controlled cultivation system and the biogas production facility. Net yearly heating energy demands ($E_{YHED}$) of forcing and semi-forcing cultivation types were 48,697 and $13.536Mcal\;10^{-1}$ in the controlled cultivation of vegetable cucumber. To cover these $E_{YHED}$, the pig slurry of 511 and $142m^3\;10a^{-1}$ (biogas volume of 9,482 and $2,636Nm^3\;10a^{-1}$, respectively, as 60% methane content) were needed in forcing and semi-forcing cultivation types. The pig slurry of $511m^3\;10a^{-1}$ caused N 1,788, $P_2O_5$ $511kg\;10a^{-1}$ in the forcing cultivation type, and the pig slurry of $142m^3\;10a^{-1}$ caused N 497, $P_2O_5$ $142kg\;10a^{-1}$ in the semi-forcing cultivation type. The daily heating energy demand ($E_{i,DHED}$) by the time scale analysis showed the minimum $E_{i,DHED}$ of $7.7Mcal\;10a^{-1}\;day^{-1}$, the maximum $E_{i,DHED}$ of $515.1Mcal\;10a^{-1}\;day^{-1}$, and the mean $E_{i,DHED}$ of 310.2 in the forcing cultivation type. And the minimum $E_{i,DHED}$, the maximum $E_{i,DHED}$, and the mean $E_{i,DHED}$ were 5.3, 258.0, and $165.1Mcal\;10a^{-1}\;day^{-1}$ in the semi-forcing cultivation type, respectively. Input scale of biogas production facility designed from the mean $E_{i,DHED}$ were 3.3 and $1.7m^3\;day^{-1}$ in the forcing and the semi-forcing cultivation type. The maximum $E_{i,DHED}$ gave the input scale of 5.4 and $2.7m^3\;day^{-1}$ in the forcing and the semi-forcing cultivation type.

• Proceedings of the Korean Society of Plant Pathology Conference
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• 2003.10a
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• pp.87.2-87
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• 2003

Long-term repeated culturing of biocontrol agents on a certain medium often results in reduced biocontrol efficacy and altered physiology. Effect of culturing media on biocontrol ability and physiological state of Burkholderia gladioli strain B543 was investigated. Over 20 times repeated cultivation of B. giadioli strain B543 on Kings B medium or nutrient agar medium showed improved biological control of cucumber damping-off caused by Pythium ultimum, while one time cultivation on KB or NA did not. The repeated cultivation also induced the physiological changes of the biocontrol agent such as antifungal activity and the production of protease and siderophore. Our result indicates that adaptation to proper culturing medium can alter biocontrol ability and must consider in optimizing the use of biocontrol agents.

• Magazine of the Korean Society of Agricultural Engineers
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• v.40 no.2
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• pp.159-170
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• 1998

This study was initiated to investigate the applicability of the dredged soil from agricultural reservoirs on the crop cultivation. Four reservoirs were selected for this experiment, and properties of the dredged soils were analyzed physically and chemically. Soil textures were sandy loam(SL), silty loam(SiL), gravelly loam(GL), graveHy silty loam(GSiL), respectively. General chemical components, organic matter contents, main cations, heavy metals, etc. showed no adverse effects on crop growth. Tomato, cucumber, radish, Chinese cabbage were cultivated during 8 months period, in the soil treated with fertilizer and compost(Tmt.1), fertilizer(Tmt.2), compost(Tmt.3) and none (Tmt.4). Data for plant height, root zone depth and crop yield were collected and analyzed, and the yield for most crops showed increase as Tmt.1 >Tmt.2>Tmt.3>Tmt.4 by fertilizing methods, and as GL>GSiL>SL>SiL by soil textures. From the results, the crop cultivation using dredged soil was considered to be effective, due to its soil texture, organic matter content and fertilization.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.04a
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• pp.48-50
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• 2002

오이의 원산지는 열대지방으로 생육 적온이 25-3$0^{\circ}C$ 정도로 매우 높다. 그러나 사계절이 뚜렷한 국내 기후 특성 상 생육적온 이하의 환경과 이상의 환경을 경험하게 된다. 시설오이는 온실에서 재배되기 때문에 계절에 따라 고온과 저온 스트레스를 받기 쉽다. 이 가운데 환기를 적극적으로 실시하는 여름철과 봄, 가을에는 밀폐된 공간의 특성상 열집적현상으로 환기가 제대로 이루어지지 않아 고온장해를 받는 경우가 많다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.04a
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• pp.60-61
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• 2002

시설호박은 재배작형이 매우 다양하여 시설억제, 촉성, 반촉성 및 시설조숙 재배 등으로 실시된다. 또한 재배 품종도 애호박, 풋호박 및 츄키니 호박 등 소비 경향에 따라 다양한 양상을 보인다. 시설호박의 암꽃분화는 저온단일에서 유기되지만 수확하기 위해서는 개화 당일 오전 8시 이전에 수분이 제대로 되어야 하고 일기불순, 질소과다, 고온관리, 밀식 및 정지불량 등은 낙화나 낙과의 원인이 된다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.04a
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• pp.51-53
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• 2002

시설오이의 국내 재배면적은 2001년도에 5,412 ha 으로서 389천톤을 생산하였다. 재배작형은 시설억제, 촉성, 반촉성, 시설조숙 등 매우 다양하고, 재배작형과 지역적인 재배관습 그리고 소비경향에 따라 재배품종 또한 다양하다. 시설오이의 단보당 평균 수량은 7,184 kg 이지만, 이들 재배요인에 따라 단보당 수량이 지역별로 4배 정도로 차이가 많다. 즉 중부지방에서 무가온 시설조숙재배인 경우 과중이 120g 내외인 백다다기 오이를 4~5개월 정도 단기간 재배하기 때문에 수량이 단보당 3,500kg 정도이지만, 남부지방에서 7~10개월 정도 장기간 청장계 오이를 재배하는 경우에는 단보당수량이 12,000kg 이상을 넘는다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.04a
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• pp.63-65
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• 2002

삶의 질을 향상시키기 위하여 파생된 온실가스의 배출은 건조한 기후를 만들어 사막화를 가중시키고 있다. 이러한 건조지대가 늘어감에 따라 계절적으로 불어오던 대륙의 먼지바람이 주기를 달리하면서 한반도를 위시한 주변국에 영향을 미치고 있다. 최근에 발생하는 극심한 황화현상도 바로 이 때문이다. 특히 대륙으로부터의 황사는 1-10$\mu\textrm{m}$ 정도의 미세먼지가 주종을 이루고 있기 때문에 온실 피복자재에 부착되어 투광율을 떨어뜨리고 있다. (중략)

• Korean journal of applied entomology
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• v.21 no.3 s.52
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• pp.153-158
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• 1982

The study was conducted to obtain the basic information on the diseases epidemics of vegetable crops grown in Namji, Jinju, Gimhae and Suncheon under the extremely varied and specified conditions, plastic film house. The disease survey was conducted from the end of April, 1951 to April 1982. Leaf mold and late blight were serious foliar disease in tomato during the seedling stage, especially when the infected seeds were sown. The diseases increased rapidly 35 days after seeding. In both continuous cultivation of cucumber and rotation with upland crops, incidence of Fusarium wilt was severe while incidence of the disease was negligible in cultivations after paddy rice or grafting on pumpkin. Downy mildew of cucumber was severe in Jinju and Suncheon area, however, it was not so serious in Namji area where the growing season of cucumber was unfavorable for the maximum disease incidence. Cucumber mosaic virus disease was prevalent in the areas surveyed and the disease incidence was increased rapidly after June. Powdery mildew prevailed at the early stage of cucumber growth after transplanting in Namji area. Root rot and wilting caused by Phytophthora capsici was as the most destructive disease in pepper grown under the vinyl house, especially in Namji and Jinju area where the pepper has been cultivated intensively. The Phytophthora attacked most parts of young plants during the winter time and then induced crown rot on the adults plants. Cultivation of pepper in vinyl house was almost impossible because of the Phytophora disease by the end of June. Virus diseases to tomato plants were prevalent throughout the surveyed area and the damage was also severe. In Jinju and Gimhae area leaf mold and late blight showed high infection rate in tomato during the harvest time.

• Research in Plant Disease
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• v.10 no.2
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• pp.154-158
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• 2004

To analyze the relationship between CGMMV occurrence and seed contamination by cucumber cultivars, cucumber cultivars of CGMMV infected field and diseased degree were investigated in cucumber main cultivation regions of Jeonnam province from 1999 to 2002. While the diseased degree was different by years and cultivars, CGMMV occurred for 4 years in 'Janghyeongnakhap', for 3 years in 'Jangjukcheongjang', and for 2 years in 'Gyeoulsali' and 'Gyeoulnagi'. CGMMV was detected in seeds of 'Janghyeongnakhap' and 'Jangjukcheongjang' by ELISA test, and seed of 'Jangjukcheongjang' showed positive reaction in bioassay. As a result of resistant test of 34 cultivars to CGMMV, all cultivars showed mosaic symptoms in pot test but only 'Hanboksamcheok' showed mild mosaic symptom in field test.