• Journal of Bio-Environment Control
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• v.28 no.1
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• pp.28-37
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• 2019

We designed a system that can automatically collect, convey, and control cool air of $15^{\circ}C-20^{\circ}C$ containing carbon dioxide from a mushroom cultivation house to a strawberry plastic house. We recorded the temperature at various positions from July to August 2017. The average temperature of the green house during day and at night was maintained at $33^{\circ}C$ and $26^{\circ}C$, respectively. In the moveable three-tier cylindrical bed, the average temperature around root was maintained at $26^{\circ}C$ and $21^{\circ}C$ during day and at night, respectively. On the high-bench in the green house, the temperature was maintained at $32^{\circ}C$ and $30^{\circ}C$ during day and at night, respectively. The carbon dioxide concentration was maintained around 800-1,600 ppm in the mushroom cultivation system and 400-800 ppm in the strawberry plastic house. The growth characteristics of the strawberry treated with moveable three-tier cylindrical bed were significantly different from those of the untreated high-bench bed. In addition, during the summer season, moveable three-tier cylindrical bed showed more tendency to increase in normal fruit number (NFN) and to decrease in defective fruit number (DFN) compare to the high-bench bed. Therefore, the moveable three-tier cylindrical bed showed a tendency to be more than 2 times higher yields than that of the high-bench bed. It was confirmed that ever-bearing strawberry cultivars could be cultivated in green house due to the cool air supply from the mushroom cultivation system in the summer season.

• Journal of Bio-Environment Control
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• v.17 no.3
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• pp.181-187
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• 2008

The structural stability of a simple-typed cultivation facility with a width of 5.6 m for growing Pleurotus ostreatus was analyzed by modeling the facility as three-dimensional steel frames. The computation was done by using the finite element analysis program, ANSYS and the criterion of determining structural stability was based on the allowable stress design (ASD). The computational results showed that the structure with a straight-typed bed column was more stable than those with other types of bed columns against snow depth but there was little difference against wind velocity. As results, the interval of rafter had a more influence on safety wind velocity than that of bed column, while the interval of bed column was more important to safety snow depth. Finally the bed column against buckling was stable in all cases considered in this paper.

• Korean Journal of Environmental Biology
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• v.25 no.2
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• pp.100-106
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• 2007

This study was carried out to investigate the species composition in the plastic greenhouse bed for cultivation of cucumber in June 2006. Four genera and seven species found are as follows: Aporrectodea trapezoides (Duges 1828), Aporrectodea tuberculata (Eisen 1874), Bimastos parvus (Eisen 1874), Amynthas koreanus (Kobayashi 1938), Amynthas corticis (Kinberg 1867), Amynthas hupeiensis (Michaelsen 1895), and Drawida japonica (Michaelsen 1892). Of them, Amynthas koreanus is Korean endemic species. Their descriptions are provided including photographs.

• Journal of The Korean Society of Agricultural Engineers
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• v.64 no.2
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• pp.27-35
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• 2022

Based on the current status of groundwater usage in the dry season through field surveys, this study tried to suggest countermeasures to reduce groundwater usage and to improve the water quality of baseflow from agricultural fields. For this purposes, basins with water curtain cultivation preceded were targeted where decreases of groundwater due to continuous use of groundwater in spring and winter annually observed. From monitoring groudwater usage of the study watershed, 130,058, 130,105 m³/day of water was pumped in during the water curtain cultivation period (October-February) in the Shindun, Seokwon watershed respectively. And the pilot application of the smart automated sensor-based water curtain cultivation system (smart WC system) developed in this study to reduce groundwater consumption has been conducted. As a result, the efficiency of the smart WC system when threshold temperature is set as 6.3 ℃ was 21.1% compared to conventional cultivation and efficiency increased as threshold temperature gets lower. Lastly, in this study, culvert drainage and Bio-filters were installed and rainfall monitoring was performed 15 times in order to analyze the baseflow securement and pollutant loads behavior. As a result, the test-bed with culvert drainage and Bio-filter installed together generated 61.4% more baseflow (4.974 m³) than the test-bed with only culvert drainage was installed (3.056 m³). However, the total pollutant load of all water quality contents (BOD, COD, T-N, TOC) except for the SS and T-P was found to be greater in the culvert drain and Bio-filter installed than in the culvert drain test-bed.

• Mycobiology
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• v.31 no.1
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• pp.50-53
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• 2003

Perforated vinyl mulching technique was performed on oyster mushroom beds for controlling mushroom diseases. Mycelium under vinyl sheets were safely protected from outside undesirable microorganisms. One of two mushroom farms showed 75% of disease incidence, the other 40% and National Institute of Agricultural Science and Technology(NIAST) 13% in the conventional growing method, whereas 12%, 14%, and 5% in the vinyl mulching cultivation method. Waterlogging caused mushroom bed worse, and Trichoderma spp. were infested on the conventional mushroom bed. Disease incidence investigated in other case was 25% to 30% in the conventional growing method, whereas 5 to 9% in the vinyl mulching cultivation method. Yields in conventional method were 6.5 to 7.2 $kg/m^2$ and those in vinyl mulching method were 7.6 to 8.1 $kg/m^2$. So it was suggested that vinyl mulching technique was good for prevention from disease and elevation of productivity.

• The Korean Journal of Mycology
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• v.43 no.2
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• pp.104-111
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• 2015

In this study, a new strain of Lentinula edodes (Shiitake) Poongnyunko was bred from dikaryotic KFRI 490 and monokaryotic KFRI 536 by Di-mon crossing method. In this study, the productivity was conducted through bed-log and sawdust substrate cultivation. The Poongnyunko showed significant intensive production from summer to autumn. Optimum temperatures of fruit-body formation were $17{\sim}24^{\circ}C$. The total amount of fruit-body production during 4 years by bed-log cultivation was $22kg/m^3$, and total yield of fruit-body until the 3rd flush was 648 g/ 2 kg. In case of sawdust substrate cultivation, the mycelial incubation period was 110~130 days. The suitable temperature and relative humidity were $18{\pm}1^{\circ}C$ and $90{\pm}5%$ respectively.

• Journal of the Korean Wood Science and Technology
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• v.26 no.1
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• pp.19-28
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• 1998

For cultivation on sawdust-bed of oak-mushroom until present time, inoculation of spawn on sawdust bed has been performed by sawdust spawn. But, liquid spawn may have advantages for rapid mass production of spawn, and now, sawdust-cultivation by liquid spawn inoculation should be applied instead of sawdust spawn. Therefore, investigations were performed to evaluate the effect of sawdust-cultivation by liquid spawn inoculation. The results were as follows: 1. When 11 kinds of liquid media were applied, the oak-mushroom culture medium was the most excellent in growth. Most suitable temperature at PDA was $25^{\circ}C$, and $22.5\sim27.5^{\circ}C$ in range were optimal for liquid culture. In liquid culture, amount of mycelial growth increases rapidly up to 40 days of cultivation. Incubation at fermentor brought yield of 106mg dry mycelia per 40ml media after 17 days. 2. In 1l-spawn bottle, growth of mycelium by inoculation of 20ml-liquid spawns were faster than 6g-sawdust spawn in spread of mycelia. On 2kg-bag culture, inoculations of 10ml-, 20ml- and 30ml-liquid spawns were all slower than 20g-sawdust spawn in mycelial spread. So, amount increasement in ampunt of liquid spawn should be discussed. Yields of mushrooms until third sproutings of 2kg-bag culture were 580g in 30ml-liquid spawn inoculation, but 510g, 486g and 470g from 20g-sawdust spawn, 20ml-liquid spawn and 10ml-liquid spawn, respectively. Thus, 30ml-liquid spawn inoculation was highest in yield.

• Landscaping Tree
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• s.85
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• pp.12-13
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• 2005

• Landscaping Tree
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• s.86
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• pp.14-15
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• 2005

• The Korean Journal of Mycology
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• v.35 no.1
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• pp.33-36
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• 2007

An attempt was made to investigate the status of harmful microorganisms occurring on different kinds of oak bed-logs during shiitake cultivation. As a result, totally 14 species of harmful microorganisms, including Trametes versicolor, were confirmed. Twelve kinds of harmful microorganisms were observed on Quercus acutissima, 9 kinds on Q. mongolica and 10 kinds on Q. aliena. Diatrype stigma, Hypoxylon truncatum, Hypoxylon sp. and Trichoderma sp. occupied 75.1% of the total harmful fungi occurred on Q. acutissima. H. truncatum and Trichoderma sp. occupied 71.2% of the total harmful fungi occurred on Q. mongolica. On Q. aliena, the occurrence of H. truncatum, Trichoderma sp. and Hypoxylon howeianum was 80.3%. D. stigma and Hypoxylon sp. were observed exclusively on Q. acutissima bed-logs, and the outbreak ratios were 51.6% and 13.1%, respectively. H. truncatum was observed on 46.6% of Q. aliena bed-logs and Trichoderma sp. was observed on 30.3% of Q. mongolica bed-logs.