Dynamics of Temperature and Humidity Changes in Lentinula edodes Sawdust Cultivation Sheds
2009
Koo, C.D., Chungbuk National University, Cheongju, Republic of Korea | Lee, H.Y., Chungbuk National University, Cheongju, Republic of Korea | Kim, J.S., Chungbuk National University, Cheongju, Republic of Korea | You, S.R., Korea Forest Research Institute, Seoul, Republic of Korea | You, C.H., Forest Mushroom Research Institute, Yeoju, Republic of Korea
The key for cultivating Lentinula edodes in sawdust bags with an appropriate strain and medium is to encourage the mushroom growth, while discouraging contaminating fungi by controlling environment, especially temperature and relative humidity (RH). To investigate the daily and seasonal fluctuation of temperature and RH in two L. edodes cultivation sheds types, HOBO data loggers was set and the collected data were analyzed. In a Taiwan type L. edodes cultivation shed, temperature and humidity changes were divided into five characteristic periods: mycelium growing winter, mushroom fruiting spring, mushroom fruiting early summer, mushroom nonfruiting summer and mushroom fruiting autumn. First, the mycelium growing winter was December to early March with daily mean temperature of -1~8℃. Second, mushroom fruiting spring was mid March to late May with daily mean temperature of 8~21℃ and day-night temperature difference of 15℃. Third, the Mushroom fruiting early summer was early June to early July with 17 to 25℃. Fourth, nonfruiting summer was mid July to mid August with daily mean temperature of 25~28℃. Lastly, mushroom fruiting autumn was late August to October with daily mean temperature of 10~23℃ and with cyclic temperature change by 7℃ decrease and 5 increase every 5 to 7 days. In a Chinese type shed, temperature ranged -1.9~5.0℃ during winter and 15~32℃ during June to October. Temperature and relative humidity changed 12~30℃ and 40~100%, respectively, depending on 0~150 cm shelf heights of by positions in the shed. In conclusion, to grow L. edodes but to discourage contaminating fungi, that is, not to be too high in temperature and RH, the growers changed temperature and RH by adjusting shading, aeration and insulation in the shed.
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