A research on productivity of Cortinellus edodes (Berk) Ido et Imai cultivated on timber bed

골목일대(榾木一代)의 표고버섯 발생량(發生量)에 대(對)한 연구(硏究)

A research was made through a experimental cultivation during a period of 7 years (1956~1962) to determine the yearly yield, the total gross yield over 7 year's period and the maximum availability of stock timbers used as the germination bed of cortinellus edodes (Berk) Ido et Imai. The results are summarized as follows : (1) Research and plot scheme: Two experimental plots were established-plot "A" in the experimental forest of this college; plot "B" in the campus woods, 400 timber beds were furnished in each. The kinds of timbers used are : Quercus Serrata Thumb 140. Quercus acutissima Carr. 140, Quercus crispula BI 120. The environmental condition in plot "A" was better then that in plot "B" and the former showed greater yield than the latter. (2) yield : In plot "A" the total yield was 58.875kg and some of the timbers was still continuing germ in this seven after closing of the plot. In plot "B" the total yield was 56.90kg and after the sixth year no more germination was observed. In conclusion, plot "A" showed greater yield and longer germination than plot "B". (3) Germination efficacy and the kinds of timber: The best result was abserved on Quercus serrata, thumb Quercur acutissima Carr, stood next and then came Quercus crispula BI. Betula platyphylla was tried, but the result was worst. (4) Availability limits of timber beds: Quercus serrata Thumb with diameter 12~15cm had the longest availability more than (6~7 years) and Quercus acutissima Carr with diameter 12~15cm showed 6~7 year's availability. The shortest availability was found in Quercus crispula with diameter 6~9cm. Any kinds of timber with diameter 6~9cm had only 4~5 years of availability (5) In the table showing the yearly germination quantity, the figure of December and Jaunary of the 4th and 5th year shows the yield obtained in the semi-cellar paper house. This tells that there is good promise of winter cultivation of cortinellus edodes (Berk) Ido et Imai on matured timber beds.