Abstract
To protect acorns of oaks from dehydration and keep their germiability at a greening site, the acorns of Quercus serrata, Q. phylliraeoides, and Q. myrisnaefolia were put in a paper cylinder of 30cm in length and 38mm in diameter with a soil and humus mixture as a germination medium. They were applied on a site after a large-scale forest fire in August 1994 at Mt.Ouji in Tamano, southern part of Okayama Prefecture, from May 1994 to May 1996. Results obtained during two growing periods ware as follows; Germination rates of Q. serrata, Q. phylliraeoides, and Q. myrisnaefolia were 66.7%, 70.0%, and 77.8% respectively, and these rates were higher than those on the stick devices covered with oiled paper and fed no manure. Survival rates of them after two growth periods were more than 90%. Their height after two growth periods was twice or three times larger than the height after the first growth period. These results suggested that our stick type greening device could be successfully applicable to a site after a large-scale forest fire.
