© 1977 by Institute of Chartered Foresters
The Incidence of Root-Surface Fungi on Naturally Regenerated Picea sitchensis Seedlings in Southeast Alaska
Rothamsted Experimental Station Harpenden, Herts., England
The root-surface fungi were examined from naturally regenerated Sitka spruce obtained from recently exposed glacial outwash and mature upland soils where spruce had grown alone and in mixture with alder. Roots from the poorest trees on least fertile soil had a high incidence of Mortierella and few other fungi but as growth and soils improved the numbers and genera of other fungi increased The same genera occurred on roots from glacial drift and upland soils and were the same as those found on intensively grown seedlings from acid heathland soil at Wareham forest nursery in Dorest, England.