Skip Navigation

Forestry 1951 24(2):114-120;
© 1951 by Institute of Chartered Foresters
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by RISHBETH, J.
Right arrow Search for Related Content
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

BUTT ROT BY FOMES ANNOSUS FR. IN EAST ANGLIAN CONIFER PLANTATIONS AND ITS RELATION TO TREE KILLING

J. RISHBETH

Botany School, University of Cambridge

A short account is given of the incidence in East Anglia of butt rot of Douglas fir, larch, and spruce caused by F. annosus. The earliest stages do not differ from those found in the killing of pines; small living roots are infected by contact with stump roots containing the parasite. In young conifers killing is associated with a low resistance to invasion of all tissues. By the time conifers are about 25 years old, however, resistance has increased markedly. In pines all tissues tend to become resistant, checking growth of the parasite, whereas in the other species only the outer tissues become resistant. Thus in large roots of Douglas fir, larch, and spruce, F. annosus grows far more rapidly in the inner wood than in the outer wood and bark, from unaffected regions of which small branch roots may be formed. The parasite enters the butt from one or more rotted roots and may then ascend several metres in the heartwood. Secondary fungi are often present in such advanced stages of rot and interesting successions can be traced. The relation of butt rot to thinning is discussed and ways in which various factors may influence the disease are suggested.

Received 1 June 1950.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.