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Themes: Pests And Diseases

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176 Search Results

  • Publications
    Forestry publication document

    [Archive] Studies on tree roots
    Lead Author: Forestry Commission
    This bulletin contains an account of investigations on the roots of young trees carried out over a series of years for the Forestry Commission by Dr. E. V. Laing of the Department of Forestry, Aberdeen University. Special attention has been paid to the association of fungi (mycorrhiza) with roots and to the development and action […]
  • Publications
    Forestry publication document

    [Archive] Nursery investigations
    Lead Author: H. M. Steven
    This Bulletin discusses the importance of nursery practice and the current methods employed. Only coniferous species are dealt with; broadleaved trees occupy a relatively small area in the new plantations. The bulletin shows that important improvements can be obtained by attention to tilth conditions (largely governed by the time of sowing), by treatment of the […]
  • Publications
    Forestry publication document

    [Archive] Beetles injurious to timber
    Lead Author: J.W. Munro
    This Bulletin discusses beetles which attack timber. They belong to various families of the order Coleoptera of which four groups may be recognised – longhorn beetles (Cerambycidae), pin-hole borers (Scolytidae and Platypodidae), powder-post beetles (Bostrychidae and Lyctidae) and furniture beetles (Anobiidae). The objective of this bulletin is to describe the insects and the damage done […]
  • Publications
    Forestry publication document

    [Archive] British bark beetles
    Lead Author: J.W. Munro
    This Bulletin deals with bark-beetles, a group of insects which is closely connected with forestry practice. It is the outcome of several years’ work and of first-hand study of the beetles both in the laboratory and in the field. The purpose of the Bulletin is to give an account of those bark-beetles which occur in […]
  • Publications
    Forestry publication document

    [Archive] The silver fir chermes
    Lead Author: R. Neil Chrystal
    This Bulletin provides information on the life-cycle of the silver fir chermes in Britain, as well as information on the relationship between the insect and its host tree, the silver fir, to ascertain how far the chermes was responsible for the death of the tree. The Bulletin also presents certain information collected by the author […]
  • Publications
    Forestry publication document

    [Archive] The Phomopsis disease of conifers
    Lead Author: Malcolm Wilson
    The fungus Phomopsis pseudotsugae, which has from time to time been known under different names, has a wide distribution in Britain and also occurs on the continent of Europe. It may attack both the green and the blue Douglas firs, the European and Japanese larches and Abies grandis among the silver firs. It is possible […]
  • Publications
    Forestry publication document

    [Archive] The Douglas fir chermes (chermes cooleyi)
    Lead Author: Forestry Commission
    This bulletin embodies the results of an investigation into the life history of Chermes (Gillettea) cooleyi Gillette, an American species of the family Chermesidae, which has made its appearance upon the Douglas fir in this country. The insect Chermes cooleyi lives partly on the Douglas fir and partly on the Sitka spruce. It is not […]
  • Publications
    Forestry publication document

    [Archive] Survey of the forest insect conditions in the British Isles 1919
    Lead Author: Forestry Commission
    A survey was started in May 1919, by the Interim Forest Authority, to ascertain the forest insect conditions in the British Isles, with special reference to felled areas and recently formed plantations. The main object of the survey was to determine the location, extent, and nature of the chief forest insect outbreaks and to decide […]