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Mycorrhiza and tree nutrition in poor forest soils

Björkman, Erik (1970). Mycorrhiza and tree nutrition in poor forest soils. Technical Report. Stockholm: Predecessors to SLU > Royal School of Forestry, Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 83

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When fertilizing forest trees with nitrogen a great quantity is bound in organic humus compounds and cannot be utilized by the trees. Extensive reserves of bound nitrogen also exist in comparatively poor forest soils. However, it has been found that it is possible to release these reserves by inoculation with certain soil fungi of the litter-decomposing type. It does not seem improbable that such measures can represent a biological alternative to chemical fertilization. In the present paper it is shown how Boletus subtomentosus, that normally is a mycorrhiza forming fungus, can stimulate the development of pine plants. A physiological strain of this fungus is used which has the ability to decompose litter. The typical mycorrhiza fungus Boletus bovinus also stimulated the plant growth to a certain extent. However, the stimulating effect ceased when strong fertilization was used or when the light intensity was reduced. Constant illumination resulted in the plants developing well and with good mycorrhiza formation. When the period of illumination was reduced to 16 hours a day the plants developed less vigorously and the mycorrhiza formalion was reduced.

Authors/Creators:Björkman, Erik
Title:Mycorrhiza and tree nutrition in poor forest soils
Series Name/Journal:Studia forestalia Suecica
Year of publishing :1970
Number of Pages:24
Place of Publication:Stockholm
Publication Type:Report
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Plant and forest protection
Keywords:mycorrhiza, nutrition, forest soils
Permanent URL:
ID Code:5807
Department:Predecessors to SLU > Royal School of Forestry
Deposited By: Skogsbiblioteket Umeå
Deposited On:04 Mar 2011 00:00
Metadata Last Modified:02 Dec 2015 11:01

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