This paper has large implications. It reports an experiment in which pine seedlings grown in prairie soil were found incapable of normal growth except when artificially provided with mycorrhizal fungi. It has been suspected for many years that mycorrhizal fungi are essential for the normal growth of forest trees. Unless mycorrhizal fungi are introduced in prairie soils through one means or another, the growth of trees planted in them may be unsatisfactory or completely lacking. The extensive program of afforestation in the prairie region as contemplated in connection with the shelterbelt project makes additional research on this problem imperative.
Document Type: Journal Article
Department of Botany, Oregon State College, Corvallis, Oregon
Publication date: January 1, 1936
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