Canadian Forest Service Publications

Quantitative assessment of the bacterial rhizosphere flora of Pinus contorta var. latifolia. 1975. Dangerfield, J.A.; Westlake, D.W.S.; Cook, F.D. Canadian Journal of Microbiology 21(12): 2034-2038.

Year: 1975

Issued by: Pacific Forestry Centre

Catalog ID: 1569

Language: English

Availability: Not available through the CFS (click for more information).

Available from the Journal's Web site.
DOI: 10.1139/m75-292

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The bacterial flora associated with root systems of young and mature lodgepole pine was investigated by sampling forest-grown trees. Counts were performed and expressed on a surface-area basis to give a more realistic comparison of organism density or activity within the control soil, rhizosphere soil, and rhizoplane. On this basis, densities increased by an order of 104- to 106-fold from control soil to rhizoplane, with the degree of stimulation being inversely related to root radius.