Canadian Forest Service Publications

Shoot:Root ratio is of limited use in evaluating the quality of container conifer stock. 1995. Bernier, P.Y.; Lamhamedi, M.S.; Simpson, D.G. Tree Planters' Notes 46(3): 102-106.

Year: 1995

Issued by: Laurentian Forestry Centre

Catalog ID: 33715

Language: English

Availability: PDF (request by e-mail)

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Abstract

The ratio of shoot dry mass to root dry mass, or shoot:root ratio, is sometimes used to evaluate the drought avoidance potential of container conifer stock. A review of published data from plantation trials reveals, however, that this relationship does not hold for container conifer seedlings. It is argued that the particular cultural conditions of container production favor root proliferation beyond strict physiological needs and that, once outplanted, the root plugsoil interface imposes a stronger limit on water and nutrient absorption by the seedlings than the roots themselves.