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    Root morphology and stem size were evaluated as predictors of height and basal-area growth (measured at groundline) of 1-1 Oregon white oak (Quercus garryana Dougl. ex Hook.) seedlings planted in raised beds with or without an additional irrigation treatment. Seedlings were classified into three root classes based on a visual assessment of the fibrosity of their root systems. Early-season and late-season height and basal-area growth differed significantly among root classes after accounting for initial seedling size. Irrigation significantly increased late-season height growth, but not the other growth increments. Recommendations are made for grading seedlings to increase the growth of those that are outplanted.

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    Gould, P.J.; Harrington, C.A. 2009. Root morphology and growth of bare-root seedlings of Oregon white oak. Tree Planters' Notes. 53(2): 22-28.


    Garry oak, artificial regeneration, restoration, Pacific Northwest

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