Investigations of the Cause of First-Year Stunting of Douglas-fir Seedlings in Bareroot Conifer Nurseries


We investigated several possible causes of 1-0 stunt in Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] in two fumigated bareroot nurseries. The results suggest that (1) delayed development of a root system contributes to seedling nutrient stress; (2) lack of ectomycorrhizae did not cause stunt; (3) root diseases were not involved; and (4) some soil microorganisms on root surfaces may have produced toxins that prevented nutrient-absorbing hair root development. We conclude that some combination of factors limits root system development, leading to nutrient deficiency, bud set, and stunting.
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Publication Tree Planters' Notes
Event 2007
Section 5
Author Linderman, R.G., Russell, K.W. & Tanaka, Y.
Published 2007/02/01
Volume 52
Number 1
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