Seedling Submergence Tolerance of Four Western Conifers
Submergence tolerance of 2-year-old conifer seedlingsDouglas-fir (Pseudotsuga menziesii (Mirb.) Franco), lodgepole pine (Pinus contorta Dougl. ex Loud.), Engelmann spruce (Picea engelmannii Parry ex Engelm.), and blue spruce (P. pungens Engelm.)--was determined by submerging entire seedlings for 0, 3, 7, 10, 14, 21, and 28 days under non-aerated and aerated conditions. Less than a third of the seedlings of all species survived for 14 days, and all seedlings except some blue spruce died after 21 days of submergence. Forty percent of submerged blue spruce survived 21 days of submergence, No seedling of any species tolerated 28 days of submergence. Aeration did improve survival in some cases. Tree Planters' Notes 42(2):45-48; 1991.
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Author(s): Ward W. McCaughey, T. Weaver
Publication: Tree Planters' Notes - Volumes 42, Number 2 (1991)
Section: General
Volume: 42
Number: 2
