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Competition Effects in Juvenile Jack Pine and Aspen as Influenced by Density and Species Ratios
R. E. Farmer, D. M. Morris, K. B. Weaver and Karen Garlick
Journal of Applied Ecology
Vol. 25, No. 3 (Dec., 1988), pp. 1023-1032
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2403763
Page Count: 10
You can always find the topics here!Topics: Plants, Seedlings, Pure stands, Species, Crops, Plant growth, Plant competition, Growing seasons, Crop density, Greenhouses
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(1) Jack pine (Pinus banksiana Lamb.) and trembling aspen (Populus tremuloides Michx.) seedlings were grown in replacement series (100, 75. 25, 50 : 50, 25 : 75, 100) at variable densities (17 to 10 000 plants m-2) for 12 weeks in a greenhouse experiment and for 3 years in a field test. (2) Analyses of survival, height, weight, form, resource allocation, relative yields and relative crowding coefficients indicated that aspen dominated in all mixtures and densities except 10 000 plants m-2
Journal of Applied Ecology © 1988 British Ecological Society