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Abstract
Blue spruce (Picea pungens Engelm.) has been planted quite extensively in North Dakota shelterbelts and farmstead windbreaks. Generally survival and growth have been promising, but there is considerable variation in performance of individual trees or plantations. Poorly adapted seed sources have been suspected as one cause for poor performance. There should be interest, therefore, in the results of a study designed to test the growth, survival, and resistance to climatic agents of seven known seed sources of blue spruce after 5 years in the field.
Citation
Dawson, David H.; Rudolf, Paul O. 1966. Performance of Seven Seed Sources of Blue Spruce in Central North Dakota. Research Note NC-5, St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station