Nine-Year Outplanting Test of Cottonwood and Hybrid Poplar Clones in Northwestern Ontario
Twenty-two poplar clones (Populus deltoides Bartr. ex Marsh., P. balsamifera L., and their hybrids), selected for frost resistance and growth in nursery trials, were outplanted and compared for nine growing seasons in a randomized complete block experiment in northwestern Ontario (49° 20' N, 82° 05' W). Fifteen of the clones were moderately to severely infected with stem cankers by their ninth growing season. Five relatively disease free clones, ramets of which were 6 to 7 meters in height at year 9, were selected for further testing and pilot-scale use in northwestern Ontario. Tree Planters' Notes 42(2):49-51; 1991.
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Author(s): Robert E. Farmer, Jr., C. Lynn Palmer, Harvey W. Anderson, Louis Zsuffa, Gwennoth J. O'Reilly
Publication: Tree Planters' Notes - Volumes 42, Number 2 (1991)
Section: General
Volume: 42
Number: 2
