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Hybrid Poplar in the Willamette Valley

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Hybrid poplar (Populus spp.) is the newest tree crop in the Pacific Northwest. We have been studying its management and growth in the Willamette Valley of western Oregon on poorly drained soils with no irrigation. We found very good growth rates—up to 4000 ft3/ac in 6 yr—on soils considered poor for many kinds of agriculture. For plantation establishment, we found that after 1 yr, simple no-till methods were as effective as the often-used ripping and tilling approaches. An herbicide screening study resulted in good poplar growth with some herbicides and reduced growth with two others commonly used in site preparation. Our investigation of root development indicates that the good growth on these poorly drained, nonirrigated soils is associated with poplar's deep and extensive root development. West. J. Appl. For. 18(4):281–285.

Keywords: Hybrid poplar; Willamette Valley; environmental management; forest; forest management; forest resources; forestry; forestry research; forestry science; growth and yield; herbicides; natural resource management; natural resources; roots; site preparation; soils

Document Type: Miscellaneous

Affiliations: 1: Department of Forest Science, Oregon State University, Corvallis, OR, 97331, 2: Environmental Consultant Bozeman, MT, 59715, 3: Department of Forest Resources, Oregon State University, Corvallis, OR, 97331,

Publication date: October 1, 2003

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.
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