The Influence of Weeding on Growth of Browsed Seedlings in Douglas-Fir Plantations

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Large Douglas-fir (Pseudotsuga menziesii) transplants were exposed to heavy browsing pressure under various weeding regimes in two experiments continued 4 and 5 yr, respectively. Browsing had relatively little effect on seedlings that did not receive weed control because potential growth was modest. With increasing degrees of weed control, seedlings that escaped browsing grew more rapidly. Weeding facilitated escapement from reach of browsing and increased net growth significantly because of both escapement and increased rates of recovery after herbivory. When subjected to repeated browsing, seedlings were similar in size in plots weeded both the first year and for 2 yr. Seedlings in plots weeded at both levels were larger than those in unweeded plots. Intensive weeding after planting appears to be a useful and integrative method of protecting seedlings from browsing losses. West. J. Appl. For. 15(3):163-168.

Document Type: Journal Article

Affiliations: Starker Forests, Inc., Corvallis, OR 97339

Publication date: July 1, 2000

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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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