Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-25T18:07:19.455Z Has data issue: false hasContentIssue false
  • English
  • Français

Douglas Fir Release from Tanoak and Pacific Madrone Competition

Published online by Cambridge University Press:  12 June 2017

S. R. Radosevich ,
P. C. Passof  and
O. A. Leonard
S. R. Radosevich
Affiliation:
Dep. of Bot., Univ. of California, Davis 95616
P. C. Passof
Affiliation:
Ukiah, CA
O. A. Leonard
Affiliation:
Dep. of Bot., Univ. of California, Davis, CA
Get access Rights & Permissions [Opens in a new window]

Abstract

Broadleaf species such as tanoak [Lithocarpus densiflorus (Hook. & Arn.) Rend.] and pacific madrone (Arbutus menziezii Pursh) reduced conifer growth on previously logged or burned areas of the northern California and southwest Oregon coast range. Cut-surface applications of 2,4-D [(2,4-dichlorophenoxy)acetic acid], 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid], and picloram (4-amino-3,5,6-trichloropicolinic acid) into tanoak and pacific madrone growing as overstory to Douglas fir [Pseudotsuga menziesii (Mirb.) Franco] were found to provide acceptable control for 10 years following application. Increment cores obtained from Douglas fir in treated and non-treated plots revealed substantial stem enlargement as a result of tanoak and pacific madrone control.

Type
Research Article
Information
Weed Science , Volume 24 , Issue 1 , January 1976 , pp. 144 - 145
Copyright
Copyright © 1976 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Gratkowski, H., Hopkins, D., and Lauterbach, P. 1973. The Pacific coast and northern Rocky Mountain region. J. Forest. 71:138–143.Google Scholar
2. Gratkowski, H.D. and Lauterbach, P. 1974. Releasing Douglas-fir from varnishleaf ceanothus. J. Forest. 72:150–152.Google Scholar
3. Johnson, W., McKell, C.M., Evans, R.A., and Berry, L.J. 1959. Yield and quality of annual range forage following 2,4-D application in blue oak trees. J. Range Manage. 12:18–20.CrossRefGoogle Scholar
4. Leonard, O.A. 1957. Effect of phenoxy herbicide concentrates applied to cuts of resprouting tree species. Weeds 5:291–303.CrossRefGoogle Scholar
5. Newton, M. 1963. Success in Douglas-fir plantations as related to site and method of removal of bigleaf maple overstory. West. Weed Contr. Conf. Res. Prog. Rep. pp. 17–18.Google Scholar
6. Newton, M. 1965. Injector treatments for pre-commercial thinning of Douglas-fir. West. Weed Contr. Conf. Res. Prog. Rep. p. 42.Google Scholar
7. Sterrett, J.P. 1969. Injection of hardwoods with dicamba, picloram and 2,4-D. J. Forest. 71:820–821.Google Scholar