Efficacy of Herbicide Application Methods Used to Control Tanoak (Lithocarpus densiflorus) in an Uneven-Aged Coast Redwood Management Context
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Abstract
Three methods of tanoak (Lithocarpus densiflorus [Hook. & Arn.] Rehd.) control involving the application of the amine or ester form of triclopyr were evaluated in this coast redwood uneven-aged forest management study of herbicides. A cut-stump application with the amine form of triclopyr (Garlon 3A), frill cut with the amine form of triclopyr, basal-bark (outer surface) with the ester form of triclopyr (Garlon 4), and an untreated control were replicated three times. The tanoak control results in Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and/ or coast redwood (Sequoia sempervirens [D. Don] Endl.) predominated stands obtained in earlier studies in northern California and Oregon appear to be similar to the results of this study obtained in Santa Cruz County coast redwood stands. The need for tanoak control in an uneven-aged forest management context is discussed.
Suggested Citation
Douglas D. Piirto, Brenda Smith, Eric K. Huff, and Scott T. Robinson. "Efficacy of Herbicide Application Methods Used to Control Tanoak (Lithocarpus densiflorus) in an Uneven-Aged Coast Redwood Management Context" Proceedings of a Symposium on Oak Woodlands: Ecology, Management and Urban Interface Issues.. Mar. 1996.
Available at: http://works.bepress.com/dpiirto/5