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Journal Article

Control of Annual Grasses and Revegetation in Ponderosa Pine Woodlands

M. Dale Christensen, James A. Young and Raymond A. Evans
Journal of Range Management
Vol. 27, No. 2 (Mar., 1974), pp. 143-145
DOI: 10.2307/3896752
Stable URL: http://www.jstor.org/stable/3896752
Page Count: 3

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Topics: Seedlings, Herbicides, Grasses, Perennials, Rodents, Vegetation, Woodlands, Caching, Fallowing, Conifers
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Control of Annual Grasses and Revegetation in Ponderosa Pine Woodlands
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Abstract

Application of 1.12 kg/ha of the herbicide atrazine sufficiently controlled medusahead or downy brome to permit establishment of perennial wheatgrass in ponderosa pine woodlands previously burned in wildfires. Fall application of atrazine greatly improved survival of ponderosa pine or bitterbrush seedlings transplanted to plots the following spring. Bitterbrush seedlings established naturally in areas treated with atrazine. Apparently the herbicide treatment created a desirable habitat for seed caching by rodents, along with reduction of competition from annual grasses. Higher rates of atrazine controlled most herbaceous vegetation and resulted in greater growth of ponderosa pine seedlings. Failure to establish perennial grasses resulted in reinvasion by annual grasses.

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