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    Author(s): Edward J. Dimock; Ernest B. Collard
    Date: 1981
    Source: Res. Pap. PNW-RP-280. Portland, OR: U.S. Department of Agriculture, Forest Service Pacific Northwest Forest and Range Experiment Station. 20 p
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (1.34 MB)

    Description

    A mixture of dalapon and atrazine consistently controlled grasses of forbs better than either herbicide used alone. Sprayed over and around newly planted ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco), the mixture doubled tree survival in one study, greatly enhanced height growth in another, but produced no significant gains in four studies. Protecting seedlings from herbicide spray proved beneficial in two studies, but seemed unnecessary in four others.

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    Citation

    Dimock, Edward J., II; Collard, Ernest B. 1981. Postplanting sprays of dalapon and atrazine to aid conifer establishment. Res. Pap. PNW-RP-280. Portland, OR: U.S. Department of Agriculture, Forest Service Pacific Northwest Forest and Range Experiment Station. 20 p

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    Keywords

    Herbicides (-regeneration, grass control, forbs, dalapon, atrazine

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https://www.fs.usda.gov/treesearch/pubs/21256