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    Author(s): Edward P. Merkel
    Date: 1969
    Source: Res. Note SE-109. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 4 p.
    Publication Series: Research Note (RN)
    Station: Southeastern Forest Experiment Station
    PDF: View PDF  (236 KB)

    Description

    Initial experiments with the implantation of the systemic insecticide Bidrin® into the trunks of slash pines in a seed production area resulted in various degrees of control of coneworms, Dioryctria spp., and the pine seed-worm, Laspeyresia anaronjada Miller, depending on dosage rates and time of application. When applied in early May, dosages as low as 3.4 grams of technical Bidrin® per inch of tree diameter resulted in a 72-percent reduction in cone-worm infestation and a 92-percent reduction in seedworm infestation on second-year cones.

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    Citation

    Merkel, Edward P. 1969. Control of Insects in Slash Pine Cones with Trunk Implantations of Bidrin® Systemic Insecticide - First-Year Results. Res. Note SE-109. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station. 4 p.

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