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  1. The Impact of Insects on Second-Year Cone Crops in Red Pine Seed-Production Areas

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    Author(s): William J. Mattson
    Date: 1968
    Source: Research Note NC-53. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
    Publication Series: Research Note (RN)
    Station: North Central Research Station
    PDF: View PDF  (347.28 KB)

    Description

    Second-year cone crops in red pine seed-production areas have been severely damaged by five species of insects. Control of the two most destructive pests could increase present seed yields in most areas by at least 50 percent. Some seed-production areas may not produce harvestable seed crops until cone-insect populations are suppressed.

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    Citation

    Mattson, William J. 1968. The Impact of Insects on Second-Year Cone Crops in Red Pine Seed-Production Areas. Research Note NC-53. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

    Keywords

    Insects, red pine

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