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    Author(s): Pamela S. Roberts; J. Zavitkovski
    Date: 1981
    Source: Research Paper NC-206. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station
    Publication Series: Research Paper (RP)
    Station: North Central Research Station
    PDF: View PDF  (1.59 MB)

    Description

    Describes the energy consumption and biological effects of fluorescent, incandescent, and high pressure sodium lighting on the growth of poplars, white spruce, and jack pine in a greenhouse. At similar light levels the biological effects of all three light sources were similar. The incandescent lamps consumed several times more energy than the other two light sources.

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    Citation

    Roberts, Pamela S.; Zavitkovski, J. 1981. Growth of hybrid poplars, white spruce, and jack pine under various artificial lights. Research Paper NC-206. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station

    Keywords

    photosynthetically active radiation (PAR), height growth, dry matter production, plastic greenhouse

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