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    Author(s): Tom Jopson
    Date: 2007
    Source: In: Riley, L.E.; Dumroese, R.K.; Landis, T.D. National Proceedings: Forest and Conservation Nursery Associations - 2006. Proceedings RMRS-P-50. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 36-37
    Publication Series: Proceedings (P)
    Station: Rocky Mountain Research Station
    PDF: View PDF  (200 B)

    Description

    The use of blackout cloth to create long night photoperiods for the induction of dormancy in certain conifer species has been an established practice for a long time. Its use was suggested by Tinus and McDonald (1979) as an effective technique, and the practice has been commonly used in Canadian forest nurseries for a number of years. Cal-Forest Nursery installed its first blackout system in 1998 after a visit to several Canadian nurseries. Over the next several years, the basic protocols were established. Successful use of blackout requires appropriate equipment and knowledge of appropriate species, initiation timing, and duration.

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    Citation

    Jopson, Tom. 2007. Blackout cloth for dormancy induction. In: Riley, L.E.; Dumroese, R.K.; Landis, T.D. National Proceedings: Forest and Conservation Nursery Associations - 2006. Proceedings RMRS-P-50. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 36-37

    Keywords

    container seedlings, photoperiod, Douglas-fir, frost hardiness

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