Photoperiod Extension WIth Two Types of Light Sources: Effects of Growth and Development of Conifer Species
Growth and development of seven conifer species were evaluated using two light sources and five light environments. One source was incandescent light, which was the standard system used at the nursery. The other source was a highpressure sodium lamp mounted inside an oscillating parabolic mirror, a system that has not been tested on an operational basis. Morphological response to the different light treatments was species dependent; however, generally all treatments produced seedlings that met our regional morphological standards for planting. With only a few exceptions, crop uniformity was not significantly altered by the new oscillating light system, relative to the standard treatment. Tree Planters' Notes 44(3): 105-112; 1993.
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Author(s): Steven K. Omi, Kent L. Eggleston
Publication: Tree Planters' Notes - Volumes 44, Number 3 (1993)
Section: Peer-Reviewed and Refereed Articles
Volume: 44
Number: 3
