A New Greenhouse Photoperiod Lighting System for Prevenction of Seedling Dormancy

Richard W. Tinus

Treesearch

A New Greenhouse Photoperiod Lighting System for Prevenction of Seedling Dormancy

Informally Refereed

Authors:

Richard W. Tinus

Year:

1995

Type:

Scientific Journal

Station:

Southern Research Station

Source:

Tree Planters' Notes 46(1):11-14; 1995.

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Abstract

An oscillating light fixture consisting of a 400-watt high-pressure sodium arc lamp and an oscillating parabolic mirror was designed and tested on blue spruce (Picea pungens Engelm.). It successfully prevented apical bud dormancy at distances up to 13m (43 ft) and light intensities as low as 0.5 µE/m²/sec (4 foot-candles) in a greenhouse.

Citation

Tinus, Richard W. 1995. A New Greenhouse Photoperiod Lighting System for Prevenction of Seedling Dormancy. Tree Planters'' Notes 46(1):11-14; 1995.