Growth of Hybrid Poplars, White Spruce, and Jack Pine Under Various Artificial Lights

摘要

The objective of the study was to evaluate energy consumption and effects of fluorescent, incandescent, and high pressure sodium lamps on growth and dry matter production of two hybrid poplars, white spruce, and jack pine. The tests were conducted in 1978 and 1979 in a greenhouse covered with a double-layer of polyethylene.