To evaluate northern latitude conifer cultural regimes, white spruce (Picea glauca [Moench] Voss) was: a) germinated under three germination and regimes (20/20°C under- and over-bench heating systems and 20/11°C under-bench heating system, all 12/12 h days/night) and then grown under a common cultural regime; or b) germinated ander a 20/20°C air temperature and fertilized with either a 20-8-20 grower formulation over the entire growing season, or a 20-20-20 Hi-Sol fertilizer until mid-July followed by a 10-52-17 finisher formulation. There were no significant differences in measured morphological characteristics or calculated seedling recovery between the heating systems at growing season end. Although the 20/20°C germination temperature nearly doubled germination heating costs over the split temperature 20/11°C treatment, seedling morphology and recovery were not improved. Under-bench heating costs in the full were 30% less than those for over-bench heating to the same temperature setpoints. Seedlings produced under the 20-8-20 fertilizer regime were significantly shorter, sturdier, and greater in root mass than seedlings produced under the 20-20-20 plus 10-52-27 treatment. As a result of these experiments, modified germination temperature and fertilizer regimes will be incorporated into nursery culture at Red Rock Research Station.
Draper, D.A., Hawkins, C. D.B.. 1989. Germination and Fertilization Regime Effects on the Growth of Container White Spruce Seedlings at Red Rock Research Station. British Columbia Ministry of Forests, Lands, Natural Resource Operations and Rural Development. FRDA Research Report. FRR64
Topic: FLNRORD Research Program
Keywords: Seedling, Performance
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