Canadian Forest Service Publications
Pigments for use on conifer seeds sown in forest nurseries. 1976. Sutherland, J.R.; Edwards, D.G.W. Government of Canada. Department of the Environment. Canadian Forest Service, Pacific Forest Research Centre, Victoria, BC. Information Report BC-X-146.
Issued by: Pacific Forestry Centre
Catalog ID: 3983
Growth room and nursery experiments were conducted to determine the possible phytotoxic effects of three seed-applied pigments [Reeves' Brilliant Yellow (Ost) No. 59 Redimix and Brilliant Blue No. 51 Redimix, and DuPont's Watchung Red B RM-417-D] on germination and seedling growth of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco], Sitka spruce [Picea sitchensis (Bong.) Carr.], white spruce [P. glauca (Moench) Voss], lodgepole pine (Pinus contorta Dougl.) and western hemlock [Tsuga heterophylla (Raf.) Sarg.]. In the growth room, none of the three treatments harmed germination of: (i) good or poor quality (based on both germination capacity and germination speed), stratified and unstratified seeds, or (ii) seeds stored for 2 and 4 weeks after treatment. The treatments were not detrimental to seed germination or seedling growth at Koksilah and Surrey forest nurseries.