Canadian Forest Service Publications

Pesticide phytotoxicity studies with seeds, germinants and seedlings of British Columbia conifers. 1977. Sutherland, J.R.; Woods, T.A.D.; Ilnytzky, S. Government of Canada. Department of the Environment. Canadian Forest Service, Pacific Forest Research Centre, Victoria, BC. Information Report BC-X-165. 7 p.

Year: 1977

Issued by: Pacific Forestry Centre

Catalog ID: 1757

Language: English

Series: Information Report (PFC - Victoria)

CFS Availability: Order paper copy (free), PDF (download)

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Greenhouse and field experiments were made to determine possible phytotoxic effects of the petroleum weed killers AWK No. 1, AWK No. 1 Special, the insecticides diazinon, Dylox, malathion and Sevin, and the fungicides Benlate, Dexon and Neutro Cop "53" to developmental stages (ranging from seeds to young seedlings) of Douglas-fir (coastal and interior forms), Sitka spruce, white spruce, western hemlock and lodgepole pine. AWK No. 1 and AWK No. 1 Special were often toxic to seedlings in the greenhouse, but not in the field. Dexon was frequently phytotoxic to several developmental stages of most seedling species, both in the greenhouse and the field. Phytotoxicity, when present, usually decreased as seedling age increased. Results are summarized in a table.