Canadian Forest Service Publications

Temperature treatment of Douglas-fir seeds to control the seed chalcid Megastigmus spermotrophus Wachtl. 1974. Ruth, D.S.; Hedlin, A.F. Canadian Journal of Forest Research 4(4): 441-445.

Year: 1974

Issued by: Pacific Forestry Centre

Catalog ID: 29110

Language: English

Availability: PDF (request by e-mail)

Available from the Journal's Web site.
DOI: 10.1139/x74-065

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Larvae of the chalcid Megastigmusspermotrophus in Douglas-fir seeds were killed when treated at 45 °C for 27 h (2-year-old seed) and for 33 h (1-year-old seed). Heat treatment of uninfested seed did not affect rate of germination of seedling growth.