Abstract
Cones from two stands of lodgepole pine (Pinuscontorta Dougl. var. latifolia Engelm.) from southwestern Alberta were bulked for approximately 10 trees per location. The effects of cone moisture content and relative humidities (RH) on seed release within the extraction kiln were noted.Cone moisture content was the most important factor for seed extraction and the greater the moisture loss the more seed was released. Kiln RH of 10, 15, and 20% were equally effective, as was dropping the RH from 20 to 10% during extraction. A final RH of < 10% probably is required for full seed release.
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