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April grafting optimal for Fraser fir
29. 12 2010 (06:00)
Christmas trees provide a significant source of revenue in southern Appalachia. The most popular species in the region is Fraser fir but they are under attack by a pathogen that causes root rot, kills seedlings, and threatens serious economic losses. To develop planting stock that is resistant to or tolerant of the pathogen, researchers are comparing success rates of the traditional April grafting time with eight summer/early fall grafting dates.
