A survey of commercial nursery and Christmas tree growers was implemented online and by mail in 2018 to understand disease issues and information preferences. Overall, the majority of the respondents reported that they prefer online sources of information and many are using Extension bulletins and sources. Cultural, chemical, and weed control methods were considered extremely effective by participants and very few used biological control methods to control disease. Participants identified spruce decline, boxwood blight, and hemlock woolly adelgid as emerging disease threats, so future information to growers should focus on identification and management of these threats.
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Huff, E. S., & Sakalidis, M. L. (2022). Michigan Conifer Growers’ Perspectives on Disease Management. The Journal of Extension, 60(2), Article 11. https://doi.org/10.34068/joe.60.02.11
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