David Meigs Beyer, Ph.D.

Professor of Mushrooms


    Mushroom cultivation
    Mushroom nutrition and physiology
    IPM and Disease Management for Mushroom cultivation
    Mushroom extension services for the North American mushroom industry



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    About Me

    In 1979, I began my career as a mushroom grower for Leaver Mushrooms, Ontario, Canada. In the early 1990’s I left Leaver as the Director of Growing to pursue a PhD in mushroom research at Penn State University.

    As a Professor of Mushrooms my research and extension programs cover all aspects of mushroom growing, from composting through production, including disease management.

    Recently we secured a 5 year, $1.4 million grant from the USDA to study mushroom flies and diseases; a project that is a collaboration of researchers at Penn State in Plant Pathology and Environmental Microbiology, Entomology and Food Science.

    Other ongoing research projects include the reuse of compost and casing to produce a second crop of mushrooms; alternative materials for mushroom substrate and the study of cultural factors influencing a new mushroom pathogen, identified as Syzygites megalocarpus.

    My extension program includes grower educational workshops and the annual Mushroom Short Course. I have been fortunate enough to work with mushroom growers around the world who continue to amaze me with their intuition and resourcefulness.


    B.S., Arts and Science, Syracuse University M.S., Plant Pathology, Penn State University Ph.D., Plant Pathology, Penn State University