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Pathogen Articles ...
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Pathogens Common to Many Plants ...
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Oregon’s Most Unwanted: Invasive Species Invasive species are those plants, animals, and microbes not native to a region which, when introduced either accidentally or intentionally, out-compete native species for available resources, reproduce ...
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Nematodes R. Ingham, Nematologist, OSU H.J. Jensen, Nematologist emeritus, OSU The word nematode is derived from Greek words meaning “threadlike.” This, in turn, is partly responsible for our calling this group of invertebrate animals “thread-worms.” ...
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Oomycetes ...
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Fungi ...
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Bacteria and Other Prokaryotes ...
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Parasitic Plants of Oregon Jay W. Pscheidt, Extension Plant Pathology Specialist, OSU Richard Halse, Herbarium Curator, OSU Kathy Merrifield, Nematologist, OSU (Update to Mistletoe section by Dave Shaw, Extension Forest Health Specialist, OSU) There are ...
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Tree Decline M. Putnam, Director of the Oregon State University Plant Clinic Landscape tree samples often come into the OSU Plant Clinic with the complaint of a thinning canopy and premature leaf drop. Usually, samples do not have visible foliar or twig ...
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Nonpathogenic Phenomena ...
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