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Oregon Quarantines The following diseases are quarantined against shipment into and within Oregon. Oregon also has several control areas designed to protect specific counties or designated areas from diseases and pests of regulatory concern that may exist ...
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Diagnosis and Control of Phytophthora Diseases J.W. Pscheidt, Extension Plant Pathology Specialist, OSU The first step in managing any of the several diseases caused by Phytophthora spp. is to obtain an accurate diagnosis. Although Phytophthora is a ...
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APHIS List of Regulated Hosts and Plants Proven or Associated with Phytophthora ramorum Proven Hosts Regulated for Phytophthora ramorum Regulated plants are those adapted from other regulated lists or were added upon completion, documentation and review ...
Susceptibility of Conifer Seedlings to Phytophthora Root Rot Susceptibility of Conifer Seedlings to Phytophthora Root Rot* Highly Tolerant Western Redcedar Lodgepole Pine Ponderosa Pine Western Larch Tolerant Incense Cedar Sitka Spruce Engelmann Spruce ...
Plants Susceptible to Phytophthora Diseases Plants in the PNW Susceptible to Phytophthora Diseases Genus Common Name Abies * true fir Alnus alder Araucaria Monkeypuzzle Arbutus Madrone Arctostaphylos kinnikinnick Brassica cabbage Buxus* boxwood Calluna* ...
Powdery Mildew Diseases Dean A. Glawe, Plant Pathologist, Emeritus, WSU Gary G. Grove, Plant Pathologist and Extension Plant Pathologist, WSU Powdery mildews rank among the most important diseases of food and ornamental plants. Damage can result from ...
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Damping-off in Tree Nurseries Michelle M. Cram, Plant Pathologist, USDA Forest Service, Forest Health Protection, Athens, Georgia Damping-off is a disease of germinating, and newly emerged, conifer and hardwood seedlings that results in decay of succulent ...
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Damping-off in Vegetable Seedlings Damping-off frequently attacks young seedlings of almost all kinds of vegetables. Just after seedlings have emerged from the soil, they are easily killed by fungus organisms likely to be present in any garden soil. ...
Mycotoxins Beneficial and harmful products that fungi produce draw researchers’ attention worldwide. Antibiotics inhibit microbial activity when administered at sublethal doses, providing important tools to manage infections, primarily bacterial, in ...
Plants Resistant or Susceptible to Armillaria Root Rot Plants Resistant or Susceptible to Armillaria Root Rot Trees Resistant Susceptible incense cedar pines (MI) larch arborvitae (HI) Scots pine (MI) cedar (HI) Smoketree (LI Douglas-fir Ginkgo (LI) ...