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Fasciation Jay W. Pscheidt, Extension Plant Pathology Specialist, OSU Melodie Putnam, Director OSU Plant Clinic Fasciation has been defined as a distortion of a plant caused by an injury or infection that results in thin, flattened, and sometimes curved s ...
Grape (Vitis spp.) Relative Disease Susceptibility and Sensitivity to Sulfur Grape (Vitis spp.) Relative Disease Susceptibility and Sensitivity to Sulfur Cultivar Powdery Mildew Botrytis Bunch Rot Eutypa Dieback Crown Gall Sulfur Sensitivity * Cabernet Fr ...
Tomato (Solanum lycopersicum)-Tomato Varietal Resistance to Fusarium Wilt and/or Crown and Root Rot Tomato (Solanum lycopersicum) — Tomato Varietal Resistance to Fusarium Wilt and/or Crown and Root Rot. Fusarium wilt is caused by races of Fusarium oxyspor ...
Diseases Caused by Pseudomonas syringae L.W. Moore (deceased), Bacteriologist and Plant Pathologist, OSU J.W. Pscheidt, Extension Plant Pathology Specialist, OSU Adapted from L.W. Moore. 1988. Pseudomonas syringae: disease and ice nucleation activity. Orn ...
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Air Pollution (Ozone) Jay W. Pscheidt, Extension Plant Pathology Specialist, OSU There is great interest in air quality all over the Western United States when smoke from forest fires fills valleys during the summer. Most of the smoke problem is due to sm ...
Fungicide Theory of Use and Mode of Action J.W. Pscheidt, Extension Plant Pathology Specialist, OSU Fungicides can be classified by chemical group, general mode of action, specific mode of action, or by physical properties once in the plant. Many fungicid ...
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Fungicide Families or Groups A grower should use fungicides with different modes of action. Tank-mix or rotate materials found in different fungicide families or groups to prevent or delay the development of resistant fungi. Groups below are not arranged ...
Horticultural Spray Oils Dr. Doug Walsh, IPM Coordinator, Washington State University Dr. Frank Zalom, IPM Program Director, University of California Dr. Gary Grove, Plant Pathologist, Washington State University Adapted by Jay W. Pscheidt from a similar ...
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Fungicides for Disease Management in the Home Landscape J.W. Pscheidt, Extension Plant Pathology Specialist, OSU Many fungicides are registered for use on commercially produced plants, but only a few are readily available to home gardeners. Most fungicide ...
Plant Viruses ...