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Subjects: Pear Diseases and pests Northwestern States; pome fruits; fungal diseases of plants; climatic factors; scab diseases; plant damage; disease and pest management; control methods; spraying; economic analysis; insect pests; mites; fungicides; copper sulfate; calcium carbonate; sulfur; insecticides; arsenicals; spraying equipment; dusting; Chrysomelidae; Eriophyidae; antifungal agents</div>
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<dl><dd>Fisher, D. F.</dd>
<dd>Newcomer, E. J.</dd></dl></div>
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