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Bacterial Canker of Tomato and its Distribution With the Seed from Infected Fruit

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Bacterial Canker of Tomato (The Grand Rapids disease) is partially controlled by seed treatment with dichloride of mercury at the rate of 1: 3000 parts of water for five minutes. Infected and contaminated seed, if untreated, may be responsible for percentages of canker varying from one to one hundred percent in the field grown plants. Seedling infection occurs usually in the plant bed. The severity of the primary infection of the plant is considered important in relation to subsequent infection of fruit and seed. Seed infection is not always coincident with the systemic infection of the plant. Preliminary work has shown bacterial infection in two percent or less of the seed from infected fruits. Contaminated seed was present in much higher percentages. Further knowledge of the external and internal symptoms of this disease is essential to the practical control of the sources from which diseased seed may originate.

Document Type: Research Article

Publication date: April 1, 1931

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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