Field Evaluation of Demeton in the Control of Beet Yellows Virus1
Authors: SYLVESTER, E. S.; BURTON, VERNON E.; DUNCAN, R. B.
Source: Journal of Economic Entomology, Volume 52, Number 5, October 1959 , pp. 910-917(8)
Publisher: Entomological Society of America
Abstract:Differences ill yield and/or per cent sugar were found to be associated with the reduction in numbers of green peach aphids (Myzus persicae (Sulz.)) and delayed incidence of infection of the beet yellows virus in demeton spray-treated plots in three locations in Kern County, California. Populations of aphids were initiated by alatae early in February and were terminated by natural factors during mid-May. Symptoms of virus yellows infection were first found in early April, and spread continued until approximately 100% of the plants were infected. The best available evidence indicated that treatment could delay 100% infection for a period of approximately 3 weeks. With the exception of one field in which generally poor growing conditions prevailed, increased tonnage of beets \Vas found in the sprayed plots. Increase in sugar percentage was associated with treatment in all locations.
Document Type: Research Article
Publication date: 1959-10-01
- 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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