Counts in April through July showed that sprays in late January at Hanford, California, against the sycamore scale, Stomacoccusplatani Ferris on sycamore leaves, ranked as follows: oil +diazinon, diazinon, oil +dimetho- ate, dormant oil, oil + malathion, oil + carbaryl, dimetho- ate, ovex, carbaryl, check (no treatment). Samplings in April were more sensitive, statistically, to diffrences in scale control, but samplings in late July were of greater practical significance. Visual evaluation of leaf appearance gave essentially the same insecticide ranking as scale counts and was much more rapid.
Document Type: Research Article
Publication date: June 1, 1966
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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.