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Large plats of peach trees of from 12 by 31 to 22 by 22 rows were used for experiments to determine the comparative effectiveness of dusts carrying 5 and 10 per cent lead arsenate and the standard lead-arsenate spray and to test the value of adding fish oil to the sprays and the value of an application of lead-arsenate spray when the buds are pink. Calcium mono sulphide was used with lead arsenate and no lime to note the effect on the foliage. Heavy applications of dust (1/3 to ½pound per tree) carrying 5 per cent lead arsenate controlled a moderate curculio infestation as well as sprays, and the dust carrying 5 per cent lead arsenate was as effective against the insect as one carrying 10 per cent lead arsenate. The standard schedule of sprays gave as good curculio control as that with fish oil added to the sprays or that with an extra application when the buds are pink. Lead arsenate when used with calcium mono sulphide and no lime gave more foliage injury than when used with self-boiled lime-sulphur containing the usual quantity of lime.
Document Type: Research Article
Publication date: August 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.