In testing over 200 spray outfits the agitation in the spray tank was found to be decidedly inefficient. The propeller type agitators at speeds less than 200 rpm do not give a uniform mixture. A new type square end agitator gives excellent results at speeds from 88 to 110 rpm and a low hp consumption. It is recommended that this type of agitator replace the propeller type.
Document Type: Research Article
Publication date: December 1, 1933
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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.