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A discussion of the tests by which the character of petroleum oil may be designated, with special reference to volatility and suffocation in evaluating oils to be used for sprays. The effect of petroleum oils of various specifications on insects and plants. The relative value of different types of oil emulsions as insecticides. Special attention is given to a discussion of the so-called "quick breaking" type of emulsion which was devised for use with very highly refined lubricating oils which are too expensive for general use unless their efficiency as insecticides is increased beyond that found in stable emulsions made from this type of oil. This system of emulsification is recommended only for oils that are practically harmless to the plant if applied pure. The use of very small amounts of emulsifiers permits the oil to separate quickly from the emulsion stage, thus making the oil more effective and decreases the amount of oil in the runoff.
Document Type: Research Article
Publication date: October 1, 1926
More about this publication?
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.