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The Economics of Pyrethrum

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Japan now produces 6/7 of the world's pyrethrum flowers. The imports into the United States have increased from 3,000,000 lbs. in 1923 to 9,000,000 lbs. in 1929. Average consular invoice values decreased from 47c a lb. in 1923 to 18c a lb. in 1929. A 1% lubricating oil spray costs about 0.3c per gallon; a lead arsenate spray, 1.2c.; a lime sulphur spray, 1.75c.; a nicotine spray containing 0.04 per cent of alkaloid, l.84c; and a pyrethrum spray, containing 0.04 per cent of oleoresin of pyrethrum and activated with soap, costs 2.2c per gallon.

Document Type: Research Article

Publication date: October 1, 1930

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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.
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