science · 01 May 1950 · 75 years ago
death
Died 1 May 1950 at age 92 (born 11 Jun 1857).
American entomologist noted for pioneering efforts in applied entomology and his experiments in the biological control of harmful insects. He is regarded as the founder of agricultural and medical entomology. He proposed that natural enemies rather than pesticides be used for controlling pests. Howard was head of the U.S. Dept. of Agriculture for over 30 years. He described 20 new species of mosquitoes, and 47 new groups of parasitic wasps. Howard revealed that houseflies carry and transmit many diseases. He was the first to suggest covering standing water with oil to control egg-laying by mosquitoes and kill larvae to reduce disease transmission. His work led to belief that great natural balances are mainly due to the action of the parasites.
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