The Paul H. DeBach Papers document University of California, Riverside professor
Paul DeBach's pioneering work in the field of integrated pest management and in the biological control
of insect pests and weeds. The collection spans the years 1921-1989 (bulk 1955-1980) and includes
research notes, background data, manuscripts, reprints, project plans, progress reports, and
correspondence related to DeBach's work in biological control of insects.
Paul H. DeBach (1914-1993) was an internationally recognized proponent of biological insect control. His
research on citrus pests was fundamental in preserving the continued health of California citrus crops
without reliance on chemical pesticides. DeBach was born in 1914 in Miles City, Montana and moved to
southern California at an early age. In 1933, he graduated from Fairfax High School in Hollywood,
California and thereafter began his university studies at the University of California, Los Angeles.
After two years, he transferred to the University of California, Berkeley, where in 1938, he received
his B.A. in entomology. During his graduate studies, DeBach worked with Harry Smith at the University of
California, Riverside's Citrus Experiment Station. In 1940, DeBach was awarded a Ph.D. in biological
control of insect pests.
Copyright is protected by the copyright law, chapter 17, of the U.S. Code. All requests for permission to
publish or quote from manuscripts must be submitted in writing to the Head of Special Collections.
Permission for publication is given on behalf of the Department of Special Collections, University of
California, Library, Davis as the owner of the physical items and is not intended to include or imply
permission of the copyright holder, which must also be obtained by the researcher.