Recent contributions of insect physiology to insect toxicology and control
Author
W. M. HoskinsAuthor Affiliations
W. M. Hoskins was Associate Professor of Entomology and Associate Entomologist in the Experiment Station.Publication Information
Hilgardia 13(6):307-386. DOI:10.3733/hilg.v13n06p307. August 1940.
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Abstract
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Introduction
The increasing difficulty encountered in recent years in controlling insect pests has led to a searching inquiry into the conditions under which insecticides act, and the chemical, physical, and biological factors which govern their effects. Among these factors none are more important than the physiological processes which occur in the species whose control is desired. Thus insect physiology has an economic importance which makes its active development much more imperative than if it were of purely scientific interest alone. Nevertheless, few attempts have been made to apply the increasing knowledge of physiology to the problems of insect-pest control, and the accounts of such work are widely scattered in the biological literature. These conditions have made it seem worth while to attempt to interpret certain advances in this field in terms of their relations to insect toxicology and control.
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Also in this issue:
State's irrigation districts: Segment of California's agricultural economy increasing in importance as changes in the water payment complex evolveProcessing limas for freezing: Unit costs drop rapidly as percentage of grade-out drops and as total volume and effective utilization of plant increase
Traffic-induced compaction: Inexpensive and relatively easy to use new soil penetrometer enables measurement of variations in degree of compaction
Reduction of wildfire hazard: Removal of dead fuel reduced damage by wildfire in treated portion of experimental second growth ponderosa pine range
Lygus bug control in alfalfa: Increasing tolerance to insecticides complicates control of lygus bugs in state's major alfalfa seed producing areas
Pests of field beans: Insect and mite damage to pink, red beans investigated in Sutter Basin area
Soil potassium for potatoes: Depletion of soil potassium by cropping necessitates potash fertilization in certain areas of Kern and Tulare counties
California red scale parasites: Colonization and recovery of three species introduced from the Orient in 1956–1957 indicate establishment in California
Control of tomato leaf miners: Comparative field tests indicate Dylox and Diazinon may be suitable as replacements for parathion in control programs
Quality of brussels sprouts: Low temperatures during handling operations retarded quality deterioration in study of temperature effects on respiration