Surveying: Leafhopper populations

Authors

F. L. Jensen
E. M. Stafford
H. Kido
D. Flaherty

Authors Affiliations

F. L. Jensen is Farm Advisor, Tulare County; E. M. Stafford is Professor and Entomologist, University of California, Davis; H. Kido is Laboratory Technician, Department of Entomology, U.C., Davis; D. Flaherty is Laboratory Technician, Division of Biological Control, U.C., Albany.

Publication Information

Hilgardia 19(4):7-7. DOI:10.3733/ca.v019n04p7. April 1965.

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Abstract

Rapid and accurate surveying for grape leafhopper population levels is essential to a decision for necessity of insecticide treatment within an integrated pest control program. These Tulare County studies indicate that counting the nymphs on only two leaves per acre gives as accurate an estimate of the population as did counting the nymphs on fifty leaves. It was also found that the leaves could be selected from vines along the avenues, rather than from vines scattered throughout the vineyard.