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COMPARATIVE TOXICITIES OF FONOFOS AND PHORATE TO DIFFERENT POPULATIONS OF MELANOTUS COMMUNIS (GYLLENHAL) (COLEOPTERA: ELATERIDAE) IN SOUTHERN FLORIDA

Published online by Cambridge University Press:  31 May 2012

Richard K. Jansson ,
Scott H. Lecrone  and
Ronald H. Cherry
Richard K. Jansson
Affiliation:
University of Florida, Institute of Food and Agricultural Sciences, Tropical Research and Education Center, 18905 S.W. 280 St., Homestead, Florida, USA33031
Scott H. Lecrone
Affiliation:
University of Florida, Institute of Food and Agricultural Sciences, Tropical Research and Education Center, 18905 S.W. 280 St., Homestead, Florida, USA33031
Ronald H. Cherry
Affiliation:
University of Florida, Institute of Food and Agricultural Sciences, Everglades Research and Education Center, P.O. Drawer A, Belle Glade, Florida, USA33430
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Abstract

The toxicities of two commonly used soil insecticides, fonofos and phorate, were compared among one larval population of the corn wireworm, Melanotus communis (Gyllenhal), from sugarcane fields and three populations from potato fields in southern Florida. Fonofos toxicity did not differ among most populations; however, phorate toxicity did. Phorate was consistently less toxic to one population from potato fields. The toxicities of these two compounds to the population from sugarcane fields did not differ from those from potato fields, despite differences in insecticide pressure between the two crops.

Résumé

La toxicité de deux insecticides pour application au sol, le fonofos et le phorate, a été comparée entre une population du taupin Melanotus communis (Gyllenhal) en plantations de canne à sucre, et trois autres provenant de champs de pomme de terre de la Floride. La toxicité du fonofos ne variait pas entre la plupart des populations, mais celle du phorate était variable. Le phorate s’est avéré moins toxique pour l’une des populations des champs de pomme de terre. Les toxicités des deux composés pour la population en plantation de canne ne différaient pas de celles obtenues en champs de pomme de terre, en dépit de pressions exercées par l’usage d’insecticides très différentes entre les deux cultures.

Type
Articles
Information
The Canadian Entomologist , Volume 120 , Issue 5 , May 1988 , pp. 397 - 400
Copyright
Copyright © Entomological Society of Canada 1988

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