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Section 6. Pyrethroid resistance: field selection in sorghum

Published online by Cambridge University Press:  20 September 2013

Neil W. Forrester ,
Matthew Cahill ,
Lisa J. Bird  and
Jacquelyn K. Layland
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Summary

Pyrethroids applied to flowering sorghum, at either the low midge rate or the higher Helicoverpa rate (20 g and 100 g fenvalerate a.i./ha, respectively), caused selective mortality of Helicoverpa armigera larvae and resulted in differential selection for resistance. This finding vindicated the original strategy decision to apply the same temporal restrictions on pyrethroid use for sorghum midge, Contarinia sorghicola, as those for H. armigera.

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Bulletin of Entomological Research Supplement Series , Volume 1: Management of pyrethroid and endosulfan resistance in Helicoverpa armigera (Lepidoptera: Noctuidae) in Australia , September 1993 , pp. 43 - 45
Copyright
Copyright © Cambridge University Press 1993

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