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FIELD EVALUATION OF CYPERMETHRIN AND CARBARYL AS SPRAYS AND BAITS FOR GRASSHOPPER (ORTHOPTERA: ACRIDIDAE) CONTROL IN SASKATCHEWAN1

Published online by Cambridge University Press:  31 May 2012

M. K. Mukerji  and
Al B. Ewen
M. K. Mukerji
Affiliation:
Research Station, Agriculture Canada, Saskatoon, Saskatchewan S7N 0X2
Al B. Ewen
Affiliation:
Research Station, Agriculture Canada, Saskatoon, Saskatchewan S7N 0X2
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Abstract

Cypermethrin and carbaryl, as both aqueous sprays and bran baits, were tested in the field as crop protection measures against third-instar grasshopper populations infesting bromegrass and alfalfa–bromegrass pastures. Application of 15 g cypermethrin/ha as a spray reduced the grasshopper populations by 97% within 120 h; 700 g carbaryl/ha as spray reduced the populations by 90% during the same period of time after application. Neither insecticide applied on bran bait sufficiently reduced populations to be useful as crop protection measures against grasshoppers.

Résumé

On a testé en plein champ de la cyperméthrine et du carbaryl sous forme de pulvérisations aqueuses et d'appâts au son comme moyens de protéger des pâturages de brome et de luzerne-brome contre des infestations de sauterelles au troisième stade de développement. L'application de 15 g/ha de cyperméthrine sous forme de bouillie réduit de 97% les populations de sauterelles en moins de 120 heures, alors que la dose de 700 g/ha de carbaryl en bouillie les réduit de 90% au cours du même intervalle de temps. Aucun des insecticides appliqués sous forme d'appât au son n'a donné des résultats suffisants pour s'avérer utile comme moyen de protection contre les sauterelles.

Type
Articles
Information
The Canadian Entomologist , Volume 116 , Issue 1 , January 1984 , pp. 5 - 9
Copyright
Copyright © Entomological Society of Canada 1984

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References

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