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FIELD EVALUATION OF CARBOFURAN BAIT AGAINST GRASSHOPPER (ORTHOPTERA: ACRIDIDAE) POPULATIONS IN SASKATCHEWAN1,2

  • Al B. Ewen (a1) and M.K. Mukerji (a1)

Abstract

The dosage of carbofuran as a bait required to reduce third-instar grasshopper populations to non-economic levels (5–10 grasshoppers per square metre in short mixed grass hay pasture) was considerably lower than the recommended rate for spray application. The results from 2 years’ field trials showed that 35.0 g active ingredient per hectare as a bait would reduce grasshopper populations by about 70%, 3 days after application.

La dose de carbofuran utilisée comme appât pour réduire les populations de criquets de troisième stade larvaire à des niveaux sans importance économique (5–10 criquets par mètre carré) dans des prairies de fauche ou de pâture composées d’herbes courtes ou d’herbes mixtes était bien inférieure à la dose recommandée à des fins de pulvérisation. Les résultats après 2 ans d’expérience sur le terrain ont montré que l’utilisation comme appât de 35,0 g d’ingrédient actif par hectare réduirait les populations d’environ 70%, 3 jours après l’application.

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References

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Abbott, W.S. 1925. A method for computing the effectiveness of an insecticide. J. econ. Ent. 18: 265267.
Mukerji, M.K., and Ewen, Al B.. 1984. Field evaluation of cypermethrin and carbaryl as sprays and baits for grasshopper (Orthoptera: Acrididae) control in Saskatchewan. Can. Ent. 116: 59.
Mukerji, M.K., Ewen, Al B., Craig, C.H., and Ford, R.J.. 1981. Evaluation of insecticide-treated bran baits for grasshopper control in Sasktachewan (Orthoptera: Acrididae). Can. Ent. 113: 705710.
SAS Institute Inc. 1982. SAS User's Guide: Statistics. Cary, NC, USA.

FIELD EVALUATION OF CARBOFURAN BAIT AGAINST GRASSHOPPER (ORTHOPTERA: ACRIDIDAE) POPULATIONS IN SASKATCHEWAN1,2

  • Al B. Ewen (a1) and M.K. Mukerji (a1)

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