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FIELD EXPERIMENTS ON THE TOXICITY OF ACEPHATE FOR CONTROL OF GRASSHOPPERS (ORTHOPTERA: ACRIDIDAE) ON RANGELAND1

Published online by Cambridge University Press:  31 May 2012

R. Nelson Foster ,
K. C. Reuter ,
J. M. Gourd ,
P. J. Enis  and
A. W. Wooldridge
R. Nelson Foster
Affiliation:
Pink Bollworm and Rangeland Pests Station, Methods Development, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Phoenix, Arizona 85040
K. C. Reuter
Affiliation:
Pink Bollworm and Rangeland Pests Station, Methods Development, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Phoenix, Arizona 85040
J. M. Gourd
Affiliation:
Pink Bollworm and Rangeland Pests Station, Methods Development, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Phoenix, Arizona 85040
P. J. Enis
Affiliation:
Pink Bollworm and Rangeland Pests Station, Methods Development, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Phoenix, Arizona 85040
A. W. Wooldridge
Affiliation:
Research and Development, Ortho Division, Chevron Chemical Company, Ocoee, Florida 32761
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Abstract

Field tests were used to evaluate the efficacy of liquid acephate in aerial applications to control grasshoppers on rangeland. An antidrift additive applied with the treatment was also evaluated. A rate of 105 g AI/ha of acephate at volumes of 2337, 1899, and 1461 mL of mix/ha with the addition of Nalco-trol® resulted in control statistically as good as the standard malathion treatment of 653 g AI/ha. Two formulations of acephate applied at the rate of 105 g AI/ha in a volume of 2337 mL/ha were compared and resulted in statistically comparable mortalities; both formulations of acephate resulted in excellent control 10 days after treatment.

Résumé

Des tests en champ ont permis d'évaluer l'efficacité de l'acéphate liquide appliqué par air contre les acridiens en prairie. Un additif anti-dérive utilisé avec le traitement a aussi été évalué. La dose de 105 g IA/ha d'acéphate dans un volume de 2337, 1899 ou de 1461 mL de mélange/ha avec l'addition de Nalco-trol® a permis un niveau de contrôle statistiquement aussi bon que le traitement normal au malathion à 653 g/ha. Deux formules d'acéphate appliqué à la dose de 105 g IA/ha dans un volume de 2337 mL/ha ont été comparées et ont causé des incidences de mortalité statistiquement comparables; les deux formules d'acéphate ont permis un contrôle excellent 10 jours après le traitement.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 9 , September 1983 , pp. 1163 - 1168
Copyright
Copyright © Entomological Society of Canada 1983

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References

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