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THE INSECTICIDE FENITROTHION IN HEADWATERS STREAMS FROM LARGE-SCALE FOREST SPRAYING

Published online by Cambridge University Press:  31 May 2012

D. C. Eidt  and
K. M. S. Sundaram
D. C. Eidt
Affiliation:
Maritimes Forest Research Centre, Canadian Forestry Service, Fredericton, New Brunswick
K. M. S. Sundaram
Affiliation:
Maritimes Forest Research Centre, Canadian Forestry Service, Fredericton, New Brunswick
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Abstract

Concentrations of the insecticide fenitrothion in water varied greatly among streams, depending upon spray history and weather. Sprays at 3 oz/ac (210 g/ha) resulted in measurable concentrations in streams as far as 2.5 mi (4 km) from the sprayed area. Concentrations (usually < 15 ppb) diminished quickly in fast flowing streams, and still faster when a spate followed spray application.

Résumé

Les concentrations de l’insecticide fenitrothion dans l’eau des ruisseaux varièrent selon l’histoire des arrosages et les conditions météorologiques. L’application de 3 oz/acre (210 g/ha) donna des concentrations de fenitrothion detectables dans les ruisseaux aussi loin que 2.5 mi (4 km) d’une région arrosée. La concentration (ordinairement < 15 ppb) diminua rapidement dans les eaux qui coulent rapidement, et plus vite quand une crue suivit l’arrosage.

Type
Articles
Information
The Canadian Entomologist , Volume 107 , Issue 7 , July 1975 , pp. 735 - 742
Copyright
Copyright © Entomological Society of Canada 1975

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References

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