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Note on Strains of the Cabbage Maggot, Hylemya brassicae (Bouché), (Diptera: Anthomyiidae), Resistant to the Chlorinated Hydrocarbon Insecticides in Western Newfoundland1

Published online by Cambridge University Press:  31 May 2012

Ray F. Morris
Ray F. Morris
Affiliation:
Experimental Farm, St. John's West, Newfoundland.
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Extract

In October, 1960, growers in the Robinsons-St. Davids area of Newfoundland reported that aldrin and heptachlor no longer protected rutabagas and cabbage adequately from attack by the cabbage maggot, Hylemya brassicae (Bouché).

In 1961, an experiment was conducted in the area, at Jeffreys, to determine if strains resistant to chlorinated hydrocarbons had developed. Six plots, each containing 58 cabbage plants, were set up on June 13 in an area heavily infested with the maggot in the previous years. The insecticides, rates of application, and results obtained are shown in Table I. All treatments were applied two days after transplanting and concentrated in the soil around the stems of the plants.

Type
Articles
Information
The Canadian Entomologist , Volume 95 , Issue 1 , January 1963 , pp. 81 - 82
Copyright
Copyright © Entomological Society of Canada 1963

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References

1.Morris, Ray F.Control of root maggots in swede turnips in Newfoundland with heptachlor and aldrin and the effect on parasites and overwintering pupae. J. Econ. Ent. 53: 65–67. 1960.CrossRefGoogle Scholar
2.Howitt, A. J., and Cole, S. G.. Chemical control of Hylemya brassicae Bouché in the Pacific northwest. J. Econ. Ent. 55: 33–38. 1962.CrossRefGoogle Scholar
3.Harris, C. R., Manson, G. F., and Mazurek, J. H.. Development of insecticide resistance by soil insects in Canada. J. Econ. Ent. (In Press).Google Scholar