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Effect of Time of Seeding Apex Wheat on Infestation and Sex Ratio of the Wheat Stem Sawfly, Cephus cinctus Nort. (Hymenoptera: Cephidae)1

Published online by Cambridge University Press:  31 May 2012

L. A. Jacobson  and
C. W. Farstad
L. A. Jacobson
Affiliation:
Field Crop Insect Laboratory, Lethbridge, Alberta
C. W. Farstad
Affiliation:
Field Crop Insect Laboratory, Lethbridge, Alberta
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Extract

In 1945 a field experiment was designed at the Lethbridge laboratory to augment data on the effect of the time of seeding on infestation by the wheat stem sawfly, Cephus cinctus Nort. At that time one of the recommendations for the control of this insect was to delay seeding wheat until after May 15. The resulting crop escaped infestation because of the retarded plant during the period of the sawfly flight.

Type
Articles
Information
The Canadian Entomologist , Volume 84 , Issue 3 , March 1952 , pp. 90 - 92
Copyright
Copyright © Entomological Society of Canada 1952

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References

Farstad, C. W., King, K. M., and Glen, R.. 1944. Manual for sawfly control workers in Saskatchewan. Canada, Dept. Agr., Div. Ent. Mimeographed Contrib. No. 15.Google Scholar
Farstad, C. W., and Jacobson, L. A.. 1945. Manual for sawfly control workers in Alberta. Canada, Dept. Agr., Div. Ent. Mimeographed Contrib. No. 16.Google Scholar
Farstad, C. W. 1938. Thelyotokous parthenogenesis in Cephus cinctus Nort. Canadian Ent. 60: 206–207.CrossRefGoogle Scholar
Farstad, C. W., Platt, A. W., and Mc, A. J.Ginnis. 1950. Influence of wheat varieties on the sex ratio of the wheat stem sawfly, Cephus cinctus Nort. (Hymenoptera: Cephidae). 80th Ann. Rept. Ent. Soc. Ontario, 1949, pp. 27–28.Google Scholar