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SOME OBSERVATIONS ON DIFFERENTIAL FEEDING ON MATURING WHEAT VARIETIES BY GRASSHOPPERS*

Published online by Cambridge University Press:  31 May 2012

L. A. Jacobson  and
C. W. Farstad
L. A. Jacobson
Affiliation:
Dominion Entomological Laboratory, Lethbridge, Alberta
C. W. Farstad
Affiliation:
Dominion Entomological Laboratory, Lethbridge, Alberta
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Extract

Grasshopper damage to grain is usually considered as occurring almost entirely during the growing period immediately following seeding. There is, however, considerable damage during the period from first head emergence to maturity, which may be caused through leaf defoliation, cutting of heads, or actual feeding on the glumes and kernels. The dropping of heads is usually caused by migrating grasshoppers and is noticed throughout entire fields, causing a loss of what would have been harvestable grain.

Type
Articles
Information
The Canadian Entomologist , Volume 73 , Issue 9 , September 1941 , pp. 158 - 159
Copyright
Copyright © Entomological Society of Canada 1941

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References

* Contribution No. 2099, Division of Entomology, Science Service, Department of Agriculture, Ottawa, Canada.