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EFFECT OF CEREAL APHID INFESTATION ON GRAIN YIELD AND PERCENTAGE PROTEIN OF BARLEY, WHEAT, AND OATS IN SOUTHWESTERN QUEBEC

Published online by Cambridge University Press:  31 May 2012

S. A. Ba-Angood  and
R. K. Stewart
S. A. Ba-Angood
Affiliation:
Department of Entomology, Macdonald Campus of McGill University, Ste. Anne de Bellevue, Quebec H9X 1C0
R. K. Stewart
Affiliation:
Department of Entomology, Macdonald Campus of McGill University, Ste. Anne de Bellevue, Quebec H9X 1C0
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Abstract

Natural infestations of cereal aphids caused significant reductions in grain yield in field plots of early and late cultivars of barley, wheat, and oats in southwestern Quebec. Severely reduced grain yields resulted when caged plants of wheat and late cultivars of barley and oats were artificially infested, but early cultivars of barley and oats were less affected. The percentage protein of grain was significantly reduced in all crops, but wheat and late oats were most affected.

Résumé

Les infestations naturelles des pucerons des céréales ont causé des baisses significatives du rendement en grain de variétés hâtives et tardives d’orge, de blé et d’avoine dans le sud-ouest de Québec. Des infestations artificielles sur plants en cage ont réduit considérablement le rendement en grain du blé et des variétés tardives d’orge et d’avoine alors que les variétés hâtives d’orge et d’avoine ont été moins affectées. Le pourcentage de protéine des grains a été réduit significativement chez toutes les cultures, mais le blé et la variété tardive d’avoine ont été les plus touchés.

Type
Articles
Information
The Canadian Entomologist , Volume 112 , Issue 7 , 01 July 1980 , pp. 681 - 686
Copyright
Copyright © Entomological Society of Canada 1980

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