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Volunteer Barley (Hordeum vulgare) Interference in Canola (Brassica campestris and B. napus)

Published online by Cambridge University Press:  12 June 2017

John T. O'Donovan
Alberta Environ. Centre, Vegreville, Alberta T0B 4L0
Arvind K. Sharma
Alberta Environ. Centre, Vegreville, Alberta T0B 4L0
Ken J. Kirkland
Scott, Saskatchewan S0K 4A0
E. Ann De St. Remy
Agric. Can. Res. Stn., Lacombe, Alberta T0C 1S0


The yield potential and the effect on yield loss of canola of different densities of volunteer barley were investigated at three locations in western Canada. Field studies were conducted from 1982 to 1986. Rectangular hyperbolic models based on data pooled over years, locations, and canola cultivars, and incorporating different densities of volunteer barley and canola accurately portrayed field responses in most instances. Results indicated that volunteer barley severely reduced canola yield. However, financial losses due to reduced canola yield were partly offset by the volunteer barley crop.

Weed Biology and Ecology
Copyright © 1988 by the Weed Science Society of America 

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