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Dog mustard (Erucastrum gallicum) response to crop competition

Published online by Cambridge University Press:  12 June 2017

David A. Wall
David A. Wall*
Affiliation:
Agriculture and Agri-Food Canada, Research Centre, P.O. Box 1000A, R.R.#3, Brandon, Manitoba, Canada R7A 5Y3
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Abstract

Greenhouse studies suggested that dog mustard was less competitive than wheat, but of similar competitiveness to flax. In field studies, dog mustard growth and development were markedly affected by crop competition. Competition from flax and wheat reduced dog mustard leaf area, shoot dry weight, plant height, and seed production compared with the weed grown on summer-fallow. Dog mustard was a prolific seed producer when grown in the absence of interspecific competition. On summer-fallow, dog mustard produced as many as 79,100 seeds plant−1 when moisture was not a limiting factor. However, average seed production was 19,400 and 8000 seeds plant−1 in 1994 and 1995, respectively.

Keywords

Dog mustard, Erucastrum gallicum (Willd.) O.E. Schulz ERWGAflax, Linum usitatissimum L. ‘NorLin’wheat, Triticum aestivum L. ‘AC Taber.’Competitiongrowth analysisseed productionERWGA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 45 , Issue 3 , June 1997 , pp. 397 - 403
Copyright
Copyright © 1997 by the Weed Science Society of America 

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