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Wild Oat (Avena fatua) Infestations and Economic Returns as Influenced by Frequency of Control

Published online by Cambridge University Press:  12 June 2017

John T. O'Donovan
John T. O'Donovan*
Affiliation:
Alberta Environ. Cent., Vegreville T0B 4L0
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Abstract

In continuous wheat or barley or in a canola/barley rotation, wild oat control every year over 4 yr maintained wild oat seedling populations at 3 plants/m2 or less. Failure to control wild oats annually increased wild oat populations (>200 plants/m2 by the fourth year) in continuous wheat dramatically, while in the other two cropping systems, populations increased to only 40 plants/m2 or less by the fourth year. In the continuous wheat and in the canola/barley rotation, wild oat control every year generally provided the best economic returns when prices and costs were averaged over 4 yr; in continuous barley, the average return was better when wild oats was controlled only in the second or third years rather than every year.

Keywords

Barley, Hordeum vulgare L. ‘Klondike’canola, Brassica campestris L. ‘Tobin’wheat, Triticum aestivum L. ‘Neepawa’wild oats, Avena fatua L. # AVEFACanola/barley rotationBrassica campestrisHordeum vulgareTriticum aestivumAVEFA
Type
Research
Information
Weed Technology , Volume 2 , Issue 4 , October 1988 , pp. 495 - 498
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

Literature Cited

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