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Effect of Duration of Wild Oat Competition in Flax

Published online by Cambridge University Press:  12 June 2017

Allyn R. Bell  and
John D. Nalewaja
Allyn R. Bell
Affiliation:
Department of Agronomy, North Dakota State University, Fargo
John D. Nalewaja
Affiliation:
Department of Agronomy, North Dakota State University, Fargo
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Abstract

Wild oat (Avena fatua L.) was removed at several stages of growth from flax (Linam usitatissimum L.) plots in 1964, 1965, and 1966. The flaxseed yield was reduced as the period of competition increased during each year. In 1965, competition from wild oat until the 4 to 5-leaf stage reduced the flaxseed yield 15.1% while competition until maturity reduced the yield 74.9%. The number of bolls/sq ft also was reduced as the period of competition increased; but the number of seed/boll, plants/sq ft, and the weight/1000 seed were not affected consistently by wild oat competition. Both the percent oil of flaxseed and the iodine number of the oil were reduced by wild oat competition, but not until the wild oat was in the heading stage and the flax was in the boll stage.

Type
Research Article
Information
Weed Science , Volume 16 , Issue 4 , October 1968 , pp. 509 - 512
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Bell, A. R. and Nalewaja, J. D. 1968. Competitive effects of wild oat in flax. Weeds 16:501–504.Google Scholar
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