Hostname: page-component-745bb68f8f-d8cs5 Total loading time: 0 Render date: 2025-01-10T02:45:17.350Z Has data issue: false hasContentIssue false
  • English
  • Français

Influence of the Relative Time of Emergence of Wild Oat (Avena fatua) on Yield Loss of Barley (Hordeum vulgare) and Wheat (Triticum aestivum)

Published online by Cambridge University Press:  12 June 2017

John T. O'Donovan ,
E. Ann De St. Remy ,
P. Ashely O'Sullivan ,
Don A. Dew  and
Arvind K. Sharma
John T. O'Donovan
Affiliation:
Alberta Environ. Center, Vegreville, Alberta T0B 4L0
E. Ann De St. Remy
Affiliation:
Agric. Can. Res. Stn., Lacombe, Alberta T0C 1S0
P. Ashely O'Sullivan
Affiliation:
Agric. Can. Res. Stn., Lacombe, Alberta T0C 1S0
Don A. Dew
Affiliation:
Agric. Can. Res. Stn., Lacombe, Alberta T0C 1S0
Arvind K. Sharma
Affiliation:
Alberta Environ. Center, Vegreville, Alberta T0B 4L0
Get access Rights & Permissions [Opens in a new window]

Abstract

Multiple regression analysis of data from field experiments conducted in Alberta at two locations between 1972 and 1983 indicated that there was a significant relationship between yield loss of barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.) and relative time of emergence of wild oat (Avena fatua L. ♯ AVEFA). At a given wild oat density, percent yield loss increased the earlier wild oat emerged relative to the crops and gradually diminished the later it emerged. However, the magnitude of the yield loss for both species varied with the year. Regression equations based on data pooled over years and locations were developed to provide an estimate of yield loss of barley and wheat due to relative time of wild oat emergence and wild oat density. The information should be considered when barley and wheat losses due to wild oat are being assessed.

Keywords

Index of competitionwild oat densityAVEFA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 33 , Issue 4 , July 1985 , pp. 498 - 503
Copyright
Copyright © 1985 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Bell, A. R. and Nalewaja, J. D. 1968. Competition of wild oat in wheat and barley. Weed Sci. 16:505–508.CrossRefGoogle Scholar
2. Bell, A. R. and Nalewaja, J. D. 1968. Competitive effects of wild oat in flax. Weed Sci. 16:501–504.CrossRefGoogle Scholar
3. Bowden, B. A. and Friesen, G. 1967. Competition of wild oats (Avena fatua L.) in wheat and flax. Weed Res. 7:349–359.CrossRefGoogle Scholar
4. Carlson, H., Hill, J., and Baghott, K. 1981. Wild oat competition in spring wheat. Proc. Ann. Calif. Weed Conf. 33:13–24.Google Scholar
5. Chancellor, R. J. and Peters, N.C.B. 1972. Germination periodicity, plant survival and seed production in populations of Avena fatua L. growing in spring barley. Proc. Br. Weed Control Conf. 11:218–225.Google Scholar
6. Chancellor, R. J. and Peters, N.C.B. 1974. The time of onset of competition between wild oats (Avena fatua L.) and spring cereals. Weed Res. 14:197–202.CrossRefGoogle Scholar
7. Dew, D. A. 1972. An index of competition for estimating crop loss due to weeds. Can. J. Plant Sci. 52:921–927.CrossRefGoogle Scholar
8. Dew, D. A. 1978. Estimating crop losses caused by wild oats. Pages 15–19 in Wild Oat Action Comm. Sem. Proc., Regina, Saskatchewan.Google Scholar
9. Hamman, W. M. 1979. Field confirmation of an index for predicting yield losses of wheat and barley due to wild oat competition. Can. J. Plant Sci. 59:243–244.CrossRefGoogle Scholar
10. McBeath, D. K., Dew, D. A., and Friesen, H. A. 1970. Competition between barley and wild oats as affected by nitrogen, barban and time of seeding. Can. J. Plant Sci. 50:541–550.CrossRefGoogle Scholar
11. Nalewaja, J. D. 1977. Wild oats: global gloom. Proc. West. Soc. Weed Sci. 30:21–32.Google Scholar
12. O'Donovan, J. T. and Sharma, M. P. 1983. Wild oats, competition and crop losses. Pages 27–37 in Wild Oat Action Comm. Proc., Regina, Saskatchewan.Google Scholar
13. O'Sullivan, P. A., Kossatz, V. C., Weiss, G. M., and Dew, D. A. 1982. An approach to estimating yield loss of barley due to Canada thistle. Can. J. Plant Sci. 62:725–731.CrossRefGoogle Scholar
14. Pavlychenko, T. K. and Harrington, J. B. 1934. Competitive efficiency of weeds and cereal crops. Can. J. Res. 10:77–94.CrossRefGoogle Scholar
15. Peters, N.C.B. and Wilson, B. J. 1983. Some studies on the competition between Avena fatua L. and spring barley. II. Variation of A. fatua emergence and development and its influence on crop yield. Weed Res. 23:305–311.CrossRefGoogle Scholar
16. Thurston, J. M. 1962. The effect of competition from cereal crops on the germination and growth of Avena fatua L. in a naturally infested field. Weed Res. 2:192–207.CrossRefGoogle Scholar
17. Wimschneider, W. and Bachtalor, G. 1979. Studies on the competition for light between Avena fatua L. and several varieties of spring wheat. Pages 249–256 in Proc. EWRS Symposium on the Influence of Different Factors on the Development and Control of Weeds, Mainz.Google Scholar