Hostname: page-component-5d59c44645-mrcq8 Total loading time: 0 Render date: 2024-02-22T18:30:10.528Z Has data issue: false hasContentIssue false

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
Affiliation:
Alberta Environ. Centre, Vegreville, Alberta T0B 4L0
Arvind K. Sharma
Affiliation:
Alberta Environ. Centre, Vegreville, Alberta T0B 4L0
Ken J. Kirkland
Affiliation:
Scott, Saskatchewan S0K 4A0
E. Ann De St. Remy
Affiliation:
Agric. Can. Res. Stn., Lacombe, Alberta T0C 1S0

Abstract

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.

Type
Weed Biology and Ecology
Copyright
Copyright © 1988 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. Carlson, H. L. and Hill, J. E. 1985. Wild oat (Avena fatua) competition in spring wheat: Plant density effects. Weed Sci. 33:176181.Google Scholar
2. Chow, P.N.P., O'Sullivan, P. A., Hunter, J. H., and Kirkland, K. J. 1983. Control of barley and wheat in canola with BAS 9052. Can. J. Plant Sci. 63:10991102.Google Scholar
3. Cousens, R. 1985. An empirical model relating crop yield to weed and crop density and a statistical comparison with other models. J. Agric. Sci. Camb. 105:513521.Google Scholar
4. Cousens, R. 1985. A simple model relating yield loss to weed density. Ann. Appl. Biol. 107:239252.Google Scholar
5. de St. Remy, E. A., O'Donovan, J. T., Tong, A.K.W., O'Sullivan, P. A., Sharma, M. P., and Dew, D. A. 1985. Influence of Tartary buckwheat (Fagopyrum tataricum) density on yield loss of barley (Hordeum vulgare) and wheat (Triticum aestivum). Weed Sci. 33:521523.Google Scholar
6. Dew, D. A. 1972. An index of competition for estimating crop loss due to weeds. Can. J. Plant Sci. 52:921927.Google Scholar
7. Dew, D. A. and Keys, C. H. 1976. An index of competition for estimating loss of rape due to wild oats. Can. J. Plant Sci. 56:10051006.Google Scholar
8. Dwyer, L. M. and Stewart, D. W. 1987. Influence of photoperiod and water stress on growth, yield and development rate of barley measured in heat units. Can. J. Plant Sci. 67:2134.CrossRefGoogle Scholar
9. Hume, L. 1985. Crop losses in wheat (Triticum aestivum) as determined using weeded and nonweeded quadrats. Weed Sci. 33:734740.Google Scholar
10. Kirby, E.J.M. and Faris, D. G. 1970. Plant population induced growth correlation in the barley plant main shoot and possible hormonal mechanisms. J. Exp. Bot. 21:787798.Google Scholar
11. Krogman, K. K. and Hobbs, E. H. 1975. Yield and morphological response of rape (Brassica campestris L. C.V. Span) to irrigation and fertilizer treatments. Can. J. Plant Sci. 55:903909.Google Scholar
12. O'Donovan, J. T., de St. Remy, E. A., O'Sullivan, P. A., Dew, D. A., and Sharma, A. K. 1985. Influence of the relative time of emergence of wild oat (Avena fatua) on yield loss of barley (Hordeum vulgare) and wheat (Triticum aestivum). Weed Sci. 33:498503.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. 62:725731.Google Scholar
14. O'Sullivan, P. A., Weiss, G. M., and Kossatz, V. C. 1985. Indices of competition for estimating rapeseed yield loss due to Canada thistle. Can. J. Plant Sci. 65:145149.Google Scholar
15. Pavlychenko, T. K. and Harrington, J. B. 1934. Competitive efficiency of weeds and cereal crops. Can. J. Res. 10:7794.Google Scholar