Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-18T09:02:08.500Z Has data issue: false hasContentIssue false
  • English
  • Français

Sampling Quackgrass (Elytrigia repens) Populations

Published online by Cambridge University Press:  12 June 2017

Claudel Lemieux ,
Daniel C. Cloutier  and
Gilles D. Leroux
Claudel Lemieux
Affiliation:
Res. Sci., Res. Stn., Agric. Canada, 2560 Hochelaga Blvd., Sainte-Foy, Qc, Canada G1V 2J3
Daniel C. Cloutier
Affiliation:
Res. Sci., Exp. Farm, Agric. Canada, P.O. Box 3398, L'Assomption, Qc, Canada J0K 1G0
Gilles D. Leroux
Affiliation:
Dep. Plant Sci., Laval Univ., Cite Universitaire, Qc, Canada G1K 7P4
Get access Rights & Permissions [Opens in a new window]

Abstract

This work was initiated to develop a method of sampling quackgrass populations. Shoot and bud distribution of 36 field populations was obtained. The results demonstrated that shoot count was inappropriate in assessing quackgrass bud populations and that bud sampling depth should be at least 20 cm if an accurate estimate is required. When shoot count is the only possibility, quadrat size should be as large as possible to minimize the error. Descriptive statistics of the field populations were used to generate a series of 24 simulated quackgrass bud populations. The field and simulated data were computer sampled with a program designed to compare the effects of varying sample size (number of quadrats) and sample shape (quadrat size and form). The intensity of sampling must be a function of resources and cost, since sampling precision increased linearly with sample size. Precision of sampling was generally higher when a large number of small quadrats were used compared to a small number of large quadrats. Sampling intensity per unit area must be increased when bud density increases to maintain a given degree of precision, but it can be decreased when plot size increases.

Keywords

Bromoxynil, 3,5-dibromo-4-hydroxybenzonitriledicamba, 3,6-dichloro-2-methoxybenzoic acidquackgrass, Elytrigia repens (L.) Nevski #3 AGRREAgropyron repensElymus repenssample sizequadrat sizequadrat formshootrhizome budsAGRRE
Type
Weed Biology and Ecology
Information
Weed Science , Volume 40 , Issue 4 , December 1992 , pp. 534 - 541
Copyright
Copyright © 1992 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. Alex, J. F. 1987. Quackgrass: origin, distribution, description and taxonomy. Pages 7–22 in Glick, H. L., ed. Quackgrass Action Committee Workshop Technical Proceedings. March 10 and 11, 1987. Westin Hotel, Winnipeg, Manitoba.Google Scholar
2. Allen, O. B., Burton, J. H., and Holt, J. D. 1983. Analysis of repeated measurements from animal experiments using polynomial regression. J. Anim. Sci. 57:765–770.CrossRefGoogle Scholar
3. Benoit, D. L., Kenkel, N. C., and Cavers, P. B. 1989. Factors influencing the precision of soil seed bank estimates. Can. J. Bot. 67:2833–2840.Google Scholar
4. Chandrasena, N. R. and Sagar, G. R. 1989. Fluazifop toxicity to quackgrass (Agropyron repens) as influenced by some application factors and site of application. Weed Sci. 37:790–796.CrossRefGoogle Scholar
5. Darwent, A. L. 1987. Problems and losses caused by quackgrass in reduced tillage systems. Pages 69–78 in Glick, H. L., ed. Quackgrass Action Committee Workshop Technical Proceedings. March 10 and 11, 1987. Westin Hotel, Winnipeg, Manitoba.Google Scholar
6. Doyon, D., Bouchard, C.-J., and Néron, R. 1987. Inventaire des mauvaises herbes dans les cultures du Québec. Gouvernement du Québec. MAPAQ, Service de recherche en phytotechnie de Québec, Volume 1–5.Google Scholar
7. Freyman, S. and Freeman, J. 1987. Problems and losses caused by quackgrass in horticultural crops. Pages 23–41 in Glick, H. L., ed. Quackgrass Action Committee Workshop Technical Proceedings. March 10 and 11, 1987. Westin Hotel, Winnipeg, Manitoba.Google Scholar
8. Holm, L. G., Plucknett, D. L., Pancho, J. V., and Herberger, J. P. 1977. The world's worst weeds: distribution and biology. Page 153–158 in Univ. Press of Hawaii, Honolulu.Google Scholar
9. Lemieux, C., Larouche, A., Légère, A., Deschênes, J.-M., and Rioux, R. 1988. Inventaire des mauvaises herbes au Québec. Agriculture Canada. Sainte-Foy Research Station. Extension Bull. 2–4.Google Scholar
10. Leroux, G. D. 1987. Problems and losses caused by quackgrass in forage crop. Pages 43–51 in Glick, H. L., ed. Quackgrass Action Committee Workshop Technical Proceedings. March 10 and 11, 1987. Westin Hotel, Winnipeg, Manitoba.Google Scholar
11. Marshall, E.J.P. 1990. Interference between sown grasses and the growth of rhizome of Elymus repens (couch grass). Agric. Ecosyst. Environ. 33:11–22.Google Scholar
12. Mortimer, A. M. and McMahon, D. J. 1982. Time space and the growth of couch grass. Page 771–778 in Proc. of the 1982 Br. Crop Prot. Conf.—Weeds. British Crop Protection Council, Croydon.Google Scholar
13. Pageau, D. and Leroux, G. D. 1988. Seuil de nuisibilité du chiendent [Agropyron repens (L.) Beauv.] dans la luzerne (Medicago sativa L.). Can. J. Plant Sci. 68:121–130.Google Scholar
14. Palmer, J. H. 1962. Studies in the behaviour of the rhizome of Agropyron repens (L.) Beauv. II. Effect of soil factors on the orientation of the rhizome. Physiol. Plant. 15:445–451.CrossRefGoogle Scholar
15. Palmer, J. H. and Sagar, G. R. 1963. Biological flora of the British Isles: Agropyron repens (L.) Beauv. J. Ecol. 51:783–794.Google Scholar
16. SAS Institute, Inc. 1985. SAS$rg User's Guide: Statistics. Version 5 ed. SAS Inst., Inc., Cary, NC. 956 pp.Google Scholar
17. Tardif, F. 1987 Étude de la viabilité du chiendent [Agropyron repens (L.) Beauv.] dans l'est du Canada: caractérisation de dix biotypes. M.Sc. Thesis, Laval Univ. 72 pp.Google Scholar
18. Werner, P. A. and Rioux, R. 1977. The biology of Canadian weeds. 24. Agropyron repens (L.) Beauv. Can. J. Plant Sci. 57:905–919.Google Scholar
19. Williams, E. D. 1970. Effects of decreasing the light intensity on the growth of Agropyron repens (L.) Beauv. in the field. Weed Res. 10:360–366.Google Scholar
20. Williams, E. D. 1973. Variation in growth of seedlings and clones of Agropyron repens (L.) Beauv. Weed Res. 13:24–41.Google Scholar
21. Wyse, D. L. 1987. Problems and losses caused by quackgrass in the United States. Pages 53–63 in Glick, H. L., ed. Quackgrass Action Committee Workshop Technical Proceedings. March 10 and 11, 1987. Westin Hotel, Winnipeg, Manitoba.Google Scholar
22. Young, F. L., Wyse, D. L., and Jones, R. J. 1982. Influence of quackgrass (Agropyron repens) density and duration of interference on soybeans (Glycine max). Weed Sci. 30:614–619.Google Scholar
23. Young, F. L., Wyse, D. L., and Jones, R. J. 1984. Quackgrass (Agropyron repens) interference on corn (Zea mays). Weed Sci. 32:226–234.CrossRefGoogle Scholar