Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-10T07:00:52.554Z Has data issue: false hasContentIssue false
  • English
  • Français

Downy Brome (Bromus tectorum), Jointed Goatgrass (Aegilops cylindrica) and Horseweed (Conyza canadensis) Control in Fallow

Published online by Cambridge University Press:  12 June 2017

Allen F. Wiese ,
Clay D. Salisbury  and
Brent W. Bean
Allen F. Wiese
Affiliation:
Texas A & M Univ. Res. Ctr., 6500 Amarillo Blvd. West, Amarillo, TX 79106
Clay D. Salisbury
Affiliation:
Texas A & M Univ. Res. Ctr., 6500 Amarillo Blvd. West, Amarillo, TX 79106
Brent W. Bean
Affiliation:
Texas A & M Univ. Res. Ctr., 6500 Amarillo Blvd. West, Amarillo, TX 79106
Get access Rights & Permissions [Opens in a new window]

Abstract

Jointed goatgrass, downy brome, and horseweed are increasingly troublesome winter annual weeds during fallow periods in conservation-tillage systems in the southern Great Plains. These experiments determined the optimum weed size, vigor, and minimum herbicide rate required for 95% or better control of these weeds on fallow land. Jointed goatgrass and downy brome were controlled best when plants were 10 cm or less tall and growing vigorously at time of treatment. Horseweed was controlled best when plants were 30 cm tall and growing vigorously. Based on local retail and application costs and assuming optimum conditions for control, the two most economical herbicide treatments that controlled each weed 95% or better were: jointed goatgrass, clethodim at 250 g ai/ha and glyphosate + 2,4-D at 249 + 479 g ae/ha; downy brome, quizalofop at 18 g ai/ha and glyphosate + 2,4-D at 582 + 950 g ae/ha; and horseweed, 2,4-D at 560 g ae/ha and metsulfuron at 5 g ai/ha.

Keywords

Clethodim, (E,E)-(±)-2-[1-[[(3-chloro-2-propenyl)oxy]imino]propyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-oneglyphosate, N-(phosphonomethyl)glycinemetsulfuron, 2-[[[[4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoic acidquizalofop, (±)-2-[4-[(6-chloro-2-quinoxalinyl)oxy]phenoxy]propanoic acid2,4-D, (2,4-dichlorophenoxy)acetic aciddowny brome, Bromus tectorum L. # BROTEhorseweed, Conyza canadensis (L.) Croq. # ERICAjointed goatgrass, Aegilops cylindrica Host # AEGCYGlyphosatemetsulfuronquizalofop2,4-D
Type
Research
Information
Weed Technology , Volume 9 , Issue 2 , June 1995 , pp. 249 - 254
Copyright
Copyright © 1995 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. Anderson, R. L. 1986. Metribuzin and chlorsulfuron effect on grain of treated winter wheat (Triticum aestivum). Weed Sci. 34:734–737.Google Scholar
2. Blackshaw, R. E. 1991. Control of downy brome (Bromus tectorum) in conservation fallow systems. Weed Technol. 5:557–562.63.Google Scholar
3. Bovey, R. W. and Fenster, C. R. 1964. Aerial application of herbicides on fallow land. Weeds 12:117–119.84.Google Scholar
4. Brown, S. M. and Whitwell, T. 1988. Influence of tillage on horseweed, Conyza canadensis . Weed Technol. 2:269–270.Google Scholar
5. Bruce, J. A. and Kells, J. J. 1990. Horseweed (Conyza canadensis) control in no-tillage soybeans (Glycine max) with preplant and preemergence herbicides. Weed Technol. 4:642–647.Google Scholar
6. Buhler, D. D. 1992. Population dynamics and control of annual weeds in corn (Zea mays) as influenced by tillage systems. Weed Sci. 40:241–248.Google Scholar
7. Donald, W. W. and Ogg, A. G. Jr. 1991. Biology and control of jointed goatgrass (Aegilops cylindrica), a review. Weed Technol. 5:3–17.Google Scholar
8. Fleming, G. F., Young, F. L., and Ogg, A. G. Jr. 1988. Competitive relationships among winter wheat (Triticum aestivum), jointed goatgrass (Aegilops cylindrica) and downy brome (Bromus tectorum). Weed Sci. 36:479–486.Google Scholar
9. Keeling, J. W., Henninger, C. G., and Abernathy, J. R. 1989. Horseweed (Conyza canadensis) control in conservation tillage cotton (Gossypium hirsutum). Weed Technol. 3:399–401.Google Scholar
10. Ratliff, R. L. and Peeper, T. F. 1987. Bromus control in winter wheat (Triticum aestivum) with the ethylthio analog of metribuzin. Weed Technol. 1:235–241.Google Scholar
11. Rydrych, D. J. 1974. Competition between winter wheat and downy brome. Weed Sci. 22:211–214.Google Scholar
12. Stahlman, P. W. 1984. Downy brome (Bromus tectorum) control with diclofop in winter wheat (Triticum aestivum). Weed Sci. 32:59–62.Google Scholar
13. Stahlman, P. W. and Miller, S. D. 1990. Downy brome (Bromus tectorum) interference and economic thresholds in winter wheat (Triticum aestivum). Weed Sci. 38:224–228.Google Scholar
14. Swan, D. G. and Whitesides, R. E. 1988. Downy brome (Bromus tectorum) control in winter wheat. Weed Technol. 2:481–485.Google Scholar
15. Wiese, A. F, Bond, J. J., and Army, T. J. 1960. Chemical fallow in the Southern Great Plains. Weeds 8:284–290.Google Scholar
16. Wilson, J. S. and Worsham, A. D. 1988. Combinations of nonselective herbicides for difficult to control weeds in no-till corn, Zea mays, and soybeans, Glycine max . Weed Sci. 36:648–652.Google Scholar
17. Wilson, H. P., Hines, T. E., Bellinder, R. R., and Grande, J. A. 1985. Comparisons of HOE-39866, SC-0224, paraquat, and glyphosate in no-till corn (Zea mays). Weed Sci. 33:531–536.Google Scholar