Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-25T18:33:46.823Z Has data issue: false hasContentIssue false
  • English
  • Français

Downy Brome (Bromus tectorum) Control in Established Alfalfa (Medicago sativa)

Published online by Cambridge University Press:  12 June 2017

Robert G. Wilson
Robert G. Wilson*
Affiliation:
Department of Agronomy, University of Nebraska, Scottsbluff, NE 69361
Get access Rights & Permissions [Opens in a new window]

Abstract

Two experiments were conducted near Scottsbluff, NE, to evaluate the efficacy of fall-and spring-applied herbicides for downy brome control in established alfalfa. Downy brome was effectively removed from established alfalfa, and alfalfa yield increased with fall applications of hexazinone, metribuzin, pronamide, and terbacil. Regression analysis indicated a linear relationship between alfalfa yield and downy brome biomass. Glyphosate or paraquat suppressed downy brome when applied to dormant alfalfa in the spring. If glyphosate or paraquat application was delayed until after alfalfa had resumed spring growth, injury was observed. Alfalfa yield did not increase following spring applications of glyphosate or paraquat.

Keywords

Glyphosate, N-(phosphonomethyl) glycinehexazinone, 3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4 (1H,3H)-dionemetribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-oneparaquat, 1,1'-dimethyl-4,4'-bipyridinium ionpronamide, 3,5-dichloro (N-1,1-dimethyl-2-propynyl)benzamideterbacil, 5-chloro-3-(1,1-dimethylethyl)-6-methyl-2,4(1H,3H)-pyrimidinedionedowny brome, Bromus tectorum L. # BROTEalfalfa, Medicago sativa L.DiuronglyphosatehexazinonemetribuzinparaquatpronamideterbacilthiazopyrBROTE
Type
Research
Information
Weed Technology , Volume 11 , Issue 2 , June 1997 , pp. 277 - 282
Copyright
Copyright © 1997 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

Anonymous. 1955. Official methods of analysis, 8th ed. Washington, DC: Associated Analytic Chemists.Google Scholar
Anonymous. 1995. 1994–1995 Nebraska Agricultural Statistics. Nebraska Agricultural Statistics Service. 164 p.Google Scholar
Chase, R. L. and Appleby, A. P. 1979. Effect of humidity and moisture stress on glyphosate control of Cyperus rotundus L. Weed Res. 19:241–246.Google Scholar
Cords, H. P. 1973. Weeds and alfalfa quality. Weeds 21:400–401.Google Scholar
Cosgrove, D. R. and Barrett, M. 1987. Effects of weed control in established alfalfa (Medicago sativa) on forage yield and quality. Weed Sci. 35:564–567.Google Scholar
Cudney, D. W., Orloff, S. G., and Demason, D. A. 1993. Effects of thiazopyr and trifluralin on dodder (Cuscuta indecora) in alfalfa (Medicago sativa). Weed Technol. 7:860–864.Google Scholar
Dawson, J. H. 1990. Newly seeded alfalfa (Medicago sativa) tolerates glyphosate and SC-0224 at doses that control dodder (Cuscuta spp.), Weed Technol. 4:876–879.Google Scholar
Hoagland, R. E., Duke, S. O., and Elmore, C. D. 1978. Effects of glyphosate on metabolism of phenolic compounds. II. Influence on soluble hydroxyphenolic compounds, free amino acid and soluble protein levels in dark-grown maize roots. Plant Sci. Lett. 13:291–295.Google Scholar
Kapusta, G. and Strieker, C. F. 1975. Selective control of downy brome in alfalfa. Weed Sci. 23:202–206.CrossRefGoogle Scholar
Martin, A. R., Roeth, F. W., Wilson, R. G., Wicks, G. A., Klein, R. N., Holshouser, D. L., and Lyon, D. J. 1995. A 1995 guide for herbicide use in Nebraska. Nebraska Cooperative Extension EC 95-130-D. 70 p.Google Scholar
Nilsson, G. 1977. Effects of glyphosate on the amino acid content in spring wheat plants. Swed. J. Agric. Res. 7:153–157.Google Scholar
Peters, E. J., McKelvey, R. A., and Mattos, R. 1984. Controlling weeds in dormant and nondormant alfalfa (Medicago sativa). Weed Sci. 32:154–157.Google Scholar
Robison, L. R., Williams, C. F., and Laws, W. D. 1978. Weed control in established alfalfa (Medicago sativa). Weed Sci. 26:37–40.Google Scholar
Wilson, R. G. 1981. Weed control in established dryland alfalfa (Medicago sativa). Weed Sci. 29:615–618.CrossRefGoogle Scholar
Wilson, R. G. 1989. New herbicides for weed control in established alfalfa (Medicago sativa). Weed Technol. 3:523–526.CrossRefGoogle Scholar