Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-26T22:40:01.840Z Has data issue: false hasContentIssue false
  • English
  • Français

Weed Control in Established Alfalfa (Medicago sativa) with Postemergence Herbicides

Published online by Cambridge University Press:  20 January 2017

María C. Arregui ,
Daniel Sánchez  and
Roberto Scotta
María C. Arregui*
Affiliation:
Kreder 2805, 3080 Esperanza, Argentina
Daniel Sánchez
Affiliation:
Kreder 2805, 3080 Esperanza, Argentina
Roberto Scotta
Affiliation:
Kreder 2805, 3080 Esperanza, Argentina
*
Corresponding author's E-mail: [email protected].
Get access Rights & Permissions [Opens in a new window]

Abstract

Field experiments were conducted during 1998, 1999, and 2000 in Santa Fe, Argentina, to evaluate chlorimuron, clethodim, flumetsulam, 2,4-DB, glyphosate, and haloxyfop for control of broadleaf and grass weeds in established alfalfa. Herbicides were applied to alfalfa, 6 to 10 cm in height, after first or second cuttings. Clethodim and haloxyfop were highly effective against bermudagrass, barnyardgrass, and knotroot foxtail, and alfalfa yields were increased. 2,4-DB was effective against Scotch thistle, swinecress, turnipweed, and birdsrape mustard, but no effects were observed on alfalfa yields. Chlorimuron, flumetsulam, and glyphosate were effective against burning nettle, common chickweed, common lambsquarters, spiny cocklebur, and Persian speedwell, but they injured alfalfa and decreased yields.

Keywords

Chlorimuronclethodim2,4-DBflumetsulamglyphosatehaloxyfopalfalfa, Medicago sativa (L.)barnyardgrass, Echinochloa crus-galli (L.) Beauv. # ECHGAbermudagrass, Cynodon dactylon (L.) Pers. # CYNDAbirdsrape mustard, Brassica rapa (L.) # BRACAburning nettle, Urtica urens (L.) # URTURcommon chickweed, Stellaria media (L.) Villars # STEMEcommon lambsquarters, Chenopodium album (L.) # CHEALknotroot foxtail, Setaria geniculata (Lam.) Beauv. # SETGEPersian speedwell, Veronica persica Poir. # VERPEScotch thistle, Onopordum acanthium (L.);spiny cocklebur, Xanthium spinosum (L.) # XANSPswinecress, Coronopus didymus Sm. # COPDIturnipweed, Rapistrum rugosum (L.) All. # RASRUDATdays after treatment
Type
Research
Information
Weed Technology , Volume 15 , Issue 3 , September 2001 , pp. 424 - 428
Copyright
Copyright © 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

Arregui, M. C., Sanchez, D., and Scotta, R. 1994. Estimación de las pérdidas causadas por malezas en alfalfa. Rev. FAVE 8: 53–60.CrossRefGoogle Scholar
Arregui, M. C., Sanchez, D., and Scotta, R. 1999. Efecto del baraval sobre el crecimiento de alfalfa. Rev. FAVE 12: 9–17.Google Scholar
Fischer, A. J., Dawson, J. H., and Appleby, A. P. 1988. Interference of annual weeds in seedling alfalfa (Medicago sativa). Weed Sci. 36: 583–588.Google Scholar
Foy, C. L. and Witt, H. L. 1992. Annual grass control in alfalfa (Medicago sativa) with postemergence graminicides. Weed Technol. 6: 938–948.Google Scholar
Lopez, J. A. and Romera, J. L. 1993. Evaluación de flumetsulam (Preside) en alfalfa en implantación. Rafaela: INTA, Informe preliminar. 10 p.Google Scholar
Tonks, D. I., Jeffery, L. S., and Webb, B. L. 1991. Response of seedling alfalfa (Medicago sativa) to four postemergence herbicides. Weed Technol. 5: 736–738.Google Scholar
Twidwell, E. K., Kephart, K. D., and Clay, S. A. 1994. Quackgrass control in established alfalfa with sethoxydim. Can. J. Plant Sci. 74: 647–651.Google Scholar
Waddington, J. 1987. Effects of herbicides and their application time on alfalfa forage production. Can. J. Plant Sci. 67: 849–852.CrossRefGoogle Scholar
Wilson, R. 1997. Downy brome (Bromus tectorum) in established alfalfa (Medicago sativa). Weed Technol. 11: 277–282.Google Scholar
Wolfe, E. C. and Southwood, O. R. 1980. Plant productivity and persistence in mixed pastures containing lucerne at a range of densities with subterranean clover or phalaris. Aust. J. Exp. Agric. Anim. Husb. 20: 189–196.Google Scholar