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Response of Yankeeweed (Eupatorium compositifolium) and Associated Pasture Plants to Herbicides

Published online by Cambridge University Press:  12 June 2017

Robert E. Meyer  and
Rodney W. Bovey
Robert E. Meyer
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Dep. Range Sci., Texas A&M Univ., College Station, TX 77843
Rodney W. Bovey
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Dep. Range Sci., Texas A&M Univ., College Station, TX 77843
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Abstract

Eleven herbicides applied in May, were evaluated for yankeeweed control in East-Central Texas. Yankeeweed cover 1 yr later was reduced to 5% or less by 0.28 kg ha-1 of picloram; 0.56 kg ha-1 of clopyralid, glyphosate, or dicamba; 0.28 + 0.84 kg ha-1 of dicamba + 2,4-D, and 1.1 kg ha-1 triclopyr compared with 30% cover in the untreated area. Chlorsulfuron and metsulfuron at 0.07 kg ha-1 reduced yankeeweed cover to 12 and 7%, respectively. Dalapon, 2,4-D, and tebuthiuron were relatively ineffective. Most herbicides, reduced woolly croton cover within 1 mo after treatment compared to the untreated areas, but 2,4-D at 0.28 kg ha-1 and chlorsulfuron at 0.02 kg ha-1 and 0.07 kg ha-1 were most effective after 4 mo. All herbicides, except dalapon at 1.1 kg ha-1 or less and most rates of 2,4-D and tebuthiuron, reduced partridgepea cover during the year of application. Total grass cover was increased 4 and 12 mo following treatment with clopyralid, picloram, dicamba, and triclopyr. On separate sites, bahiagrass and coastal bermudagrass accounted for most of the increased grass cover.

Keywords

clopyralid, 3,6-dichloro-2-pyridinecarboxylic aciddalapon, 2,2-dichloropropanoic aciddicamba, 3,6-dichloro-2-methoxybenzoic acid2,4-D, (2,4-dichlorophenoxy)acetic acidglyphosate, N-(phosphonomethyl)glycinepicloram, 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acidtriclopyr, [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acidyankeeweed, Eupatorium compositifolium Walt. ♯ EUPCObahiagrass, Paspalum notatum Fluegge ♯ PASNOcoastal bermudagrass, Cynodon dactylon (L.) Pers. ♯ CYNDApartridgepea, Cassia fasciculata Michx. ♯ CASFAwoolly croton, Croton capitatus Michx. ♯ CVNCPPaspalum notatumCynodon dactylonCassia fasciculataCroton capitatusPASNOCYNDACASFACVNCP
Type
Note
Information
Weed Technology , Volume 5 , Issue 1 , March 1991 , pp. 214 - 217
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

Literature Cited

1. Correll, D. S., and Johnston, M. S. 1970. Manual of the Vascular Plants of Texas. Tex. Res. Foundation, Renner, TX. p. 1553.Google Scholar
2. Gould, F. W. 1975. Texas plants–a checklist and ecological summary. Tex. Agric. Exp. Stn. Misc. Pub. 585. p. 90.Google Scholar
3. Hanselka, C. W., Smith, K., and Wright, O. 1984. The use of ropewick applicators for the control of yankeeweed (Eupatorium compositifolium). Proc. Forage and Grassland Conf., Lexington, KY, p. 186–190.Google Scholar
4. Radford, A. E., Ahles, H. E., and Bell, C. R. 1968. Vascular Flora of the Carolinas. Univ. N.C. Press, Chapel Hill. p. 1056.Google Scholar
5. Small, J. K. 1903. Flora of the Southeastern United States. New Era Printing Co. Lancaster, PA. p. 1165.Google Scholar
6. Welch, T. G. 1988. Suggestions for chemical weed and brush control on rangeland. Tex. Agric. Ext. Serv. Bull. 1466.Google Scholar