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Woolly Croton (Croton capitatus) and Bitter Sneezeweed (Helenium amarum) Control in the Blackland Prairie of Texas

Published online by Cambridge University Press:  12 June 2017

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

Field studies were conducted in 1984 and 1986 to identify herbicides that would control woolly croton and bitter sneezeweed on grazing land in the Blackland prairies of Texas. Herbicides included chlorsulfuron, clopyralid, dalapon, dicamba, 2,4-D, glyphosate, metsulfuron, picloram, tebuthiuron, 2,4,5-T, and triclopyr. Chlorsulfuron and metsulfuron applied at 0.018 kg ha-1 and 2,4-D, picloram, 2,4,5-T, and triclopyr at 0.28 kg ha-1 controlled >80% of the woolly croton. Metsulfuron controlled more than 90% of the bitter sneezeweed at 0.018 kg ha-1. Similar control was obtained with clopyralid, glyphosate, and picloram each at 0.28 kg ha-1. Bermudagrass cover increased with all herbicide treatments except dalapon at one of three sites.

Keywords

Chlorsulfuron, 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamideclopyralid, 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)glycinemetsulfuron, 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoic acidpicloram, 4-amino-3,5,6-trichloro-2-pyridinecarboxylic acidtebuthiuron, N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N′-dimethylurea2,4,5-T, (2,4,5-trichlorophenoxy)acetic acidtriclopyr, [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acidwoolly croton, Croton capitatus Michx. ♯3 CVNCPbitter sneezeweed, Helenium amarum (Raf.) H. Rock ♯ HENAMCynodon dactylon (L.) Pers. ♯ CYNDAChlorsulfuronclopyraliddalapondicamba2,4-Dglyphosatemetsulfuronpicloramtebuthiuron2,4,5-TtriclopyrCVNCPHENAMCYNDA
Type
Research
Information
Weed Technology , Volume 4 , Issue 4 , December 1990 , pp. 862 - 865
Copyright
Copyright © 1990 Weed Science Society of America 

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References

Literature Cited

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