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Smutgrass (Sporobolus poiretii) Control in Bahiagrass (Paspalum notatum) Pastures

Published online by Cambridge University Press:  12 June 2017

B. J. Brecke
B. J. Brecke*
Affiliation:
Agric. Res. Center, Jay, FL 32565
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Abstract

Dalapon (2,2-dichloropropionic acid), tebuthiuron {N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N′-dimethylurea}, and hexazinone [3-cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine-2,4(1H,3H)-dione] were evaluated for smutgrass [Sporobolus poiretii (R.&S.) Hitchc] control in bahiagrass (Paspalum notatum Flugge.) pastures. Dalapon and hexazinone provided the best smutgrass control but injured the bahiagrass. Forage treated with hexazinone at 1.7 kg/ha or less recovered within 6 months; however, the effects of the initial injury from dalapon at 2.2 kg/ha could be detected for as long as 2 yr after treatment. Dogfennel [Eupatorium capillifolium (Lam.) Small] and broomsedge (Andropogon virginicus L.) replaced smutgrass and bahiagrass removed by dalapon. Higher rates of tebuthiuron than hexazinone (3.4 vs. 1.1 kg/ha) were required to control smutgrass adequately.

Keywords

Forage grass injurydalapontebuthiuronhexazinone
Type
Research Article
Information
Weed Science , Volume 29 , Issue 5 , September 1981 , pp. 553 - 555
Copyright
Copyright © Weed Science Society of America 

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References

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