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Nontuberous Sedge and Kyllinga Species' Response to Herbicides

Published online by Cambridge University Press:  20 January 2017

Jason L. Belcher ,
Robert H. Walker ,
Edzard Van Santen  and
Glenn R. Wehtje
Jason L. Belcher*
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn, AL 36849
Robert H. Walker
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn, AL 36849
Edzard Van Santen
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn, AL 36849
Glenn R. Wehtje
Affiliation:
Department of Agronomy and Soils, Auburn University, Auburn, AL 36849
*
Corresponding author's E-mail: [email protected]
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Abstract

Annual, cylindric, and globe sedges were controlled > 90% with a single application of MSMA at 2.2 kg ai/ha in field studies. But this same treatment controlled fragrant and green kyllingas only 69 and 52%, respectively. Control was increased to 82 and 81%, respectively, with a repeat application. Other postemergence-applied (POST) herbicides evaluated included bentazon, halosulfuron, imazapic, imazaquin, and CGA-362622. Postemergence-applied herbicides were applied either once or twice, as well as alone and in combination with MSMA. In general, a sequential application of MSMA, either alone or in combination with any of the aforementioned herbicides, except bentazon, provided maximum control of the sedge and kyllinga species evaluated. Preemergence-applied (PRE) oxadiazon and S-metolachlor, controlled annual sedge ≥ 94% at 7 wk after treatment (WAT) in field studies and 96 and 70% at 9 WAT, respectively. Dithiopyr and prodiamine provided 86 to 80% control of annual sedge over the 9-wk rating period. In a hydroponic-type laboratory study, oxadiazon and S-metolachlor were more effective than atrazine, bensulide, imazaquin, oryzalin, or simazine, in reducing seedling development of annual, cylindric, and globe sedges, and green kyllinga.

Keywords

AtrazinebensulidebentazonCGA-362622 (proposed common name trifloxysulfuron), N-([(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl)-3-(2,2,2-trifluoroethoxy)-pyridin-2-sulfonamide sodium saltdithiopyrhalosulfuronimazapicimazaquinS-metolachlorMSMAoryzalinoxadiazonprodiaminesimazineannual sedge, Cyperus compressus L. #3 CYPCPcylindric sedge, Cyperus retrorsus Chapm. # CYPRTfragrant kyllinga, Kyllinga odorata Vahl. [Cyperus sesquiflorus (Torr.) Mattf. and Kuekenth.](no code)globe sedge, Cyperus globulosus Aubl. # CYPGLgreen kyllinga, Kyllinga brevifolia Rottb. # KYLBRCYPCPCYPGLCYPRTKYLBRturfgrass weed controlPOST, postemergencePRE, preemergenceWAIT, weeks after initial treatmentWAT, weeks after treatment
Type
Research
Information
Weed Technology , Volume 16 , Issue 3 , September 2002 , pp. 575 - 579
Copyright
Copyright © Weed Science Society of America 

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References

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