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POST Control of Carolina Redroot (Lachnanthes caroliniana)

Published online by Cambridge University Press:  20 January 2017

Stephen L. Meyers ,
Katherine M. Jennings ,
David W. Monks ,
James R. Ballington  and
David L. Jordan
Stephen L. Meyers*
Affiliation:
Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
Katherine M. Jennings
Affiliation:
Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
David W. Monks
Affiliation:
Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
James R. Ballington
Affiliation:
Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
David L. Jordan
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695
*
Corresponding author's E-mail: smeyers@ext.msstate.edu
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Abstract

Greenhouse studies were conducted in 2012 in Raleigh, NC to determine Carolina redroot control by ten POST herbicides. Paraquat and glufosinate provided the greatest control 14 (73 and 64%, respectively) and 25 d (82 and 68%, respectively) after treatment (DAT), but control declined between 25 and 63 DAT (72 and 59%, respectively). Glyphosate provided minimal control 14 DAT (18%), and control increased from 14 to 25 DAT (46%) and 25 to 63 DAT (69%). Control of Carolina redroot roots and rhizomes (roots/rhizomes) was greatest in plants treated with paraquat (91%), glyphosate (88%), glufosinate (73%), hexazinone (62%), diuron (60%). Nontreated Carolina redroot shoot and root/rhizome dry weight were 8.3 and 7.6 g, respectively. Paraquat, glufosinate, glyphosate, and diuron reduced both shoot and root/rhizome dry weight (3.1 and 0.7 g, 5.1 and 2.7 g, 5.4 and 1.0, 5.7 and 1.6 g, respectively). Hexazinone reduced root/rhizome dry weight (2.7 g). Fomesafen reduced shoot dry weight (6.1 g), but did not reduce root/rhizome dry weight. Paraquat, glufosinate, glyphosate, hexazinone, diuron, and clopyralid treatments resulted in reduced incidence of Carolina redroot flowering and anthesis.

En 2012, se realizaron estudios de invernadero en Raleigh, NC para determinar el control de Lachnanthes caroliniana con diez herbicidas POST. Paraquat y glufosinate brindaron el mayor control 14 d (73 y 64%, respectivamente) y 25 d (82 y 68%, respectivamente) después del tratamiento (DAT), pero el control disminuyó entre 25 y 63 DAT (72 y 59%, respectivamente). Glyphosate brindó un control mínimo 14 DAT (18%), y el control incrementó de 14 a 25 DAT (46%) y 25 a 63 DAT (69%). El control de las raíces y rizomas (raíces/rizomas) de L. caroliniana fue mayor en plantas tratadas con paraquat (91%), glyphosate (88%), glufosinate (73%), hexazinone (62%), diuron (60%). El peso seco del tejido aéreo y raíces/rizomas de L. caroliniana sin tratar fue 8.3 y 7.6 g, respectivamente. Paraquat, glufosinate, glyphosate, y diuron redujeron el peso seco del tejido aéreo y raíces/rizomas (3.1 y 0.7 g, 5.1 y 2.7, 5.4 y 1.0, 5.7 y 1.6 g, respectivamente). Hexazinone redujo el peso seco de raíces/rizomas (2.7 g). Fomesafen redujo el peso seco del tejido aéreo (6.1 g), pero no redujo el peso seco de raíces/rizomas. Los tratamientos con paraquat, glufosinate, glyphosate, hexazinone, diuron, y clopyralid resultaron en una incidencia reducida de floración y antesis de L. caroliniana.

Keywords

Clopyraliddiuronflumioxazinfomesafenglufosinateglyphosatehalosulfuron-methylhexazinoneparaquatsethoxydimCarolina redroot, Lachnanthes caroliniana (Lam.) DandyEfficacyherbicideweed control
Type
Weed Management—Other Crops/Areas
Information
Weed Technology , Volume 27 , Issue 3 , September 2013 , pp. 534 - 537
Copyright
Copyright © Weed Science Society of America 

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Footnotes

Current address: Extension Specialist, Extension Service, Mississippi State University, Pontotoc, MS 38863.

References

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