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Activity of Florpyrauxifen-benzyl on Fall Panicum (Panicum dichotomiflorum Michx.) and Nealley’s Sprangletop (Leptochloa nealleyi Vasey)

Published online by Cambridge University Press:  13 September 2018

Gustavo M. Teló ,
Eric P. Webster ,
Benjamin M. McKnight ,
David C. Blouin  and
Samer Y. Rustom Jr
Gustavo M. Teló
Affiliation:
Post-Doctoral Researcher, School of Plant, Environmental, and Soil Science, Louisiana State University Agricultural Center, Baton Rouge, LA, USA
Eric P. Webster*
Affiliation:
Professor, School of Plant, Environmental, and Soil Science, Louisiana State University Agricultural Center, Baton Rouge, LA, USA
Benjamin M. McKnight
Affiliation:
Post-Doctoral Researcher, School of Plant, Environmental, and Soil Science, Louisiana State University Agricultural Center, Baton Rouge, LA, USA
David C. Blouin
Affiliation:
Professor, Department of Experimental Statistics, Louisiana State University Agricultural Center, Baton Rouge, LA, USA
Samer Y. Rustom Jr
Affiliation:
Graduate Assistant, School of Plant, Environmental, and Soil Science, Louisiana State University Agricultural Center, Baton Rouge, LA, USA
*
Author for correspondence: Eric P. Webster, School of Plant, Environmental, and Soil Science, Louisiana State University Agricultural Center, Baton Rouge, LA 70803 (E-mail: ewebster@agcenter.lsu.edu)
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Abstract

A glasshouse study was established at Louisiana State University campus in Baton Rouge, LA, to evaluate the control of fall panicum and Nealley’s sprangletop treated with florpyrauxifen-benzyl. Florpyrauxifen was applied at 30 g ai ha–1 to each grass species at the three- to four-leaf and one- to two-tiller stages of growth. At 21 d after treatment (DAT), fall panicum control was 91% when treated with florpyrauxifen at the three- to four-leaf stage, and Nealley’s sprangletop control was 78% to 82%, regardless of application timing 21 DAT. Leaf number, tiller number, plant height, and plant fresh weight were reduced when fall panicum and Nealley’s sprangletop were treated with florpyrauxifen. This information can be useful for developing weed management strategies with this herbicide for rice production, and it provides an additional mode of action to help manage and/or delay the development of herbicide-resistant weeds.

Keywords

Name & Institution: Jason Bond, Mississippi State UniversityFlorpyrauxifen-benzyl [benzyl-4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)-5-fluoropyridine-2-carboxylate]fall panicum, Panicum dichotomiflorum Michx.Nealley’s sprangletop, Leptochloa nealleyi Vaseyrice, Oryza sativa L.Annual grasssynthetic auxin
Type
Weed Management-Major Crops
Information
Weed Technology , Volume 32 , Issue 5 , October 2018 , pp. 603 - 607
Copyright
© Weed Science Society of America, 2018 

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