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Small-seeded false flax (Camelina microcarpa) management in Oklahoma winter wheat

Published online by Cambridge University Press:  09 July 2021

Jodie A. Crose Open the ORCID record for Jodie A. Crose [Opens in a new window] ,
Misha R. Manuchehri  and
Todd A. Baughman
Jodie A. Crose*
Affiliation:
Former: Graduate Research Assistant, Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, USA; current: Graduate Teaching Assistant, Department of Plant Science, University of Wyoming, Sheridan, WY, USA
Misha R. Manuchehri
Affiliation:
Assistant Professor and State Extension Weed Science Specialist, Department of Plant and Soil Science, Oklahoma State University, Stillwater, OK, USA
Todd A. Baughman
Affiliation:
Professor, Institute for Agricultural Biosciences, Oklahoma State University, Ardmore, OK, USA
*
Author for correspondence: Jodie Crose, Department of Plant Science, University of Wyoming, Sheridan, WY82801. Email: jcrose@uwyo.edu
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Abstract

Three herbicide premixes have recently been introduced for weed control in wheat: halauxifen + florasulam, thifensulfuron + fluroxypyr, and bromoxynil + bicyclopyrone. The objective of this study was to evaluate these herbicides along with older products for their control of small-seeded false flax in winter wheat in Oklahoma. Studies took place during the 2017, 2018, and 2020 winter wheat growing seasons. Weed control was visually estimated every 2 wk throughout the growing season, and wheat yield was collected in all 3 yr. Small-seeded false flax diameter was approximately 6 cm at the time of application in all years. Control ranged from 96% to 99% following all treatments with the exception of bicyclopyrone + bromoxynil and dicamba alone, which controlled false flax 90%. All treatments containing an acetolactate synthase (ALS)–inhibiting herbicide achieved adequate control; therefore, resistance is not suspected in this population. Halauxifen + florasulam and thifensulfuron + fluroxypyr effectively controlled small-seeded false flax similarly to other standards recommended for broadleaf weed control in wheat in Oklahoma. Rotational use of these products allows producers flexibility in controlling small-seeded false flax and reduces the potential for development of herbicide resistance in this species.

Keywords

Bicyclopyronebromoxynildicambaflorasulamfluroxypyrhalauxifenthifensulfuronsmall-seeded false flaxCamelina microcarpa Andrz. ex DCwheatTriticum aestivum LHerbicide resistancelittlepodtank mix
Type
Research Article
Information
Weed Technology , Volume 35 , Issue 6 , December 2021 , pp. 912 - 915
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Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of the Weed Science Society of America

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Footnotes

Associate Editor: Drew Lyon, Washington State University

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