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Accepted manuscript

Dose-response of common lambsquarters, redroot pigweed, and foxtail species to pyroxasulfone plus encapsulated saflufenacil applied preemergence in corn

Published online by Cambridge University Press:  05 November 2025

Erica D. Nelson ,
Nader Soltani Open the ORCID record for Nader Soltani [Opens in a new window] ,
Christopher Budd Open the ORCID record for Christopher Budd [Opens in a new window] ,
Peter H. Sikkema  and
Darren E. Robinson
Erica D. Nelson
Affiliation:
Graduate Student, Department of Plant Agriculture, University of Guelph, 120 Main St. East, Ridgetown, ON, N0P 2C0, Canada
Nader Soltani*
Affiliation:
Adjunct Professor, Department of Plant Agriculture, University of Guelph, 120 Main St. East, Ridgetown, ON, N0P 2C0, Canada
Christopher Budd
Affiliation:
Senior Biologist, BASF Canada Inc., 1288 Glanworth Dr, N6N 1H1, London, ON, Canada
Peter H. Sikkema
Affiliation:
Professor Emeritus, Department of Plant Agriculture, University of Guelph, 120 Main St. East, Ridgetown, ON, N0P 2C0, Canada
Darren E. Robinson
Affiliation:
Professor, Department of Plant Agriculture, University of Guelph, 120 Main St. East, Ridgetown, ON, N0P 2C0, Canada
*
Author for correspondence: Nader Soltani, Department of Plant Agriculture, University of Guelph Ridgetown Campus, 120 Main Street East, Ridgetown, ON, Canada N0P 2C0. Email: soltanin@uoguelph.ca
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Abstract

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The premixture of pyroxasulfone and encapsulated saflufenacil is a new herbicide from BASF. There is limited research conducted on the biologically effective dose of pyroxasulfone and encapsulated saflufenacil premixture for the control of common lambsquarters, redroot pigweed, and green foxtail. A total of six field experiments were conducted over two years (2022 and 2023) at three locations in southwestern Ontario to determine the ED50 of pyroxasulfone plus encapsulated saflufenacil for the control of common lambsquarters, redroot pigweed, and green foxtail. Assessment of visual weed control 8 WAE established the ED50 for redroot pigweed, common lambsquarters, and green foxtail control were 170, 219, and 240 g ai ha-1, respectively. The results of this study conclude that a higher dose of pyroxasulfone and encapsulated saflufenacil is necessary for agronomically acceptable control (>80%) of redroot pigweed, common lambsquarters, and green foxtail than the proposed label rate (146 to 245 g ai ha-1).

Keywords

Corn injurycorn yielddose-responseencapsulationherbicide formulationpreemergence herbicidesspecies-specific

Information

Type
Research Article
Information
Weed Technology , Accepted manuscript , pp. 1 - 19
Creative Commons
Creative Common License - CCCreative Common License - BYCreative Common License - NCCreative Common License - ND
This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is unaltered and is properly cited. The written permission of Cambridge University Press must be obtained for commercial re-use or in order to create a derivative work.
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of Weed Science Society of America