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Accepted manuscript

Effect of simulated 2,4-D and dicamba drift on strawberry plant and fruit development

Published online by Cambridge University Press:  30 October 2024

Kira C. Sims Open the ORCID record for Kira C. Sims [Opens in a new window] ,
Katherine M. Jennings ,
David W. Monks ,
David L. Jordan ,
Mark Hoffmann  and
Wayne E. Mitchem
Kira C. Sims*
Affiliation:
Graduate Student, Department of Horticultural Science, North Carolina State University, Raleigh, NC, USA
Katherine M. Jennings
Affiliation:
Associate Professor, Department of Horticultural Science, North Carolina State University, Raleigh, NC, USA
David W. Monks
Affiliation:
Professor, Department of Horticultural Science, North Carolina State University, Raleigh, NC, USA
David L. Jordan
Affiliation:
Professor, Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, USA
Mark Hoffmann
Affiliation:
Assistant Professor, Department of Horticultural Science, North Carolina State University, Raleigh, NC, USA
Wayne E. Mitchem
Affiliation:
Extension Associate and Southern Region Small Fruit Consortium Coordinator, Department of Horticultural Science, North Carolina State University, Mills River, NC, USA
*
Author for correspondence: Kira C. Sims, Graduate Student, Department of Horticultural Science, North Carolina State University, 2721 Founders Drive, Raleigh, NC 27695. (E-mail: kira.sims@auburn.edu)
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Abstract

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Greenhouse studies were conducted from 2020 to 2021 to evaluate the effect of simulated drift rates of 2,4-D and dicamba on strawberry growth, fruit development and fruit quality in Raleigh, NC. Treatments included 2,4-D choline and dicamba DGA plus Vapor Grip at 1/2x, 1/20x, and 1/200x of the 1x field rate of 1.09 and 0.8 kg ae ha-1, respectively. Treatments were applied to strawberry at three reproductive stages, including bud, flower, and fruit. Averaged across both herbicides, strawberry canopy size was reduced by the 1/2x rate 18, 25, 30, and 36% at 3, 6, 9, and 11 wk after treatment (WAT). The 1/2x rate of both herbicides caused greater injury to strawberry than the 1/20x or 1/200x, with maximum stunting from 2,4-D and dicamba of 54 and 36%, respectively. Fruit pH and SSC increased due to the 1/2x rate of dicamba compared to the 1/20x and 1/200x rates and the nontreated. Treated fruit (across all herbicides) were larger than fruit developing following herbicide application to flowers or buds but were similar to nontreated fruit.

Keywords

synthetic auxinlow-dosesmall fruit
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
© Weed Science Society of America, 2024