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Tolerance of pintoi peanut to PRE and POST herbicides

Published online by Cambridge University Press:  18 August 2020

Logan J. Martin ,
José Luiz C.S. Dias ,
Brent A. Sellers Open the ORCID record for Brent A. Sellers [Opens in a new window] ,
Jason A. Ferrell ,
Ramon G. Leon  and
João M.B. Vendramini
Logan J. Martin
Affiliation:
Former graduate research assistant, University of Florida-Institute of Food and Agricultural Sciences, Department of Agronomy, Range Cattle Research and Education Center, Ona, FL, USA
José Luiz C.S. Dias
Affiliation:
Former graduate research assistant, University of Florida-Institute of Food and Agricultural Sciences, Department of Agronomy, Range Cattle Research and Education Center, Ona, FL, USA
Brent A. Sellers*
Affiliation:
Professor, University of Florida-Institute of Food and Agricultural Sciences, Department of Agronomy, Range Cattle Research and Education Center, Ona, FL, USA
Jason A. Ferrell
Affiliation:
Professor and Director, University of Florida-Institute of Food and Agricultural Sciences, Center for Aquatic and Invasive Plants, Department of Agronomy, Gainesville, FL, USA
Ramon G. Leon
Affiliation:
Assistant Professor, Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, USA
João M.B. Vendramini
Affiliation:
Professor, University of Florida-Institute of Food and Agricultural Sciences, Department of Agronomy, Range Cattle Research and Education Center, Ona, FL, USA
*
Author for correspondence: Brent A. Sellers, Professor, Range Cattle Research and Education Center, 3401 Experiment Station, Ona, FL33865. Email: [email protected]
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Abstract

Pintoi peanut is a warm-season perennial legume that shows promise as a forage crop for the southeastern United States, however, little is known about the proper methods of weed management during establishment for this species. The objective of this study was to determine the ability of pintoi peanut to tolerate applications of PRE and POST herbicides during the year of and year after planting. The effects of herbicide treatments on percentage of visual estimates of injury and stand counts of pintoi peanut were investigated at Ona and Marianna, FL, in 2015 and 2016. All PRE herbicides did not result in significant injury or stand reduction. Pintoi peanut’s tolerance to POST herbicides was higher when plants were emerged for at least 2 wk prior to herbicide application. Stands of pintoi peanut that were planted the previous year appear to tolerate all herbicides examined in this work, except sulfosulfuron. Results of this study indicate that at the year of planting pintoi peanut is tolerant to PRE applications of pendimethalin, imazethapyr, and imazapic. Pintoi peanut appears to tolerate applications of 2,4-D, carfentrazone, imazapic and imazethapyr the year after planting at the rates utilized in this study. Future research should evaluate the effects of multiple herbicide applications and tank-mixes to obtain satisfactory weed control and selectivity in pintoi peanut swards.

Keywords

2,4-Dcarfentrazoneimazapicimazethapyrpendimethalinsulfosulfuronpintoi peanut, Arachis pintoi Krap. and Greg.‘Amarillo’forageslegumes
Type
Research Article
Information
Weed Technology , Volume 34 , Issue 6 , December 2020 , pp. 870 - 875
Copyright
© The Author(s), 2020. Published by Cambridge University Press on behalf of Weed Science Society of America.

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Footnotes

Associate Editor: Scott McElroy, Auburn University

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