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Glyphosate‐Resistant Soybean Response to Micro‐Rates of Three Dicamba‐Based Herbicides

Glyphosate‐Resistant Soybean Response to Micro‐Rates of Three Dicamba‐Based Herbicides Abbreviationsa.e.acid equivalentDATdays after treatmentDRdicamba‐resistantEDestimated doseGRglyphosate‐resistantSEstandard errorDicamba (3,6‐dichloro‐2‐methoxybenzoic acid) use is on the increase, especially in dicamba‐resistant (DR) soybean [Glycine max (L.) Merr.] and cotton (Gossypium hirsutum L.) for control of broadleaf weeds that are hard‐to‐control and/or resistant to other herbicides (Norsworthy et al., 2011; Meyer et al., 2015; Ganie and Jhala, 2017; Osipitan and Dille, 2017; Underwood et al., 2017). However, the off‐target movement of dicamba‐based herbicides to non‐DR soybean and other broadleaf crops has become a major concern. During the 2017 growing season, 1.2 million ha of crops were injured by dicamba drift, which led to various forms of litigations (Bradley, 2017a; Knezevic et al., 2018; Secor, 2018). The negative impact of dicamba on non‐DR soybean can vary with soybean type, dicamba rate, and soybean growth stage at the time of drift occurrence. Drift is possible at different growth stages of sensitive soybean, because in DR crops application can be made at pre‐plant, at planting, and post‐emergence (up to flowering time) (Griffin et al., 2013).The majority of the 36 million ha of soybean in the United States are planted to non‐DR varieties such as glyphosate (N‐(phosphonomethyl)glycine))–resistant (GR) soybean (Bradley, 2017b; Secor, 2018). The off‐target movement of dicamba from http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Agrosystems, Geosciences & Environment" Wiley

Glyphosate‐Resistant Soybean Response to Micro‐Rates of Three Dicamba‐Based Herbicides

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References (30)

Publisher
Wiley
Copyright
© American Society of Agronomy
eISSN
2639-6696
DOI
10.2134/age2018.10.0052
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Abstract

Abbreviationsa.e.acid equivalentDATdays after treatmentDRdicamba‐resistantEDestimated doseGRglyphosate‐resistantSEstandard errorDicamba (3,6‐dichloro‐2‐methoxybenzoic acid) use is on the increase, especially in dicamba‐resistant (DR) soybean [Glycine max (L.) Merr.] and cotton (Gossypium hirsutum L.) for control of broadleaf weeds that are hard‐to‐control and/or resistant to other herbicides (Norsworthy et al., 2011; Meyer et al., 2015; Ganie and Jhala, 2017; Osipitan and Dille, 2017; Underwood et al., 2017). However, the off‐target movement of dicamba‐based herbicides to non‐DR soybean and other broadleaf crops has become a major concern. During the 2017 growing season, 1.2 million ha of crops were injured by dicamba drift, which led to various forms of litigations (Bradley, 2017a; Knezevic et al., 2018; Secor, 2018). The negative impact of dicamba on non‐DR soybean can vary with soybean type, dicamba rate, and soybean growth stage at the time of drift occurrence. Drift is possible at different growth stages of sensitive soybean, because in DR crops application can be made at pre‐plant, at planting, and post‐emergence (up to flowering time) (Griffin et al., 2013).The majority of the 36 million ha of soybean in the United States are planted to non‐DR varieties such as glyphosate (N‐(phosphonomethyl)glycine))–resistant (GR) soybean (Bradley, 2017b; Secor, 2018). The off‐target movement of dicamba from

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"Agrosystems, Geosciences & Environment" – Wiley

Published: Jan 1, 2019

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