Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean

Protoporphyrinogen oxidase- (PPO-) resistant Amaranthus palmeri (S.) Wats. (Palmer amaranth) was confirmed in Arkansas in 2015. Field trials were conducted in Crawfordsville, Gregory, and Marion, Arkansas in 2016, and Crawfordsville and Marion in 2017, assessing PPO-resistant Palmer amaranth control...

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Bibliographic Details
Published in:International journal of agronomy 2021, Vol.2021, p.1-8
Main Authors: Houston, Michael M., Barber, L. Tom, Norsworthy, Jason K., Roberts, Trent L.
Format: Article
Language:English
Subjects:
Acetolactate synthase
Amaranth
Amaranthus palmeri
Evaluation
Fatty acids
Herbicides
Metolachlor
Metribuzin
Oxidase
Photosystem II
Precipitation
Protoporphyrinogen oxidase
Seeds
Soybeans
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Summary:Protoporphyrinogen oxidase- (PPO-) resistant Amaranthus palmeri (S.) Wats. (Palmer amaranth) was confirmed in Arkansas in 2015. Field trials were conducted in Crawfordsville, Gregory, and Marion, Arkansas in 2016, and Crawfordsville and Marion in 2017, assessing PPO-resistant Palmer amaranth control options in Glycine max (L.) Merr. (soybean). Twelve trials consisted of 26 preemergence (PRE) treatments, evaluated for Palmer amaranth control and density reduction at 28 days after treatment (DAT). Treatments that consisted of PPO- or acetolactate synthase- (ALS-) inhibiting herbicides such as flumioxazin (72 g ai ha−1) or sulfentrazone + cloransulam (195 g ha−1 + 25 g ha−1) controlled Palmer amaranth
ISSN:1687-8159
1687-8167
DOI:10.1155/2021/6652382