Effects of Low-Dose Flumioxazin and Metribuzin Postemergence Applications on Soybean

All herbicides will move off-target to sensitive crops when not applied correctly. Therefore, low-dose applications of flumioxazin and metribuzin were evaluated in soybean at the unifoliate, V2, and V4 growth stages. Rates evaluated were 12.5%, 25%, and 50% of the labeled use rates of 72 and 316 g a...

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Bibliographic Details
Published in:Weed technology 2019-02, Vol.33 (1), p.87-94
Main Authors: Stephenson, Daniel O, Spivey, Todd A, Deliberto, Michael A, Blouin, David C, Woolam, Brandi C, Buck, Trace B
Format: Article
Language:English
Subjects:
Agricultural production
Chlorosis
Crop yield
Crops
Grain
Growth stage
Herbicides
Impact analysis
Injury prevention
Metribuzin
Necrosis
Off-target movement
Revenue
Sorghum
Soybeans
tank contamination
Weeds
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Summary:All herbicides will move off-target to sensitive crops when not applied correctly. Therefore, low-dose applications of flumioxazin and metribuzin were evaluated in soybean at the unifoliate, V2, and V4 growth stages. Rates evaluated were 12.5%, 25%, and 50% of the labeled use rates of 72 and 316 g ai ha–1 of flumioxazin and metribuzin, respectively. Flumioxazin injury was characterized by necrosis and visible height and width reduction. Injury increased with rate 3 d after treatment (DAT), with unifoliate, V2, and V4 soybean injured 15% to 30%, 18% to 27%, and 5% to 8%, respectively. Unifoliate and V4 soybean were injured more than V4 soybean 3 to 14 DAT, but injury decreased to
ISSN:0890-037X
1550-2740
DOI:10.1017/wet.2018.101