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Postemergence Grass Control in Sweet Potatoes (Ipomoea batatas)

Published online by Cambridge University Press:  12 June 2017

Wayne C. Porter
Wayne C. Porter*
Affiliation:
La. State Univ. Agric. Cent., La. Agric. Exp. Stn., Hammond Res. Stn., Hammond, LA 70403
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Abstract

Fluazifop-P, sethoxydim, and quizalofop were evaluated over two years for postemergence annual grass control in sweet potatoes. All treatments controlled broadleaf signalgrass and large crabgrass, but in 1987 only rates of at least 0.14 kg/ha of fluazifop-P and quizalofop and 0.28 kg/ha of sethoxydim controlled large crabgrass. No. 1 grade and total yield were greater from plots treated with herbicides compared with the weedy check in 1986. In 1987, No. 1 grade and total yield were greater in plots treated with fluazifop-P at 0.14 kg/ha or higher and sethoxydim or quizalofop at 0.28 kg/ha or higher.

Keywords

Fluazifop-P, (R)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidquizalofop, (+)-2-[4(6-chloro-2-quinoxalinyl) oxy]phenoxy]propanoic acidsethoxydim 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onesweet potato, Ipomoea batatas (L.) Lam. ‘Centennial’broadleaf signalgrass, Brachiaria platyphylla (Griseb.) Nash. # BRAPPlarge crabgrass, Digitaria sanguinalis (L.) Scop. # DIGSAFluazifop-PquizalofopsethoxydimBrachiaria platyphyllaDigitaria sanguinalisBRAPPDIGSA
Type
Research
Information
Weed Technology , Volume 7 , Issue 4 , December 1993 , pp. 812 - 815
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

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