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Red Rice (Oryza sativa) Control with Herbicide Treatments in Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Khosro Khodayari ,
Roy J. Smith Jr.  and
Howard L. Black
Khosro Khodayari
Affiliation:
Univ. Arkansas, Rice Res.
Roy J. Smith Jr.
Affiliation:
Res. Agron., Agric. Res. Serv., U.S. Dep. Agric.
Howard L. Black
Affiliation:
Rice Res. and Ext. Ctr., Stuttgart, AR 72160
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Abstract

Preplant incorporation of alachlor [2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide] at 3.6 kg ai/ha, metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide] at 2.2 kg ai/ha, and tank mixtures of imazaquin {2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acid} with either alachlor at 0.14 + 2.2 kg ai/ha or metolachlor at 0.14 + 1.1 kg ai/ha controlled >90% red rice (Oryza sativa L. # ORYSA) in soybeans [Glycine max (L.) Merr.]. Also, FMC-57020 [2-(2-chlorophenyl)methyl-4,4-dimethyl-3-isoxazolidinone] at 1.7 kg ai/ha applied preplant incorporated controlled > 80% of the red rice. DPX-Y6202 {2-[4-[(6-chloro-2-quinoxalinyl)oxy]-phenoxy]-propionic acid, ethyl ester} was the best and most consistent postemergence herbicide treatment for red rice control when applied once at 0.28 kg ai/ha or sequentially at 0.14 kg ai/ha each time. Haloxyfop {2-[4-[[3-chloro-5-(trifluoromethyl)-2-pyridinyl]oxy] phenoxy] propanoic acid} applied at 0.16 kg ai/ha followed by another application at 0.14 kg ai/ha gave excellent red rice control in 2 of 3 years. Soybeans were uninjured by the herbicide treatments and yield was higher from treated than untreated soybeans.

Keywords

AlachlormetolachlorimazaquinFMC-57020bentazonmefluididefluazifopsethoxydimhaloxyfopDPX-Y6202ORYSA
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 35 , Issue 1 , January 1987 , pp. 127 - 129
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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