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Barnyardgrass (Echinochloa crus-galli) and Bearded Sprangletop (Leptochloa fascicularis) Control in Rice (Oryza sativa)

Published online by Cambridge University Press:  12 June 2017

Larry G. Stauber ,
Paolo Nastasi ,
Roy J. Smith Jr. ,
Aurora M. Baltazar  and
Ronald E. Talbert
Larry G. Stauber
Affiliation:
Rice Res. Ext. Center, Univ. Arkansas, Stuttgart, AR 72160
Paolo Nastasi
Affiliation:
Rice Res. Ext. Center, Univ. Arkansas, Stuttgart, AR 72160
Roy J. Smith Jr.
Affiliation:
U.S. Dep. Agric., Res. Assoc., Rice Res. Ext. Cent., Univ. Arkansas, Stuttgart, AR 72160
Aurora M. Baltazar
Affiliation:
U.S. Dep. Agric., Res. Assoc., Rice Res. Ext. Cent., Univ. Arkansas, Stuttgart, AR 72160
Ronald E. Talbert
Affiliation:
Dep. Agron., Altheimer Lab., Univ. Arkansas, Fayetteville, AR 72703
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Abstract

Field experiments were conducted to compare efficacy of BAS 514, bromoxynil, fenoxaprop, sethoxydim, and triclopyr with standard herbicides for barnyardgrass and bearded sprangletop control in rice at four locations. Sequential applications of BAS 514 and fenoxaprop, or propanil and sethoxydim consistently controlled barnyardgrass and bearded sprangletop as well as or better than standard treatments of propanil, thiobencarb, or pendimethalin alone or combined; and rice so treated produced high yields. BAS 514 applied postemergence alone, BAS 514 applied sequentially with sethoxydim, or BAS 514 tank mixed with propanil controlled barnyardgrass but not bearded sprangletop. Bromoxynil or triclopyr tank mixed with fenoxaprop or sethoxydim antagonized activity on barnyardgrass and bearded sprangletop. Combinations of fenoxaprop with BAS 514 or propanil consistently provided barnyardgrass and bearded sprangletop control and high yields.

Keywords

BAS 514, 3,7-dichloro-8-quinolinecarboxylic acidbromoxynil, 3,5-dibromo-4-hydroxybenzonitrilefenoxaprop, (±)-2-[4-[(6-chloro-2-benzoxazolyl)oxy]phenoxy]propanoic acidpendimethalin, N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenaminepropanil, N-(3,4-dichlorophenyl)propanamidesethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onethiobencarb, S-[(4-chlorophenyl)methyl]diethylcarbamothioatetriclopyr, [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acidbarnyardgrass, Echinochloa crus-galli (L.) Beauv. ♯ ECHCGbearded sprangletop, Leptochloa fascicularis (Lam.) Gray ♯ LEFFArice, Oryza sativa L. ‘Tebonnet’, ‘Lemont’Herbicide antagonismECHCGLEFFArice injury
Type
Research
Information
Weed Technology , Volume 5 , Issue 2 , June 1991 , pp. 337 - 344
Copyright
Copyright © 1991 Weed Science Society of America 

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