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Broadleaf Weed Control in Soybean (Glycine max) with Chlorimuron plus Acifluorfen or Thifensulfuron Mixtures

Published online by Cambridge University Press:  12 June 2017

C. Dale Monks ,
John W. Wilcut  and
John S. Richburg III
C. Dale Monks
Affiliation:
Div. Plant and Soil Sci., P.O. Box 6108, 1090 Agric. Sci., West Virginia Univ., Morgantown, WV 26506-6108
John W. Wilcut
Affiliation:
Tidewater Agric. Exp. Stn., Va. Polytech. Inst. & State Univ., 6321 Holland Rd., Suffolk, VA 23437
John S. Richburg III
Affiliation:
Dep. Agron., Coastal Plain Exp. Stn., Univ. Georgia, Tifton, GA 31793-0748
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Abstract

Chlorimuron applied alone and in combination with acifluorfen or thifensulfuron was evaluated for POST control of common lambsquarters, common ragweed, common cocklebur, and a mixture of pitted, ivyleaf, entireleaf, and tall morningglory in soybean. Common cocklebur control was similar with thifensulfuron at 3 and 4 g ae ha−1 and with chlorimuron at 7 and 9 g ae ha−1, Common ragweed and morningglory control was greater with chlorimuron while common lambsquarters control was greater with thifensulfuron. Control of all species was good with combinations of chlorimuron at 7 g ha−1 plus thifensulfuron at 2 g ha−1 or acifluorfen at 140 g ae ha−1 and similar to or greater than the control with chlorimuron at 9 g ha−1. Soybean yields with all POST herbicide treatments were equivalent to that of the weed-free check.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidchlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoic acidthifensulfuron, 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]-carbonyl]amino]sulfonyl]-2-thiophenecarboxylic acidcommon cocklebur, Xanthium strumarium L. # XANSTcommon lambsquarters, Chenopodium album L. # CHEALcommon ragweed, Ambrosia artemisiifolia # AMBELivyleaf morningglory, Ipomoea hederacea (L.) Jacq. # IPOHEentireleaf morningglory, Ipomoea hederacea var. integruiscula Gray # IPOHGtall morningglory, Ipomoea purpurea (L.) Roth. # PHBPUpitted morningglory, Ipomoea lacunosa L. # IPOLAsoybean, Glycine max (L.) Merr. ‘Deltapine 675’ and ‘Pioneer 9581’PostemergenceAMBELCHEALIPOHEIPOHGIPOLAPHBPUXANST
Type
Research
Information
Weed Technology , Volume 7 , Issue 2 , June 1993 , pp. 317 - 321
Copyright
Copyright © 1993 Weed Science Society of America 

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