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Horseweed (Conyza canadensis) Control in Full-Season No-Till Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Carroll M. Moseley and
Edward S. Hagood Jr.
Carroll M. Moseley
Affiliation:
Dep. Plant Pathol., Physiol., Weed Sci., Va. Polytech. Inst. State Univ., Blacksburg, VA 24061
Edward S. Hagood Jr.
Affiliation:
Dep. Plant Pathol., Physiol., Weed Sci., Va. Polytech. Inst. State Univ., Blacksburg, VA 24061
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Abstract

Cyanazine and 2,4-D were the most effective herbicides for horseweed control before establishing full-season no-till soybeans. Paraquat plus 2,4-D was less effective than 2,4-D alone but superior to paraquat alone. Chlorimuron plus metribuzin or chlorimuron plus linuron was less effective than cyanazine but controlled horseweed better than metribuzin, linuron, or imazaquin. Herbicides were generally more effective when applied early. These studies indicate paraquat was antagonistic to 2,4-D for horseweed control when these herbicides were combined.

Keywords

Chlorimuron, 2-[[[[(4-chloro-6-methoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoic acidcyanazine, 2-[[4-chloro-6-(ethylamino)-1,3,5-triazin-2-yl]amino]-2-methylpropanenitrileimazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidlinuron, N′-(3,4-dichlorophenyl)-N-methoxy-N-methylureametribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-oneparaquat, 1,1′-dimethyl-4,4′-bipyridinium ion2,4-D, (2,4-dichlorophenoxy)acetic acidhorseweed, Conyza canadensis (L.) Cronq. ♯3 ERICAsoybean, Glycine max (L.) Merr.Chlorimuroncyanazineimazaquinlinuronmetribuzinparaquat2,4-D

Information

Type
Research
Information
Weed Technology , Volume 4 , Issue 4 , December 1990, pp. 814 - 818
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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