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Triazine-Resistant Smooth Pigweed (Amaranthus hybridus) Control in Field Corn (Zea mays L.)

Published online by Cambridge University Press:  12 June 2017

Eric D. Birschbach ,
Mark G. Myers  and
R. Gordon Harvey
Eric D. Birschbach
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
Mark G. Myers
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
R. Gordon Harvey
Affiliation:
Dep. Agron., Univ. Wisconsin, Madison, WI 53706
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Abstract

Studies were conducted for 3 yr to evaluate herbicides and herbicide combinations for triazine-resistant smooth pigweed (TR-AMACH) control in field corn. Of the PRE treatments, combinations of atrazine plus acetochlor, metolachlor plus dicamba, and atrazine plus alachlor provided the most complete control of this weed (77 to 81%). The best early postemergence (EP) combination was pendimethalin plus atrazine plus dicamba (93% control). Pyridate plus atrazine applied POST provided a four-site average of 98% control. The most effective sequential herbicide treatments consisted of either metolachlor or pendimethalin PRE followed by POST treatments containing either pyridate, thifensulfuron, bromoxynil, or dicamba.

Keywords

bromoxynil, 3,5-dibromo-4-hydroxybenzonitrilecyanazine, 2-[[4-chloro-6-(ethylamino)-1,3,5-triazin-2-yl]amino]-2-methylpropanenitriledicamba, 3,6-dichloro-2-methoxybenzoic acidpendimethalin, N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenaminesimazine, 6-chloro-N,N′-diethyl-1,3,5-triazine-2,4,diaminetridiphane, 2-(3,5-dichlorophenyl)-2-(2,2,2-trichloroethyl)oxirane2,4-D amine, dimethylamine salt of (2,4-dichlorophenoxy)acetic acidcorn, Zea mays L.smooth pigweed, Amaranthus hybridus L. # AMACHAMACHatrazinemetribuzin
Type
Research
Information
Weed Technology , Volume 7 , Issue 2 , June 1993 , pp. 431 - 436
Copyright
Copyright © 1993 Weed Science Society of America 

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References

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