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Herbicide Combinations for Postemergent Weed Control in Safflower (Carthamus tinctorius)

Published online by Cambridge University Press:  12 June 2017

Robert E. Blackshaw ,
Douglas A. Derksen  and
H.-Henning Muendel
Robert E. Blackshaw
Affiliation:
Weed Sci., Agric. Can. Res. Sin., Lethbridge, AB T1J 481
Douglas A. Derksen
Affiliation:
Weed Sci., Agric. Can. Res. Stn., Indian Head, SK SOG 2K0
H.-Henning Muendel
Affiliation:
Agric. Can. Res. Stn., Lethbridge, AB T1J 481
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Abstract

Greenhouse and field studies were conducted to examine the interaction of sethoxydim or fluazifop-P tank mixed with chlorsulfuron or thiameturon for selective weed control in safflower. Under greenhouse conditions, the addition of chlorsulfuron to sethoxydim or fluazifop-P slightly improved the control of green foxtail above that achieved with either herbicide alone. Control of wild oat and wild mustard was similar with the tank mixes and each herbicide alone. In the field, control of wild oat with sethoxydim or fluazifop-P was not altered by adding chlorsulfuron or thiameturon in tank mixes. Similarly, control of common lambsquarters and wild mustard with chlorsulfuron or thiameturon was not affected by adding either sethoxydim or fluazifop-P in tank mixes. Plant height, date of flowering, seed yield, and quality data indicated that safflower tolerated these herbicides applied alone or in combination. Sethoxydim or fluazifop-P tank mixed with chlorsulfuron or thiameturon provide a postemergent alternative for selective control of grass and broadleaf weeds in safflower.

Keywords

Chlorsulfuron, 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamidefluazifop-P, (R)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acidsethoxydim, 2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-onethiameturon, 3-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]-2-thiophenecarboxylic acidsafflower, Carthamus tinctorius L. ‘Saffire’common lambsquarters, Chenopodium album L. ♯3 CHEALgreen foxtail, Setaria viridis (L.)Beauv. ♯ SETVIwild mustard, Brassica kaber (DC.) L.C. Wheeler ♯ SINARwild oat, Avena fatua L. ♯ AVEFAChlorsulfuronfluazifop-PsethoxydimthiameturonAVEFACHEALSETVISINARherbicide interactionoil contentseed weightseed yieldtank mixweed control
Type
Research
Information
Weed Technology , Volume 4 , Issue 1 , March 1990 , pp. 97 - 104
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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