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Sulfonylurea Herbicides Reduce Survival and Seed Production of Green and Yellow Foxtails (Setaria spp.)

Published online by Cambridge University Press:  12 June 2017

Mohammad Khan  and
William W. Donald
Mohammad Khan
Affiliation:
Crop Weed Sci. Dep., N. D. State Univ., Fargo, ND 58105
William W. Donald
Affiliation:
Agric. Res. Inst., Tarnab (Peshawar) NWFP, Pakistan, and Res. Agron., U.S. Dep. Agric., Agric. Res. Serv., Biosciences Res. Lab., Fargo U.S. Dep. Agric., Agric. Res. Serv., Dep. Agric. Engr., Univ. Mo., Columbia, MO 65211
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Abstract

Chlorsulfuron or metsulfuron applied POST at 10 g ai ha–1 at the four-leaf stage prevented yellow foxtail from forming seed, whereas seed production per pot was 53 to 77% of untreated checks following POST tribenuron or CGA-131036 treatments in greenhouse experiments. Chlorsulfuron applied POST at the two- and four-leaf stage severely reduced total seed production of yellow foxtail primarily by increasing plant mortality, rather than only reducing seed production per plant. Chlorsulfuron at 10 g ha–1 applied at the six- and eight-leaf stages decreased total seed production less than at the two earlier stages, by reducing both plant mortality and seed production per surviving plant. Yellow foxtail was much more susceptible than green foxtail to either chlorsulfuron or metsulfuron.

Keywords

CGA-131036, N-(6-methoxy-4-methyl-1,3,5-triazin-2-yl-amino-carbonyl)-2-(2-chloroethoxy)-benzenesulfonamidechlorsulfuron, 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamidemetsulfuron, 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoic acidtribenuron, 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)methylamino]carbonyl]amino]sulfonyl]benzoic acidgreen foxtail, Setaria viridis (L.) Beauv. ♯ SETVIyellow foxtail, Setaria glauca (L.) Beauv. ♯ SETLUCGA-131036chlorsulfuronmetsulfurontribenuronSetaria glaucaSetaria viridisSETLUSETVI
Type
Research
Information
Weed Technology , Volume 6 , Issue 2 , June 1992 , pp. 284 - 290
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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