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The Effect of Piperonyl Butoxide and Adjuvants on Sulfonylurea Herbicide Activity

Published online by Cambridge University Press:  12 June 2017

Chae Soon Kwon  and
Donald Penner
Chae Soon Kwon
Affiliation:
Dep. of Crop and Soil Sci., Michigan State Univ., E. Lansing, MI 48824
Donald Penner
Affiliation:
Dep. of Crop and Soil Sci., Michigan State Univ., E. Lansing, MI 48824
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Abstract

Greenhouse studies showed that the mixed function oxidase inhibitor, piperonyl butoxide (PBO), tank-mixed with the sulfonylurea herbicides, nicosulfuron, primisulfuron, and thifensulfuron, in the absence of effective adjuvants enhanced herbicide activity on both broadleaf and grass weed species. Effective adjuvants for nicosulfuron were K-3000 for common lambsquarters, Sylgard® 309 Surfactant for velvetleaf, K-2000 for barnyardgrass, and K-2000, K-3000, and Scoil® methylated seed oil for giant foxtail control. K-3000 and Sylgard 309 enhanced velvetleaf control with primisulfuron and thifensulfuron. The 28% urea and ammonium nitrate (UAN) was more effective as an adjuvant with thifensulfuron for velvetleaf than for common lambsquarters control. The enhancement of sulfonylurea herbicide activity with PBO was most apparent when other adjuvants were least effective.

Keywords

Nicosulfuron, 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamideprimisulfuron, 2-[[[[[4,6-bis(difluoromethoxy)-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 acidpiperonyl butoxide (PBO), α-(2-(2-butoxyethoxy)ethoxy)-4,5-methyl enedioxy-2-propyltoluenebarnyardgrass, Echinochloa crus galli (L.) Beauv., #3 ECHCGcommon lambsquarters, Chenopodium album L., # CHEALgiant foxtail, Setaria faberi Herrm., # SETFAvelvetleaf, Abutilon theophrasti Medicus, # ABUTHChemproK-2000K-3000ScoilSylgard 30928% UANX-77
Type
Research
Information
Weed Technology , Volume 10 , Issue 1 , March 1996 , pp. 127 - 133
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

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