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Resistance of Palmer Amaranth (Amaranthus palmeri) to the Dinitroaniline Herbicides

Published online by Cambridge University Press:  12 June 2017

Billy J. Gossett ,
Edward C. Murdock  and
Joe E. Toler
Billy J. Gossett
Affiliation:
Agron. Dep., Clemson Univ., Clemson, SC 29634-0359
Edward C. Murdock
Affiliation:
Agron. Dep., Clemson Univ., Clemson, SC 29634-0359
Joe E. Toler
Affiliation:
Clemson Univ., Clemson Univ., Clemson, SC 29634-0359
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Abstract

Trifluralin-resistant Palmer amaranth populations were confirmed at eight locations within two of the ten-county cotton growing region of South Carolina. Different levels of resistance to six dinitroaniline herbicides were observed, but no resistance was observed to herbicides from nine other chemical groups. Five to six times more trifluralin was required to control a resistant than a susceptible biotype under field conditions.

Keywords

trifluralin, 2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)benzenaminecotton, Gossypium hirsutum L.Palmer amaranth, Amaranthus palmeri S. Wats ♯ AMAPAWeed resistanceweed biotypestrifluralinAMAPA

Information

Type
Research
Information
Weed Technology , Volume 6 , Issue 3 , September 1992 , pp. 587 - 591
Copyright
Copyright © 1990 by the Weed Science Society of America 

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References

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