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Absorption and Translocation of 14C-Imazapyr and 14C-Glyphosate in Alligatorweed Alternanthera philoxeroides

Published online by Cambridge University Press:  12 June 2017

T. A. Tucker
Affiliation:
Crop Sci. Dep., North Carolina State Univ., Raleigh, NC 276957620
K. A. Langeland
Affiliation:
Agron. Dep. Univ. Florida, Gainesville, FL 23605
F. T. Corbin
Affiliation:
Crop Sci. Dep., North Carolina State Univ., Raleigh, NC 27695-7620

Abstract

The absorption and translocation of the isopropylamine salts of 14C-glyphosate and 14C-imazapyr were compared in established terrestrial alligatorweed. Results indicated that more than twice as much imazapyr as glyphosate was absorbed by treated leaves of alligatorweed. In addition, more imazapyr was translocated to the underground storage tissues in alligatorweed than was glyphosate. This difference in translocation to roots and subterranean storage tissues is proposed as a mechanism for tolerance of alligatorweed to glyphosate and susceptibility to imazapyr.

Type
Research
Copyright
Copyright © 1994 by the Weed Science Society of America 

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