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Interacting Effects of Imidazolinone Herbicide Mixtures on Translocation in Pitted Morningglory (Ipomoea lacunosa)

Published online by Cambridge University Press:  12 June 2017

David R. Shaw
Affiliation:
Dep. Plant Pathol. Weed Sci., Mississippi State Univ., Mississippi State, MS 39762
Dennis G. Riley
Affiliation:
Dep. Plant Pathol. Weed Sci., Mississippi State Univ., Mississippi State, MS 39762
Bradford W. Minton
Affiliation:
Dep. Plant Pathol. Weed Sci., Mississippi State Univ., Mississippi State, MS 39762

Abstract

Individual herbicides and all double combinations of imazaquin, imazethapyr, and imazapyr were applied alone and in combination to the foliage of pitted morningglory plants in order to evaluate potential influences on translocation. Unlabeled imazethapyr at 5.62 μg plant−1 stimulated basipetal translocation of both 14C-imazaquin and 14C–imazapyr. Unlabeled imazaquin at 7.49 μg plant−1 also increased basipetal translocation of 14C–imazethapyr but did not influence 14C–imazapyr translocation. No combination affected the amount of 14C herbicide remaining in treated leaves or moving into foliage above treated leaves. Unlabeled imazapyr at 0.11 μg plant−1 did not affect movement of either imazaquin or imazethapyr.

Type
Physiology, Chemistry, and Biochemistry
Copyright
Copyright © 1992 by the Weed Science Society of America 

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