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The Use of Controlled-Release Fluridone Fibers for Control of Hydrilla (Hydrilla verticillata)

Published online by Cambridge University Press:  12 June 2017

Thai K. Van
Affiliation:
Aquatic Plant Manage. Lab., Agric. Res. Ser., U.S. Dep. Agric., Fort Lauderdale, FL 33314
Kerry K. Steward
Affiliation:
Aquatic Plant Manage. Lab., Agric. Res. Ser., U.S. Dep. Agric., Fort Lauderdale, FL 33314

Abstract

A fiber system for controlled delivery of fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenyl]-4(1H)-pyridinone} was evaluated for its potential use in the management of the submersed aquatic weed hydrilla [Hydrilla verticillata (L.f.) Royle # HYLLI] in slow-moving water. The release of fluridone from the fibers was first order and could be extended over several days simply by using fibers of larger diameters. Fibers of 0.8- and 1.2-mm diam released fluridone over a period of 40 and 50 days, respectively. Both effectively controlled hydrilla at a rate of 2.2 kg ai/ha in a 4-month study in replicated pools with water flow adjusted to provide one volume change every 24 h. Under the same conditions, the conventional liquid formulation was ineffective and a pellet formulation provided only marginal control.

Type
Weed Control and Herbicide Technology
Copyright
Copyright © 1986 by the Weed Science Society of America 

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