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Journal of Aquatic Plant Management The Aquatic Plant Management Society
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Volume |
41, 2003 |
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Issue |
1 |
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Page |
25 |
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Title |
Efficacy and Residue Comparisons between Two Slow-release Formulations of Fluridone |
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Author(s) |
Tyler J. Koschnick, W.T. Haller, V.V. Vandiver, and U. Santra |
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Keywords |
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Abstract |
Residue profiles and efficacy of Avast and Sonar, two slow release pellet formulations of fluridone {1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenly]-4(1H)-pyridinone}, were compared in outdoor tanks. Hydrilla (Hydrilla verticillata (L.f.) Royle) and southern naiad (Najas guadalupensis (Sprengel) Magnus) were treated with a split application of 6, 12, 18 and 24 ?g/l a.i. fluridone and the concentrations of both formulations compared over a 134-day period. Both pellet formulations exhibited very similar residues over time for each respective treatment, resulted in peak concentrations of fluridone 40 to 50 days after application, and effectively and similarly controlled southern naiad and hydrilla at all rates tested by 92 days after initial application. |