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Title: Determination of Herbicide Residues in Edible Taro Parts and Wetland Flood Waters 
Author: DeFrank, Joseph; Easton-Smith, Virginia A.; Leong, Gladys
Date: 1990-01
Publisher: University of Hawaii
Citation: DeFrank J, Easton-Smith VA, Leong G. 1990. Determination of herbicide residues in edible taro parts and wetland flood waters. In: Hollyer JR, Sato DM, editors. Proceedings of Taking Taro into the 1990s: A Taro Conference. Taking Taro into the 1990s: A Taro Conference; 1989 Aug 17; Hilo, Hawaii. Honolulu (HI): University of Hawaii. p. 46-48.
Abstract: A preliminary experiment with seven preemergence herbicides identified oxyfluorfen as a promising herbicide for commercial taro (Colocasia esculenta) production in Hawaii. Oxyfluorfen was applied twice at 0.38, 0.56 and 1.11 kg/ha to taro grown under wetland flooded and upland conditions. No oxyfluorfen residues were found in plant tissues (limit of detection 0.02 ppm). Oxyfluorfen levels in water from treated lowland plots was determined. Trace levels present in flood waters immediately after treatment dissipated to undetectable levels (limit of detection, 0.001 ppm) within 24 hours.
Series/Report No.: Research Extension Series
Pages/Duration: 3 pages
ISSN: 0271-9916
Keywords: Colocasia esculenta, food contamination, herbicide residues, oxyfluorfen, taro, water pollution

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