Lembi, C.A. and T. Chand, 1992. Response of Hydrilla and Eurasian Watermilfoil to Flurprimidol Concentrations and Exposure Times, Purdue University.

Reprinted with Permission from Journal of Aquatic Plant Management (1992) 30: 6-9

Response of Hydrilla and Eurasian Watermilfoil to Flurprimidol Concentrations and Exposure Times

Abstract
Hydrilla and Eurasian watermilfoil grown out-of-doors in 67-L barrels with bottom sediment were exposed to different concentrations and exposure times of the gibberellin synthesis inhibitor, flurprimidol ([a-(1-methylethyl)-a-(4-trifluoromethoxy) phenyll-5 pyrimidinemethanol). Two-hour exposures to the compound significantly reduced vertical main stem length at concentrations of 75 and 750 µg L^-1 for hydrilla and 200 µg L^-1 for Eurasian watermilfoil for at least 28 days post-treatment. Treated hydrilla plants produced more stolons per plant than un- treated plants resulting in a "rug-like" carpet on the bottom of the barrel. Based on our results, field studies on the reduction of vertical plant height by gibberellin synthesis inhibitors appear to be warranted.

Entire Paper
Contact: Carole Lembi, Purdue University, Department of Botany and Plant Pathology, 1155 Botany and Plant Pathology, West Lafayette, IN 47907-1155
Key Words: Eurasian_watermilfoil, Hydrilla, Basic_biology
Product Type: Research, Basic_biology
User Type: Resource Management