Influence of Dilute Acetic Acid Treatments on Survival of Monoecious Hydrilla Tubers in the Oregon House Canal, California

Spencer, David F. and Ksander, Gregory G. (1999) Influence of Dilute Acetic Acid Treatments on Survival of Monoecious Hydrilla Tubers in the Oregon House Canal, California. Journal of Aquatic Plant Management, 37, pp. 67-71.

[img]
Preview
PDF (The document's language is English .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (90Kb) | Preview
Official URL: http://www.apms.org/japm/vol37/v37p67.pdf

Abstract

Hydrilla (Hydrilla verticillata (L.f.)Royle), a serious aquatic weed, reproduces through formation of underground tubers. To date, attacking this life-cycle stage has been problematic. The purpose of this study was to measure the impact of exposure to dilute acetic acid on monoecious hydrilla tubers under field conditions. In this field experiment, treatments were acetic acid concentration (0, 2.5, or 5%) and sediment condition (perforated or not perforated). Each of 60, 1x1 m plots (in the Oregon House Canal) were randomly assigned to one treatment. Two weeks after treatment, we collected three samples from each plot. One was washed over 2 mm wire mesh screens to separate tubers from sediment. Relative electrolyte leakage was measured for one tuber from each plot. Five additional tubers from each plot were placed in a growth chamber and sprouting monitored for four weeks. A second sample from each plot was placed in a plastic tub and placed in an outdoor tank, filled with water. These samples were monitored for tuber sprouting. Relative electrolyte leakage increased significantly for tubers exposed to 2.5% or 5% acetic acid. Effects on tubers in perforated sediment were reduced. Exposure to acetic acid inhibited tuber sprouting by 80 to 100%, in both chamber and outdoor tests. These results confirm findings from earlier laboratory/greenhouse experiments, and suggest that this approach may be useful in the management of hydrilla tuber banks in habitats where the water level can be lowered to expose the sediments.

Item Type: Article
Title: Influence of Dilute Acetic Acid Treatments on Survival of Monoecious Hydrilla Tubers in the Oregon House Canal, California
Personal Creator/Author:
CreatorsEmail
Spencer, David F.
Ksander, Gregory G.
Refereed: Yes
Journal or Publication Title: Journal of Aquatic Plant Management
Volume: 37
Page Range: pp. 67-71
Date: 1999
Issuing Agency: Aquatic Plant Management Society, Inc.
Uncontrolled Keywords: Oregon House Canal, California; aquatic plant management; tuber bank; vinegar; Hydrilla verticillata; monoecious; acetic acid
Subjects: Biology
Environment
Item ID: 1770
Depositing User: Natalie Wiest
Date Deposited: 27 Nov 2008 15:53
Last Modified: 29 Sep 2011 20:05
URI: http://aquaticcommons.org/id/eprint/1770

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...