General Information About Aquatic Weeds ( Publisher's URL )

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General Information About Aquatic Weeds
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Fact sheet
Vandiver, Vernon V. Jr.
University of Florida Cooperative Extension Service, Institute of Food and Agriculture Sciences, EDIS
Place of Publication:
Gainesville, Fla.
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Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Melanie Mercer.
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General Note:
"Revised: November 1997. Reviewed: May 2002"
General Note:
"SS AGR 124"

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University of Florida Institutional Repository
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University of Florida
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All rights reserved by the submitter.
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SS-AGR-124 General Information About Aquatic Weeds 1 Vernon V. Vandiver, Jr.2 1. This document is SS AGR 124, one of a series of the Department of Agronomy, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Revised: November 1997. Reviewed: May 2002. Please visit the EDIS Web site at 2. Vernon V. Vandiver, Jr., Associate Professor and Extension Aquatic Weeds Specialist, Fort Lauderdale Research and Education Center, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611. The Institute of Food and Agricultural Sciences is an equal opportunity/affirmative action employer authorized to provide research, educational information and other services only to individuals and institutions that function without regard to race, color, sex, age, handicap, or national origin. For information on obtaining other extension publications, contact your county Cooperative Extension Service office. Florida Cooperative Extension Service/Institute of Food and Agricultural Sciences/University of Florida/Christine Taylor Waddill, Dean. Aquatic weed growth of both native and exotic vegetation can severely decrease the agricultural, commercial, recreational, and aesthetic value of Florida's waters, one of our most valuable natural resources. In most situations, some degree of aquatic plant growth is desirable. Control measures are needed only when an overabundance of plant growth begins to limit the desired use of a body of water. Aquatic plants are generally grouped into one of the following habits: Submersed, with the vegetation growing below the surface of the water. Floating, with the vegetation growing on the surface of the water and not rooted in the soil. Emergent, with the vegetative growth rooted in the soil, with the plants extending above the surface of the water. Shoreline, with the vegetative growth mainly on the shore, with some plants at times extending into the body of water. When control measures are required, aquatic weed infestations are usually controlled by one or more of the following methods: chemical control programs using aquatic herbicides, mechanical removal of the aquatic weeds, biological control programs which utilize living organisms to reduce unwanted weed growth, water level alteration which can aid in controlling aquatic weeds under certain conditions. The most widely used method of controlling aquatic weed growth in Florida at present is through chemical control programs using herbicides. The information in this section is arranged to facilitate the proper use of aquatic herbicides, as the Federal Insecticide, Fungicide and Rodenticide Act, as amended, states that "It shall be unlawful for any person . to use any registered pesticide in a manner inconsistent with its labeling." A number of factors may affect the results of an aquatic weed control program. Some of these factors are: density of weed infestations, water quality, water flow, water temperature, time of day treatment is made, growing condition of target plant, time of year of treatment, method of herbicide application, weed species being controlled, soil type, soil moisture conditions, weather conditions before and after


General Information About Aquatic Weeds 2 treatment, and the particular combination of treatment methods used.