In the summer of 2009 the Lake Fairlee Association first seriously considered the use of an herbicide to control our milfoil. To help us decide how best to care for the lake we collected the best information we could find about what we called “the chemical alternative.” Links to various sources are scattered through this blog, and appear in numerous posts. This page is an attempt to collect these links in one place to make it easier for you, the reader, to browse among what we have found.
- Purdue University video – a 30 minute presentation entitled Why Aquatic Herbicides Affect Aquatic Plants and Not You! This is an excellent explanation of the science behind aquatic herbicides. It provides definitions of many terms used. We strongly recommend that you view this if you are interested in the issue.
- Lake Morey’s 2009 application for herbicide application – 34 pages but there is LOTS contained here, particularly information about how Vermont regulates the treatment of lakes with chemicals. (pdf file. Acrobat reader required)
- Triclopyr Questions and Answers from the State of Washington – a useful set of ‘Frequently Asked Questions,’ with lengthy answers. (pdf file. Acrobat reader required)
- A Pesticide Information Profile from EXTOXNET, A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Oregon State University, the University of Idaho, and the University of California at Davis and the Institute for Environmental Toxicology, Michigan State University. Revised 1996
- A General Fact Sheet from National Pesticide Information Center, a cooperative agreement between Oregon State University and the U.S. Environmental Protection Agency, with source citations. (2002) (pdf file. Acrobat reader required)
- The Northwest Coalition for Alternatives to Pesticides includes an Herbicide Factsheet on triclopyr. Written in 2000. NCAP is an organization dedicated to reducing pesticide use, and “keeping [us] informed about pesticide hazards . . . .” Its perspective is strongly anti-chemical. (pdf file. Acrobat reader required)
We have found the first three references to be the most useful, in roughly that order. If you know of other resources that we should be aware of please let us know.
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More Sources — updated October 1st, 2009
Thanks to our readers for suggesting additional resources. Here are two more that might be useful.
- Here is a Pesticide Information Profile on triclopyr, from EXTONET, described as “A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Michigan State University, Oregon State University, and University of California at Davis. Major support and funding was provided by the USDA/Extension Service/National Agricultural Pesticide Impact Assessment Program.” Its downside is that it was revised sixteen years ago, in 1993. It provides a concise summary of the research done at that time.
- The Nature Conservancy maintains a far reaching catalog of invasive plants, insects, pathogens, and other animals at invasive.org. There you can find a Weed Control Methods Handbook, containing this section on tridclopyr (eight very good pages). (pdf file. Acrobat reader required)