Hi, All:
We are soliciting information for a report on the benefits of MSMA. The report is due to the US EPA, in final form, by Dec. 31. Currently, only use of existing stocks is allowed in Florida, I believe, and use on other US golf courses will be cancelled after 2013.
MSMA is an organoarsenical. Unlike inorganic arsenic, it is not carcinogenic, and it does not have high acute toxicity. EPA is concerned that very small amounts of it may convert to inorganic arsenic in the environment and migrate to water supplies.
However, the inorganic arsenic carcinogenicity issue is scheduled to be reexamined by the EPA's Scientific Advisory Panel in June. Following this examination, and depending on the benefits analysis, the registrations of MSMA's turf uses may be extended indefinitely.
1. Can any of you provide specific information about the lack of alternatives? For example, 'I only achieved 20% control of [dallisgrass, field paspalum, etc.] with a mix of herbicides X and Y, but I achieved 90% control with MSMA, which was cheaper by a factor of 2 on a per-acre basis.'
2. Can any of you provide specific information on the increase of herbicide resistance in areas where MSMA use has been restricted?
3. In addition to sending this info to us and/or posting this on the forum, please consider sending a letter directly to the EPA, as follows: Tom Myers, MSMA Product Manager,
myers.tom@epa.gov. Please cc us if you do so, at
ets@ets-md.com.
Thank you for your time.
stuart cohen
Stuart Z. Cohen, Ph.D., CGWP
President
Environmental & Turf Services, Inc.
11141 Georgia Ave. Suite 208
Wheaton, MD 20902
301-933-4700
fax 301-933-4701
ets@ets-md.comwww.environmentalandturf.com