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Alyssa Wethington

Frogbit Monitoring and Treatment

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Hello all. I'm the new coordinator for the Mid-Michigan CISMA. We are currently in the process of applying for the USFS GLRI grant. We'd potentially like to use the funds to take aim at European frogbit, since it was recently found in our area for the first time and seems like a good candidate for early response and control. 

I wanted to solicit some advise on monitoring and treatment for this species, as well as other aquatic invasives. I'm essentially brand new to control of fully aquatic/floating plants such as milfoil and frogbit, most of my experience being with terrestrial and emergent vegetation such as buckthorn and cattails. Any preferred herbicides out there? I've almost exclusively used glyphosate, imazapyr, and triclopyr in aquatic environments. Monitoring methods that have worked out well? Has anyone had success with mechanical control of this species?

Any advice or relevant experiences would be greatly appreciated. Thanks in advance! 

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Hi Alyssa! 

The Exotic Aquatic Plant Watch offered through the MiCorps Cooperative Lakes Monitoring Program is one option for initiating monitoring in your service area (I know we've had a little email correspondence about this already).  We provide a monitoring and reporting protocol, training in species ID and survey methods, and season-long support to participants. There's a small per-lake enrollment fee (I expect it will be $30). Also, starting in 2021, we will no longer require enrolled lakes to also enroll in the Secchi disk transparency monitoring program, which requires biweekly lake visits all summer long - this has been a barrier for CISMA participation in the past.  

Others could talk more about control than I could, but I know hand-pulling is commonly used since EFB is not rooted. 

-Jo

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