May 4th through May 6th Treatment Areas
Shaded Areas equal approximately 105.54 surface acres
Bay 11 (Aqua Area - West) = 26.77 surface acres - Contact treated for Milfoil (Myriophyllum sp)
Bays 9/10 (South West & North East of the Power Peninsula) also contact treated for Milfoil
(scroll down to see "Treatment Comments")
Treatment Comments
May 4th Winds 7-12 MPH from the West
May 5th Winds 7-14 mph from the South/South West
May 6th Winds 7-14 mph from West - North West
All treatments consisted of a tank mix of Reward/Aquathol K/Komeen combined with an aquatic polymer (Polyan) to aid in sinking and drift control.
Treatment was applied to areas of the lake in an order corresponding to wind direction and velocity for optimal treatment effectiveness.
Curlyleaf pondweed (CLP) growth has expanded in the lake since 2009. Part of the reason could be due to the fact that the 2009 treatment
for CLP was applied after the turion (seed) production, allowing the CLP to expand.
Approximately 98% of the CLP treated this season (2010) was treated before seed production occurred.
This early treatment may significantly reduce the 2011 CLP population in Lake Mohawk.
Note: The 2006 Fluridone treatment reduced CLP populations for 1-2 years (2007-2008) following treatment
Watermilfoil (Myriophyllum sp.) has expanded in the lake primarily in Bays 9/10 and 11.
The source of the significant Watermilfoil fragments that were observed in April/May at other locations such as the marina,
northern portions of the lake, as well as in various bays were predominantly from bays 9/10 and 11.
One way Watermilfoil reproduces is by a process called "vegetative reproduction".
During this growth phase of the plant, the plant becomes easily fragmented by wind or wave action.
Because it is very important to distinguish between our native species of Watermilfoil
and the ecologically damaging species of exotic Watermilfoil (Myriophyllum spicatum),
samples of the plant fragments were sent to a laboratory (in Michigan) for DNA analysis.
Only through DNA analysis can we be absolutely sure what species of Myriophyllum we have.
Note: It is possible to have "hybrids" of the two species.
Future treatment programs for Watermilfoil can be custom designed depending on "species" (native or exotic or hybrid)
Future control methods will be presented once we receive the DNA analysis