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Contact US Operations Dept. Lakes Dept. NEWS Stormwater (MS4)

Lakes of the Four Seasons

Crown Point, Indiana

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Chemical & Aquatic Applications

Treatment of a lake to reduce excess plant growth.

 
Aquatic plants and algae blooms are the result of excess nutrients in the water that have washed off the landscape.  Just a little nitrogen in our phosphate over-loaded lakes can cause enormous growth.  The sources of these excess nutrients include over-fertilization of lawns and turfgrass, agricultural run-off, and animal waste.  The Lakes Department utilizes multiple treatment products to control the growth of algae and invasive plants in the lakes as well as on land.  

The following list includes brief descriptions of the products and their uses here in the Lakes and Operations Departments. 

For information regarding treatments on the golf course, contact Doug Weiss (219) 988-3104 or dougw@netnitco.net

 

Herbicide treatment for invasive species.

AQUATHOL K aquatic herbicide
active ingredient:  dipotassium salt of endothall at 40.3%
 
  This contact herbicide is a water-soluble salt and kills plants through absorption, but generally leaves the roots intact.  As a result, it needed to be reapplied annually.  It is short-acting and successful for spot treatments.     MSDS Data Sheet

AVAST! aquatic herbicide
active ingredient:  Fluridone family: 1-methyl-3-phenyl-5-[3-(trifluoromethyl)phenyl]-4(1H)-pyridinone
 

  This chemical herbicide inhibits the formation of carotene which prevents chlorophyll from functioning properly and causes it to degrade in sunlight.  This product is low acting and it may be 6 to 12 weeks before the plants die and fall to the sediment.   MSDS Data Sheet
AB Clearigate herbicide
active ingredient:  elemental copper at 3.825%
 
  This herbicide is a chelated copper formulation and works through contact absorption. There are some risks to copper such as accumulation in the sediment that have resulted in some states like Washington, to ban the use of copper treatments. 
Click here to read the Ecological Risk Assessment.
 
  Label
MSDS Data Sheet
CUTRINE-ULTRA algaecide/herbicide
active ingredient: elemental copper at 9.0%
 
  This herbicide is a chelated copper formulation and works through contact absorption.  There are some risks to copper such as accumulation in the sediment that have resulted in some states like Washington, to ban the use of copper treatments. 
Click here to read the Ecological Risk Assessment.
 
  Label
MSDS Data Sheet
HABITAT herbicide
active ingredient:  imazapyr:  Imidazolinone family: 2-[4,5-dihydro-4-(1-methylethyl0-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acid, salt with 2-propanamine (1:1)
  This herbicide inhibits a plant-specific enzyme which in turn causes the plant to stop growing and dye as it exhausts its energy reserves.  This herbicide is used in the lakes to combat aquatic plants as well as along waterways and on shorelines.   Label
MSDS Data Sheet
Hydrothol 191 algaecide/herbicide
active ingredient: Mono (N,N-dimethylalkylamine) salt of endothall at 53.0%
 
  This compound is a water-soluble, rapid acting non-selective contact herbicide/algaecide.  It does not accumulate in the environment and rapidly breaks down.   MSDS Data Sheet
Copper Sulfate fine crystals
active ingredient: Copper Sulfate Pentahydrate at 99.0%
 
  This is another copper product.   MSDS Data Sheet
PRENFISH TOXICANT
active ingredient:  rotenone at 5%
 
  This chemical is designed to kill fish.  It was used in 2009 to remove fish from Lake on the Green in preparation for restocking in 2010.   MSDS Data Sheet
REWARD herbicide
active ingredient:  Diquat dibromide;  6,7-dihydrodipyrido (1,2-a:2',1'-c) pyrazinediium dibromide
 
  This is a fast-acting, non-selective contact herbicide which destroys the vegetative part of the plant but does not kill the roots. Its typical use is for short term, seasonal control of a variety of submersed aquatic plants.   Label
MSDS Data Sheet
SONAR A.S. herbicide
active ingredient:  Fluridone: 1-methyl-3phenyl-5-(3-(trifluoro-methyl)phenyl)-4(1H)-pyridinone
 
  This is a slow-acting systemic herbicide that provides good control of submersed plants where there is little water movement and an extended time for the treatment. It is best used to treat a whole-lake or isolated bay.   Label
MSDS Data Sheet
TOUCHDOWN PRO herbicide
active ingredient:  Glyphosate: N-(phosphonomethyl) glycine at 28.3%
  This herbicide is systemic, broad spectrum and is used to control floating-leaved plants like water lilies and shoreline plants like purple loosestrife.  It does not work on underwater plants.   Label
MSDS Data Sheet
   

Algae bloom on lake.