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Controlling Curly-Leaf Pondweed
Curly-lead pondweed is an invasive aquatic plant that has been found in 759 lakes in 70 of the 87 counties in the state of Minnesota. Curly-leaf is unique in that it begins growing in late fall and continues to grow under the thick ice. When spring arrives it is usually the first plant to appear after ice-out. Then when most native aquatic plants are growing, curly-leaf pondweed is dying back.

As the dying weeds decompose it contributes to increased phosphorous concentrations in the lakes. The excessive phosphorus provides necessary nutrients for algae to grow causing additional recreation and water-quality problems.

Mechanical harvesting (raking, cutting, or harvesting) is effective if performed in the spring – before Memorial Day. This process does need to be performed yearly however, but since curly-leaf can spread from just a small plant fragment; it is imperative that the harvesting method include collecting and disposing of the clippings.


 
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Watercraft Inspectors Protecting Against Aquatic Invasive Species - Lake goers can expect to see a larger presence of watercraft inspectors this summer. The Otter Tail County Board approved the hiring of 30 positions for watercraft inspectors for 2018. The Aquatic Invasive Species Task Force will be doing what they can to fill these positions and prevent the spread of invasive species in the county lakes and rivers.


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