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Curlyleaf Pondweed Invading Iowa Lake
Invasive curlyleaf pondweed has been choking East Okoboji Lake, snarling boat propellers, burning up motors and shutting down swimming, tubing and other water sports in an area that depends on recreation.

The weed's invasion is driving heated debates about how to control it — from using mechanical removal to administering herbicides that raise concerns about drinking water safety.

An aquatic weed harvester has logged 300 hours this spring, chopping and pulling out about 450,000 pounds of weeds from East Okoboji Lake.  The plants are drying in a couple of remote spots, with the hopes that farmers might be able to use them for fertilizer.


 
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County Strengthens Fertilizer Ban to Prevent Future Algae Blooms - Commissioners passed a new fertilizer-control ordinance that requires buffer zones between applications and the lagoon, a prohibition on the use of phosphorus without a soil test, and a requirement that at least 50 percent of the all fertilizer used contain slow-release nitrogen.


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