| 1. Problem Algae | 2. Submersed Weeds | 3. Free Floating Weeds | 4. Rooted Floating Weeds | 5. Emergent Weeds |
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WEED INFO - PLANKTONIC ALGAE
Ecological Importance
Planktonic algae are the foundation of the aquatic food chain in all ponds, lakes and rivers. The density and diversity of the planktonic algae community in a waterbody determines how many and what size of fish can be supported. Algal abundance is determined by water fertility with higher levels of phosphorus and nitrogen resulting in increased abundance.
Problems/Description: Nusiance planktonic algae blooms almost always occur in response to high levels of nutrients. The ratio of nitrogen to phosphorus determines whether the planktonic community will be dominated by green algae that are readily eaten by microscopic animals or by blue-green algae that offer less value to the food chain. Low ratios of nitrogen to phosphorus favor blue-green algae rather than the more edible forms of green algae. |
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In rare instances, nusiance pre-dawn oxygen levels can be reduced to lethal levels for aquatic animal life when a plaktonic algae bloom is underway. Toxic blue green algae can cause severe health issues to humans and pets when large blooms are present or have recently died off. For more information about blue green algae visit the Wisconsin Department of Health website (Exit Site). To report an illness after being exposed to a blue green alge bloom click here (Exit Site). Common Application Questions |
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Q. When is the best time to treat? A. Treat when early signs of algae appear if possible. You can generally use lower label dose rates when algae mass is less. Q. How do I actually apply the product(s)? |
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A. You can easily apply Cutrine Plus liquid with a handheld pump-up or backpack sprayer. Apply Cutrine Plus as evenly as possible over the treatment area. Contact as much surface algae mats as possible. Subsurface algae will be controlled as Cutrine Plus moves throughout the water column or Cutrine granular can also be applied by hand scoop or hand spreader. Q. How often do I need to treat ? A. Several total or spot treatments may be required to maintain control for the season. Good results should be anticipated. Q. How long before I see results? A. Some algae types will succumb within a few days others may take up to twelve days. Heavy growth may require a follow up (about a week later) treatment. Treating before dense matting occurs will be more cost effective yielding longer terms results.
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