There are numerous aquatic herbicides that can be used to control Eurasion water milfoil. Like many weeds, Eurasian watermilfoil is a survivor. Due to the plant's ability to form dense growth, water use activities may become severely impaired. Below is the difference between Eurasian Milfoil and the less invasive Norther Milfoil. One tiny piece cut from the main plant can land on … It is capable of rapid dispersion, principally by fragmentation of plant parts. Weevils - a small herbivorous aquatic beetle 4. Milfoil stays submerged except for a stalk of tiny flowers, which can extend above the surface. Navigate is a very selective granular aquatic herbicide for control of Eurasian water milfoil. It reproduces both vegetatively and, less commonly, sexually (seeds). Eurasion milfoil can take over a lake in two years. This technique helps to control the weed's spread in some areas but rarely eliminates it because pieces can break off and re-establish, sometimes in areas the plant hadn’t infested previously. Our lake rakes, including our mechanical LAKEMAID®, are an excellent mechanical alternative to keep plants from ever starting to grow. Here's what the weevils look like: Chemical Control. Best methods for the control of Eurasian Milfoil, if your community is against the use of chemicals and or your lake is tied to the well system or is used for drinking water then use the following control methods. When using an aquatic herbicide, treat just a section of the water body every two weeks until the problem is eliminated. An option is to add a non-toxic aquatic dye to the infested water. © Copyright 2020 Hearst Communications, Inc. An aquatic herbicide typically is applied in spring or summer, depending on the climate and when the Eurasian watermilfoil begins a period of rapid growth. The invasive weed can be distinguished from native plants by its feathery leaves, which are 1 1/2 inches long and arranged around the stem in groups of four. The Minnesota Department of Natural Resources is slashing the money it gives to dozens of cities and lake groups to treat aquatic invasive species, including Eurasian milfoil, on … Group injects herbicide at Vancouver Lake to kill invasive milfoil. Eurasian milfoil also helps make lakes clearer by keeping sediment settled out and using up dissolved phosphorous that would otherwise become food for algae. Eurasian milfoil. Each fragment is capable of growing roots and developing into a new plant. Using this description and image will help you to identify whether Water Milfoil is growing in your p… A single piece of fragmented Eurasian milfoil can multiply into 250 million new plants in one year! Here are some tips for properly using an aquatic herbicide to control Eurasian water milfoil: 1. According to a report released from the MNDNR, Schmidt Lake in Hennepin County contains no Eurasian Water Milfoil. In some states, only state-licensed individuals can apply an aquatic herbicide. There are currently more than 300 herbicides registered with the EPA. Place aquatic mats or other barriers over isolated clumps of Eurasian watermilfoil. However, Eurasian watermilfoil and variable milfoil are not always found in the same lakes due to differing pH preferences, and control methods for the two species can vary. Read the label of an herbicide carefully before applying it, even if you've used the chemical previously. It foils propellers, ruins swimming holes and is thoroughly difficult to eradicate. In the fall of 2004, a survey conducted showed Eurasian Water Milfoil percent occurrence to be at 54%. When on the surface of the water, Water Milfoil forms tangled patches. These barriers often are used in swimming areas and around docks. 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