Carfentrazone-ethyl is used for the control of floating and emergent aquatic plants such as duckweeds (Lemna spp.), watermeals (Wolffia spp.), water lettuce (Pistia stratiotes), water hyacinth (Eichhornia crassipes), and salvinia (Salvinia spp.). Carfentrazone-ethyl can also be used to control submersed plants such as Eurasian watermilfoil (Myriophyllum spicatum). The herbicide controls plants through the process of membrane disruption which is initiated by the inhibition of the enzyme protoporphyrinogen oxidase, which interferes with the chlorophyll biosynthetic pathway.
Florpyrauxifen-benzyl is broken down quickly in the water by light (i.e., photolysis) and is also subject to microbial breakdown and hydrolysis. It has a half-life (the time it takes for half of the active ingredient to degrade) ranging from 1 Â 6 days. Shallow clear-water lakes will lead to faster degradation than turbid, shaded, or deep lakes.
Administrative code requires permits for most aquatic pesticide treatments but is focused on aquatic plants. Rotenone is a piscicide used to eliminate rough and other fish nuisance conditions usually associated with restoration projects and as such is regulated as an aquatic pesticide. The Department is the only applicant for all rotenone treatments in public waters. Occasionally, private parties involved in private pond reclamation use rotenone. This chapter is intended to provide guidance on how to legally comply with WI Administrative Code NR 107 Aquatic Plant Management (APM) for the use of rotenone in private ponds.
Diquat Chemical Fact Sheet, January 2018 EGAD # 3200-2018-18
Administrative code requires the permit applicant to post caution/warning signs following chemical treatments. This chapter is intended to provide guidance on how to legally comply with the caution/warning sign posting requirement for different types of pesticide treatment outlined in the WI Administrative Code NR 107 Aquatic Plant Management.
Administrative code requires public notification as part of the NR 107 application for some aquatic pesticide treatments. This chapter is intended to provide guidance on how to legally comply with the public notification requirement for different types of pesticide treatment outlined in the WI Administrative Code NR 107 Aquatic Plant Management.
The use of hydraulic conveyers/suction dredge hoses to convey diver pulled aquatic plants to a barge at the water surface or on shore is considered mechanical removal as it uses an external or auxiliary power source to aid in the control aquatic plants. The use of this technology requires an NR 109 permit. Mechanical removal of aquatic plants from a body of water 10 acres or less that is entirely confined on the property of one person with the permission of that property owner is allowed per NR 109.06(1).