Common Reed – Phragmites australis Conservation Practice Job Sheet NH-595 Common Reed Phragmites is widely distributed across the world but, the origin of the species is unclear. When additional herbicide treatments will be necessary, a cover crop could be considered for sensitive sites if soils are exposed. Herbicide products containing glyphosate and imazapyr labeled for aquatic site use, alone, or in combination, have been effective. Purple Loosestrife Lythrum salicaria 1 pint/acre applied to actively growing foliage. Imazapyr is the active ingredient utilized in the formulation of Habitat which is also a broad spectrum herbicide effective in controlling Phragmites. These herbicides are intended for broadleaf vegetation and are not species-specific. Imazapyr is used to control the invasive plants common reed (Phragmites australis), purple loosestrife (Lythrum salicaria) and Japanese knotweed (Polygonum cuspidatum). No significant differences in non‐Phragmites plant recolonization were observed between herbicide treatments over the two‐year time course. "�J8��4#w1c>��( `
The price of imazapyr (Arsenal or Habitat) chemical used to treat phragmites has come down since the 2009 application so we were able to get a bid of $200 per sprayed acre for application and chemical from Skycopters (all locations will be measured by GPS in the helicopter for accuracy of sprayed acres). ex Steud. %PDF-1.5
Imazapyr was registered with the EPA for aquatic use in 2003. Volume 16, Issue 2. Check to be sure a specific use pattern is approved in your area before use. If Phragmites is growing in a wetland area, the aquatic formulations that contain 53.8% glyphosate must be used. Its inflorescence is usually sparser than non-native Phragmites, as are most patches where it grows. In 2012, Arsenal ® Herbicide Applicators Concentrate received registration for all terrestrial industrial and aquatic uses. Most current product labels are available by visiting the product manufacturers website or at https://www.cdms.net, Active Ingredient: Isopropylamine Salt of Imazapyr 53.1%, Active Ingredient: Ispropylamine salt of Imazapyr 27.77%. 1.33 oz Imazapyr/gallon of water. Imazapyr and Glyphosate To give some background, phragmites management proceeds most commonly with a herbicide application. You can also use a non-ionic surfactant at … If applied to mature plants, a higher concentration of herbicide and a longer contact time will be required. June 2008. Similar species: Native Phragmites (Phragmites australis ssp. Treatment Herbicide Quick Guide for more information. It is important to note that repeated use of herbicides with the same mode of action can lead to herbicide-resistant plants, even in aquatic plants. Imazapyr 4 SL works by being applied directly onto targeted plants, then soaks into the foliage to stop plant growth. Formulations that can be used on aquatic vegetation include Habitat™, Ecomazapyr 2sl™, Imazapyr 2sl™, and Polaris AC. In order to prevent herbicide resistance, avoid using the same type of herbicides year after year, and when possible, use non-herbicide methods of control instead. A 1.5 percent solution can be achieved by mixing two ounces of herbicide in one gallon of water. americanus) has smooth, flexible stems, often with shiny, round, black spots (a fungus). A product called Habitat®is one formulation of this herbicide that is approved for use in wetlands to control Phragmites. Herbicide products containing glyphosate and imazapyr labeled for aquatic site use, alone, or in combination, have been effective. However, managers must note that adjacent nontarget plant species may be negatively affected by earlier treatments. •For small areas (using low volume application methods), application rates are calculated as percent solution. • Imazapyr is a slow-acting inhibitor (several weeks) and generally is most effective ... Common Reed Phragmites australis (Cav.) Imazapyr (alone or with Glyphosate) is quite effective on Phragmites and Typha as well as Phalaris, and can be used to treat all of them simultaneously. All herbicides must include a non-ionic surfactant which allows the herbicides to adhere to the plants leaves, stalks and rhizomes for effective control. 2) Imazapyr (Licensed Use Only) Imazapyr has greater success with killing off phragmites, but persists in the soil and as such is prone to killing off native plants in the area as well. The cosmopolitan common reed (Phragmites australis) has been expanding into previously unoccupied wetland habitats throughout North America. More resistant weeds have developed to the ALS inhibitor herbicides than to other herbicide types, and so this mechanism of action may be more susceptible to developing resistance. rates will control phragmites in the north; higher rates are needed in the south. Revegetation should not occur until imazapyr residues have degraded from the soil. Imazapyr is absorbed by both foliage and roots and kills plants by disrupting protein synthesis. Check to be sure a specific use pattern is approved in your area before use. Nufarm Polaris provides a multi-purpose label that includes vegetation management, aquatic and railroad applications. endstream
Arsenal AC Applicator's Concentrate Herbicide, when it comes to controlling unwanted brush, traditional mechanical methods don't really cut it. Imazapyr 4 SL is a non-selective herbicide used to bare ground treatments, forestry preparation and aquatic sites. Imazapyr is a non-selective herbicide used for the control of a broad range of weeds includingterrestrial annual and perennial grasses and broadleaved herbs,woody species, and riparian and emergent aquatic species. There are two chemical treatment options available to manage Phragmites australis subsp. These results suggest that imazapyr is superior in reducing Phragmites RIV, and that earlier applications of herbicides may be more effective on Phragmites. 38 0 obj
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~-^�� The Imazapyr management action involves the application of any chemical product approved for aquatic use that contains imazapyr as the active ingredient . Professionals consulted for this document recommend using a glyphosate-based or imazapyr-based herbicide (or a mix). When using herbicides, phragmites should be treated in early to late summer (June – September) using imazapyr, or late summer (August – September) using either glyphosate or aglyphosate / imazapyr mixture, to achieve effectivecontrol. Imazapyr is used to control the invasive plants common reed (Phragmites australis), purple loosestrife (Lythrum salicaria) and Japanese knotweed (Polygonum cuspidatum). ! Often, mowing and/or burning are secondary treatments used in combination with herbicide application. Australis that show the best promise for control. When using herbicides, phragmites should be treated in that imazapyr used alone or in combination with glyphosate can control phragmites for a longer period of time. Check product labeling or your local state agency for more information. If applied to mature plants, a higher concentration of herbicide and a longer contact time will be required. h�bbd``b`�$�� �:H0�� ��Rr
�2 �)�!$�Z��[(��wc`bdX2������ �` If you spray 2 feet wide, a sprayer full will treat 2,000 feet of fence line. Nufarm Polaris is a liquid post-emergent herbicide that contains Imazapyr for effective management of grasses and broadleaf weeds, undesirable emergent and floating aquatic vegetation, and many brush and vine species in a variety of settings. In Wisconsin, imazapyr is used to control the invasive plants common reed (Phragmites australis), purple loosestrife (Lythrum salicaria) and Japanese knotweed (Polygonum cuspidatum).