07-20-2015 Planning Commission Packet

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� � CONTROL UF EXISTING REED CANARY GRASS Most of the wed�ds on the property {except that part of Wetland 1 designated as PFO1B) contain reed canary grass in varying degrees of abundance and density{Exhibit E). Reed canary �'ass fom�s dense and highly pr�ductive monocultures in a way similar to broad lcaf cattail and purple lo�sestrife. By producing these large monoculture areas, tbe biological diversity is then essentialty homogeaiziag to that of one habitat suvcture. Reed canary grass gows from seed, �em fragments, and rhizomes. Withi.n one growing season, the rhizomes in the soil produce a danse mass w•hich wi11 out compete the native plants already mobed in the sail. Recd canary grass is a facultative wetland species meaning that it can grow under a variety of h�-drologic canditions. The grass tends to be found in moist or wet soils and can tolerate water conditions ranging from high water le��eLs to drought like conditians. Reed canary grass is a persistent snd tenacious Eurasian plsnt species that has been planted tluoughout the U.S since the 1800's. At the time,the grass was known for its large forage yields and erosion control abilities but as time went an other characteristics of the plant were recognized. Some of thase characteristics include its prolific seed dispersal, robust vegetatzve growth, and dense network of underground rhizomes with thousands of dannant buds {Wisconsin Reed Canary Grrass Management Warking Group, 2009). Similar to buckthom, the seed bank can last for up to 6 yesrs meaning that follow up manageanent will need to take place fiallowing the eradication of the invasive plant spaci�s. Reed canary grass is one of the first wetland plants to emerge in the spring and therefare is cap�able of shading out other native plants that emerge later. To eliminate reed canary grass, it is necessary to replant immediately with plant species that can out compete azry residuel plants or� and retard erosian (Rhodes and Block,2002). A list of the seed mixture for wetlands is in Auachment C. The recommended way to eradicate the reed canary grass for this loc�t�ion is by using glyphosate. The best sequence for eradicating severe infestations of r�eed canary grsss is to apply the glyphosane in the fall followed by a prescribed bure during the winter or early spxing to burn off the dead thatch. Then spray again in the spring to kill the seedlings germinating from the seed- bavlc (Jacobson, 200b). Additional trea�nent Qpplications may be required to assure complete convoi and eradi�ation. The timing of these activities is exlremely important for this method work effectively. Aiiother control method is io mow the reed canary g�ass in Iate June and £ollow up with a late August or early September treatment with glyphosate by prnmoting active le;af growth. Also if a fall application of gtyphasate is chosen, then no mowing shauld be conducted after July 15. It is important that these time periods are followed for a successful eradication af the reed canary P�-Ss- Svoboda&colo�ical Resources 9 200&350 Stubbs Bay Rd Project Number:2014-037 p�o,�