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~''' ~ Eco- ~, LLC Noxious Weed /Vegetation Management Everist Materials -Love Pit, Vegetative Management Plan Prepazed By Eco-Rx, LLC Initial Findings: Everist Materials Love Pit site is mainly comprised of riparian willow complexes. In observations in the summer of 2005 numerous noxious weeds were identified which included canada thistle, musk thistle and false chamomile. At the initial size up the vast majority of weed species present aze wntained in and around the ponds and roadways. Proposed treatment methods: This plan proposes the treatment of noxious weeds with appropriate herbicides in the early summer (May to late June) followed by a Late summer treatment (August to early October). These herbicides include the use of aquatic approved 2,4-D and Gazlon 3a in irrigated or wetland azeas and the use of redeem R&P and escort in the upland sites. These combinations should give adequate annual control of the species targeted. The two treatments are designed to catch the plants at their most vulnerable stages. The early treatment (May to late June) is designed to kill musk thistle prior to seed production. Musk thistle is a biennial plant which starts from a seed in yeaz one of life and develops a rosette of leaves which helps produce a large tap root. The second year musk thistle uses the energy stored in the tap root to bolt, flower and set seed. Once seed set has occurred the plant dies. The seeds of musk thistle are known to survive in the soil for up to 20 years and remain viable. This fact makes control of this plant fairly difficult and the need for follow up treatments in the years to come will be needed. This early treatment will also tazget false chamomile before seed set. False chamomile is an annual which produces copious amounts of seed every year. This plant is susceptible to all the proposed herbicides listed above. The fall treatment will capitalize on and kill any newly germinated musk thistle or chamomile plants and take advantage of Canada thistles must vulnerable treatment time. Canada thistle is a creeping perennial which has an extensive root system. Studies have shown that a two foot tall Canada thistle plant has a root system which radiates out from the plant up to 12 feet away and the tap root can reach depths of up to 25 feet. Canada thistle treatment in the fall of the yeaz has been shown to be the most effective time to kill the plant. This is primarily due to the fact that the herbicide that is applied to the plant is readily translocated to the extensive root system due to the plants own translocation of sugars to the root to prepare for over-wintering. Canada thistle also produces root buds in the fall which will ultimately become next yeazs plants.