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• Monitoring of weed control efforts on an annual basis as described in Identification and <br />Mapping below. <br />• Assess the need for any supplemental management measures. (ie: fertilization, reseeding, weed <br />control, protection from wildlife, etc.) <br />Identification and Mapping - PSCM will utilize a range of resources to identify and map any <br />noxious weed infestations within the PSCM permit area. The Environmental Staff will be trained <br />in noxious weed identification and, as a matter of practice, note any noxious weed occurrences <br />observed any time they are in the field. In addition, Environmental Staff, assisted by trained <br />student and summer interns, will conduct spring and fall Environmental Management surveys of <br />active areas, specifically to identify any new noxious weed occurrences, assess the effectiveness of <br />weed management activities, and note any environmental concerns that may require attention. <br />PSCM maintains a working weed program map and records both observed noxious weed <br />occurrences (from all sources, by weed species, location, and extent of infestation) and treatment <br />activities. <br />Management Planning and Scheduling - Effective management and planning are key elements in <br />assuring the effectiveness of PSCM's weed program. Any new information collected through the <br />ongoing noxious weed identification and mapping efforts, along with treatment information from <br />prior years is reviewed and evaluated. Based on this information, treatment strategies and <br />schedules are developed during the early spring for the annual weed management program using <br />the following steps: <br />• For mapped weed infestations, treatment method is determined based on the weed species <br />present using recommendations provided by the CSU Extension Service. Selection of <br />treatment method(s) takes into consideration proximity to flowing water or water bodies, <br />croplands, any livestock use, and historical response of identified weed species to prior <br />treatment(s), based on review of control effectiveness. Treatment methods may include <br />mechanical controls (tillage, mowing, burning, cutting/pulling), chemical controls (selective <br />herbicides), biological controls (weed - specific insects or pathogens), or combinations of these <br />methods. In general, treatment method(s) will be selected to achieve the most effective control <br />with the resources available. As an example, where multiple weed species are present, the most <br />effective overall control(s) will be applied, although the method(s) may not be optimal for each <br />individual species. <br />• Scheduling of weed management treatments will also be based on the CSU Extension Service <br />recommendations for specific weed species. For most species, control effectiveness can be <br />significant enhanced by scheduling treatment at specific stages of vegetative growth (typically <br />spring and/or fall). To the extent possible, based on staff and contractor availability, treatment <br />will be scheduled to optimize effectiveness. <br />• Priority and responsibilities for weed control are determined based on weed species present and <br />the location and extent of weed infestations. Certain weed species are extremely aggressive, <br />and first priority will be given to their control to prevent establishment and spread. Previously <br />treated areas are second in priority, in order to maximize control effectiveness. Third in priority <br />5 01/2011 <br />