2007-01-12_REVISION - M2006018 - Laserfiche WebLink

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All of these species are adapted to disturbed conditions such as those that occur on mining sites or agricultural lands. All of these species were introduced into the region at various times beginning in the late 1800's and have expanded into a variety of habitats. At the North Bank site, the primary species of concern are tamarisk, russian olive, canada thistle, knapweed, and field bindweed. Weed Control Methods Monitoring/Evaluating/Reporting Monitoring of weed populations is an integral part of the weed control program. This work will consist of examining all parts of the permit azea and identifying azeas where weed control is needed. This information will be used to develop an annual weed control plan that will describe what types of control need to be implemented, where different types of control will be implemented, when different control measures will be accomplished, and how the program will be conducted. Decisions on the annual program (based on site reconnaissance) will be made in the late spring, in order to make sure that weed control plans can be developed. Additional site visits during the yeaz may be necessary to evaluate the success of the control measures and to prepare recommendations for any late season weed control that may be necessary. After each year of treatment, the success of the various programs will be evaluated. This process will consist of examining the treatment azeas and documenting the remaining weeds in the azeas of treatment, evaluating the treatment success, and modifying any methods that aze not demonstrating adequate results. Treatment Methods Mowing, for species like canada thistle, can be helpful in reducing viability during the growing season, but it is not an effective approach for reducing abundance. Mowing must be followed-up immediately with an herbicide application to ensure a reduction in population. For species like field bindweed and knapweeds, however, herbicide application is the most effective means of control, although mowing prior to flowering combined with herbicide application can be successful. See Table 2 for a detailed description of the treatment methods. __ . Russian olive and tamazisk are located throughout the property and are especially abundant along water banks and low lying areas. The russian olive will be controlled through the use of Garlon and Pathfinder, and the tamarisk will be controlled through the use of Arsenal and Habitat. It should be noted that Habitat will be applied in areas where spray will come in contact with water. This herbicide is approved for use in and around standing and flowing water. Tamazisk treatment will be completed between the months of June to September, as the herbicides require foliaz applications and are therefore only effective while the plant is still green. Future applications, if necessary, will occur during the late summer and/or eazly fall. See Table 3 for a detailed description of the treatment method.