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• spreading roots and seedlings. <br />2) Herbicide applications should be continued on an annual basis for at least 3 to 5 years until control <br />reaches 90 percent or more to prevent the rapid reintestation of leafy spurge. <br />3) Annual monitoring and mapping of leafy spurge on the property during the early growth season should <br />be conducted to spot any new infestations and to determine the effectiveness of management strategies. <br />Any new infestation area should scheduled for herbicde application as soon as possible to improve the <br />effectiveness of herbicide application and to minimize the size of the area requiring treatment. <br />4) Extraction and exportation of rock products from infested areas, as well as equipment operation in <br />these areas, should be avoided to prevent importation of the weed into uninfested areas. Livestock on <br />the property should be managed to avoid the potential spread of leafy spurge seed by these animals. <br />Also, livestock grazing should be managed to increase the competitiveness of desirable plants. <br />5) Fremont County weed specialists and County Extension agents should be consulted to ensure the <br />effectiveness of the leafy spurge management plan. <br />• REFERENCES CITED <br />Lajeunesse, S., R. Sheley, R. Lym, D. Cooksey, C. Duncan, J. Lacey, N. Rees, and M. Ferrell. Leafy <br />spurge: biology, ecology and management. Montana State University Extension Service, <br />publication EB 134. July 1995. 25 pp. <br /> <br />4 <br />