ABSTRACT

Grasslands are large land areas covered by grasses utilized primarily for livestock grazing.However, one of the greatest threats to the grassland communities is the introduction of invasive weeds. Invasive weed species are non-native plants that have no natural enemies to control their spread. Since there are many kinds of invasive weeds with different life cycles, a single control method is not effective. In addition, controlling weeds with one or two methods provides the weeds a chance to adapt to those practices. Therefore, integrated weed management on grassland is needed and should involve the use of various control techniques in a well-planned program. In practical terms, it means developing a weed management program using a combination of preventive, cultural, mechanical, and chemical practices. It does not mean abandoning chemical weed control, but relying on it less. Two case studies outlining integrated management of eastern redcedar and downy brome were presented.