Weed management is most successful when it involves an integrated approach using a variety of methods. The common methods used to manage weeds include prevention and cultural, mechanical, biological, and chemical means. Preventative methods are used to stop the spread of weeds. Preventing the introduction of weeds is usually easier than controlling them after establishment. Preventative practices include cleaning tillage and harvesting equipment of weed seeds and vegetative structures; planting certified, weed-free crop seed; and controlling weeds in barnyards, around structures, and along fencerows, roadways, and ditch banks. Weed control methods vary according to the growth habit of the weeds in questions, as well as the context. Intended for agronomists, weed scientists, crop advisors, environmentalists, students, and crop ecologists, this book provides a successful and environmentally sound perspective on weeds and their control.