Fundamentals of Weed Science, Fifth Edition, provides the latest information on this constantly advancing area of study. From the emergence and genetic foundation of weeds to the latest means of control and environmental impact, the book uses an ecological framework to explore the role of responsible and effective weed control in agriculture. Completely revised with 35% new content Contains expanded coverage of ethnobotany, the specific identity and role of invasive weed species, organic agriculture, and herbicide resistance in GM crops Include an emphasis on herbicide resistance and molecular biology, both of which have come to dominate weed science research Covers all traditional aspects of weed science, as well as current research, Provides broad coverage, including relevant related subjects like weed ecology and weed population genetics.