An introduction to weed biology -- Herbicide discovery and development -- Herbicide uptake and movement -- Herbicide selectivity and metabolism -- Herbicides that inhibit photosynthesis -- Inhibitors of pigment biosynthesis -- Auxin-type herbicides -- Inhibitors of lipid biosynthesis -- The inhibition of amino acid biosynthesis -- The disruption of cell division -- Inhibition of cellulose biosynthesis -- Herbicide resistance -- Herbicide tolerant crops -- Further targets for herbicide development.