Metribuzin is a pre and post-emergence herbicide used to control grasses and broad-leaved weeds in a range of crops. It acts by inhibiting photosynthesis in susceptible plant by binding to a protein of the photosystem II complex. Foliar applied Metribuzin is moderately absorbed into the plant and translocation is also upward. It is selective systemic herbicide, absorbed predominantly by the roots, but also by the leaves, with translocation acropetally in the xylem. Pre and post emergence control of many grasses and broad-leaved weeds in soya beans, potatoes, tomatoes, sugar cane alfalfa, asparagus, maize and cereals.