Metric

Metribuzin is a selective herbicide of the chemical class triazines.Metribuzin can be applied as a foliar spray or soil treatment to control pre- and post-emergence broadleaf weeds and annual grasses. Metribuzin also has a residual effect on the soil. Metribuzin is primarily absorbed by the roots, but also by the leaves to a lesser extent. It is translocated acropetally in the xylem to the leaves where it has its effect. The mode of action of metribuzin is that it acts by inhibiting photosystem II of photosynthesis by disrupting electron transfer. This results in death due to starvation in the target plant and Clomazone is a broad-spectrum herbicide used for control of annual grasses and broadleaf weeds in cotton, peas, pumpkins, soybeans, sweet potatoes, tobacco, winter squash, and fallow wheat fields. Depending on the crop, geographical area, and timing, it can be applied early pre-plant, preemergent, or preplant-incorporated. Because clomazone is an inhibitor of plant pigments, users must exercise caution to avoid drift or vapors which may cause bleaching damage to non-target foliage. Clomazone is available in emulsifiable concentrate formulations.