... inhibitor at the photosystem II receptor site. Mode of action Selective contact herbicide, absorbed mainly by the foliage, ... but also absorbed by the roots, with translocation acropetally in the xylem. Uses A contact herbicide controlling Anthemis, Chamomilla ... further degradation (R. Huber & S. Otto in Rev. Environ. Contam. Toxicol., 137, 111-134). In sunlight, bentazone undergoes rapid degradation, ...