iodosulfuron-methyl-sodium is a systemic, selective herbicide of the sulfonylour family. It acts by blocking the enzyme ALS, a synthetase of oxalactate. It is absorbed mainly by the leaves and to a very small extent by the roots and then transported with both the anion and the cations juice. A few days after spraying the growth of the fighting weeds has already stopped, resulting in them becoming chlorotic and eventually deadening.
Diflufenican inhibits the biosynthesis of carotenoids, causing pronounced metachromatism or whitening of young weeds. The fastest results are achieved after pre-germinating application to young weeds. The reddish-purple color of the foliage which is often observed after application is a result of the stress caused
by the lack of carotenoids; Then the young weeds die. Diflufenican is absorbed mainly by the root, but also by the foliage of young weeds.