Inhibition of fatty acid production subsequently inhibits cell division. In rice plant,
Cyhalofop-butyl is metabolized to the herbicidal inactive form known as the diacid so it is safe to rice. In grasses, the
herbicidal efficacy is due to the biologically active monoacid metabolite. As well as Penoxsulam, a triazolopyrimidinee
sulfonamide rice herbicide, which inhibits the plant enzyme AcetoLactate Synthase (ALS) which is essential for the
synthesis of branched-chain amino acids valine, leucine and isoleucine. Inhibition of amino acid production
subsequently inhibits cell division, can controls annual sedges and many broadleaf weeds, also Echinocloa spp, but it is
safe to rice.