Mode of action of herbicides used in rice Mode of action Chemical family Common name Acety CoA Carboxylase (ACCase) Inhibitors - prevents formation of fatty acids Aryloxyphenoxy propanoates Cyclohex-anediones Fenoxaprop Fluazifop Sethoxydim Acetolactate synthase (ALS), Acetohydroxyacid synthase (AHAS) inhibitors - blocks protein synthesis Imidazolinones Sulfonylureas ImazapyrChlorosulfuron Metsulfuron Mitosis inhibitors - interferes with new plant growth Dintiroanilines Pendimethalin Trifluralin Synthetic auxins - growth regulators Phenoxy acetic acids Quinolines 2,4-D, MCPA Quinclorac Photosystem II inhibitors - blocks food producing pathway Triazines Triazones Uracils Photosystem II inhibitors (different binding behavior than groups 5 and 7 but same site) - blocks food producing pathway Benzothiadiazoles Nitriles Phenyl-pyradazine Bentazon Photosystem II inhibitors (different binding behavior than groups 5 and 6 but same site) - blocks food producing pathway Amides Ureas Lipid synthesis inhibitors (but not ACCase inhibitors) Thiocarbamates EPSP synthase inhibitors - blocks protein synthesis Glyphosate Glyphosate- IPA Glutamine synthetase inhibitors - ammo ni a as si mil at ion in hi bi tor Ph os phor ylated amino acid glufosinate PPO inhibitors - cell membrane disruptorUnknown site of action Chloroacetanilide s Butachlor, PretilachlorPhotosystem I electron diverters - cell membrane disruptor Bipyridiliums
