Different plants need different chemicals to treat them and various herbicide groups are listed below:
Inhibitors of lipid biosynthesis, chemicals ending in “fop” or “dim”, eg: diclofop - Nutgrass®, fluazifop - Fusilade®, sethoxydim - Sertin®.
Inhibitors of branched-chain amino acids biosynthesis, eg: Glean®, Pursuit®.
Inhibitors of aromatic amino-acid biosynthesis. eg: Roundup®, glyphosate.
Inhibitors of photosynthesis at photosystem II, eg: atrazine, diuron, bromoxynil, bentazone, propanil.
Inhibitors of photosynthesis at photosystem I, eg: paraquat.
Inhibitors of chlorophyll biosynthesis, eg: oxyfluofen.
Inhibitors of carotenoid biosynthesis, eg: diflufenican.
Disruption of plant hormone action, eg: 2,4-D (2,4-Dichlorophenoxyacetic acid), MCPA (2-methyl-4-chlorophenoxyacetic acid), dicamba, picloran, triclopor.
Inhibitors of tubulin formation, eg: trifluralin
Herbicides with multiple sites of action.
For practical advice on which herbicide to use to treat weeds in your particular area, it is suggested you check with your local produce store first.