PPO Inhibiting Herbicides<BR>PPO or Protox <BR>Protoporphyrinogen oxidase <BR>Enzyme found in chloroplast and mitochondria needed for formation of chlorophyll <BR>Cell membrane destruction <BR>Many common herbicides have this mode of action!! <BR>Ultra Blazer, Cobra, Goal, Reflex, Ronstar, Resource, Aim, Valor, Storm, Spartan, ET<BR>