Abamectin Acaricide Acephate Acetochlor Acibenzolar Acibenzolar-S-methyl Acrylonitrile Action level Agent blue Agent Green Agent Orange Agent Pink Agent Purple Agent White Agrochemical Alachlor Aldicarb Algaecide Allyl isothiocyanate Aluminium phosphide Aluminium sulfate Amdro 3-Amino-1,2,4-triazole Aminocyclopyrachlor Aminopyralid Amitraz Ammonium sulfamate Ant chalk Anvil (insecticide) Asulam ATC code P03 Atrazine Atrazine controversy Avicide Azinphos-methyl Azoxystrobin