Timing; Spray wheat and barley from 3 leaf stage up to booting. For oats spray Ariane from 4 leaf stage up to booting. For best results spray when weeds are actively growing. Active ingredient of Ariane ; Fluroxypyr 86g/L + Chlorpyralid 23g/L +MCPA 415g/L. It is applied at a rate of between 1-2 L/ha.