dust retention seed appearance and seed flow in one mode of operation an operator may place a quantity of seed to be separated into batches and treated in place in untreated seed hopper 12 seed is dispensed by operation of vibratory feeder into scale 14 pre mix container 24 is charged with ingredients for the treatment composition and agitator motor 26 is engaged to mix and maintain composition of the treatment composition a second treatment composition may be prepared by charging a second pre mix container 46 with ingredients for the second treatment composition and engaging agitator motor 28 to mix and maintain composition of the second treatment composition when heated air is desired to be introduced into treatment container 18 a heat source and blower associated with the control panel 22 may be activated predetermined quantities of seed are then dispensed by scale 14 to conveyance hopper 16 seed falls into treatment container 18 and falls into bowl 66 rotation of bowl 66 causes seed to be urged to the outside of the bowl and against the inner side of treatment container 18 as well as upward toward lid 84 fins direct seed back toward the center of treatment container 18 and down toward bowl 66 controller 22 operates to introduce treatment composition from one or both.