Spreader for particulate material with improved spread control

A method of controlling spread pattern of a particulate material broadcasted by a spinner spreader, the method comprising:

• permitting the particulate material to flow through a plurality of sluices situated in a particulate material path between a bin and a rotatable disc of the spinner spreader, each sluice of the plurality of sluices receiving a portion of the particulate material and delivering the portion of the particulate material to a radial and/or angular position on the rotatable disc;
• and
• adjusting the radial and/or angular position on the rotatable disc to which the portion of the particulate material from at least one independently moveable sluice of the plurality of sluices is delivered by longitudinally translating the at least one independently moveable sluice of the plurality of sluices, independent of all other sluices of the plurality of sluices, to change position of the at least one independently moveable sluice relative to the rotating disc thereby changing the spread pattern of the particulate material broadcasted by the rotatable disc.