If you have a UTV or ATV, then you might consider the smaller 12VDC electric spreaders that mount on them. Lots of folks (including me) use them to seed food plots with. If needed, you can add adjustable side plates to change (narrow or widen) the pattern of the seed being cast with it. Or, you can get one that is pull behind and driven by the ground speed (and probably use the riding lawn mower to pull it with).
Just because you have nice tractor, don't get into the mindset that everything you need done has to be done with the tractor! They have hundreds (thousands?) of uses, but sometimes there are more efficient ways to get things done. This is exactly why a lot of hunt clubs use the spreaders like I mentioned above to seed/fertilize their food plots with. They are usually planting firebreaks, logging roads, power lines, and gaslines. The 3pt spreaders simply throw it to far (even with the directional settings) and you wind up wasting a lot of expensive seed and fertilizer.