GilCase. I do not believe you are correct. I don't think you can register a tractor in CT even if you wanted to. There is no such thing as tractor plates that I know of. Also, there is no way to "register" a farm. The only thing close is a farm tax exempt stamp but that only elevates sales tax. There are farm plates for trucks but they are exclusive of each other. You can register a farm for cooking, selling to public exc. But that just registers the kitchen or store. I believe all you need is a SMV placard on back and I'm sure there are some roads you can't be on. Go to East Windsor this time of year when harvesting tobacco. Wen you are stuck in the traffic parade behind all the 5 series tractors look for the registration plates. Not going to find one.
All my life in CT I have never seen a tractor pulled over by police.
Drive away Gil, if what you say is right I doubt there is a cop who would even know how to write the ticket. Good luck, happy tractoring.