Hello, name is Paul , WG0G
I do not know of any current nets for tractors.
I operate daily and have HF to UHF in my car. I cover a 7 state area and use ham radio to pass the time between stopping to look at and try and buy old Farmall"s. I spend most of my time on 40M and 80M.
Pick a time and freq, will try and meet you. I can also stop and look at tractors for sale in the upper mid-west area.