Was the engine hot or cold when you tried to pull it? While I have not done this on full size tractors I have had occasions when one of two things would help loosen a stubborn filter.
One thing I have tried is to try and loosen the filter when the engine is warm, not enough to lose fluid, just enough to break the seal before changing it. One engine I had would always need to have this performed.
On another I have had to heat the filter when the engine was cold. Not that I would recommend taking a torch to it, I just found a safe way to only heat the filter. Physics should support that if the filter threads are heated and slightly expanded when the engine is cold, even just a fraction, it should assist in removal.
Please note that these techniques were not used on 'real' tractors, so if these techniques are not recommended or allowed by your dealer, please do not try them. This is only a reference of what I have tried. Insert CYA statement here.
In all cases, I have always used a really good filter wrench with a large handle, just remember not to apply too much force as you don't want to risk damage. Oh and check with your dealer as they might offer suggestions as well.
Good luck!