In central TX you never saw a PTO baler. We baled a lot of Johnson Grass and sorgum type grasses like Haygrazer. This was coarse heavy stuff and the farmers would use VACs, and SCs, especially when they came out with foot throttles, Ford 8Ns, JD Ms, and Farmall Cs and Hs to bale with. When you hit a thick spot you just throttled the tractor down to let the baler catch up. That is why foot throttle tractors and balers with their own engines were popular around us.I didn't see a PTO baler until 1966.Those that listened to the users did well.