Then I guess you're right. Unless they had a tiny antique tractor tucked away on the farm (which you do see sometimes in my part of the world) they'd probably be back to fork and spade - I'm thinking very few farms these days would be able to produce a horse and plough combination.
I have always depended on the kindness of Strangers - and the bastards let me down!

It was a modern tractor with a cab.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

I've not seen this but I think an old tractor would still work - same for vintage cars, land rovers etc - as long as they are pre-chip technology.
I have always depended on the kindness of Strangers - and the bastards let me down!