[jabl]

In the sense of a farmer being more likely to have access to a local supply of firewood, and that tractors are probably more used for longer stretches at a time than running down to the grocery store, sure.

Historically, they weren't that common, as large-scale use of wood gas was mostly a thing in Europe during WWII, and during that period continental European agriculture was still mostly horse-driven. After WWII when agricultural mechanization really picked up, fuel was again available so there was no big motivation to put up with the disadvantages of wood gasifiers.