Running off of LPG used to be big here on the farm trucks. My father and grandfather had LPG tanks saddled over the bed where you would typically put a toolbox. Had a switch on the dash to go back and forth between LPG or regular gas tank. I need to dig up some pictures of that old truck. It was a "Big 10" red with a white stripe. Had a big long whip antenna coming off the bed for the Motorolla two way radio. I always remember that radio was huge and had the big speaker bolted under the dash.
Anyway, I digress down memory lane. The un nerving thing of all was that they had air hoses hooked to the tank and didn't bat an eye to air up a tire with it, while smoking of course.
They still had a few LP tractors but they also used flame cultivators. Regular cultivator but had burners to shoot a flame between the rows. Once the cotton got tall enough that is how they controlled weeds in the row. Cultivator got the middles, fire got inbetween the cotton plants. Cotton has a woody stem and doesn't hurt it at all. The tractors would either have a regular house type LP tank mounted on the front saddle tank rack or sometimes they had the tank mounted on top of the cultivator toolbar.
