Judging by the vertical bars on the grille, this is the front end of a Ford Half-Ton Truck from the 1942-47 era. I'd guess it is the earlier part of this range but can't be certain. They look so similar. In 1948, the grille changed to a horizontal pattern.
As I was searching to find the year of this vehicle, I discovered some interesting information. During WWII the Ford Motor Company was making a lot of vehicles for the US Military. Henry Ford was 80 years old and had previously retired. His son, Edsel (the namesake of the later famed design flop) was president of the company. Edsel died at a very young age in 1943. Henry tried but proved to be too old to resume control of the company so the US government brought his 26 year old grandson, Henry the 2nd (Edsel's son), back from the navy to head the company and keep production rolling. This truck would have been a model they were producing at the time. Military trucks had a very similar look to them. Apparently it was only in the latter part of the war that the US government allowed civilians to purchase new trucks again because production capacity was dedicated to the war effort earlier on. Even then you had to show a true need for it. I assume farming would have qualified.