Eddie Albert knew what a good hayfork was !
This example is fully forged tapered prongs. (Also known as a "sheaf fork. A two prong version better suited to sheafs, three prongs, a little better for loose hay & sheafs. )
Donald Trump, Not so much...
This example prongs are round steel rods bent & welded, it wont load & release as well as tapered prongs.
In all fairness to Mr. Albert & Mr. Trump,
I seriously doubt either one knew a good hayfork, Neither their guy in their Props Dept too.
Props Dept just had an order to come up with a "pitchfork" and these examples are what the local hardware store had on hand.
Of course during filming "Green Acres", A high quality fork was still a common thing at any hardware store.
Btw, Sheaf tossing is a common sport in Scottish Games.
A burlap sewn bale serves as the "sheaf", its picked up using a fork & tossed over a high crossbar.