I was going to plant buckwheat in all my pastures due to the bee's are suppose to love it

I heard they were suppose to flower all over the place and be very hardy in my area.

I also heard that they were suppose to produce a ton of crop (example. 50 pounds of seed was suppose to make 1500 pounds of crop)

So this would be good for my chickens too

Now here is the problem How do I harvest it.

I don't think it is very practical to buy a combine to harvest 3 acres of land lol.

If someone sold a thresher I would get one but I cant find one anywhere used of otherwise

What do you guys suggest? Thanks