For fruit/vegetable and animal raising, if you could take a big chunk out of your grocery bill, that is real money 'earned'.
Seems like the secret to that is to supply as many of your own needs yourself as possible. For example, if you raise chickens, free range and grow all the grain feed you can on your own land. Use breeds of chickens that will set their eggs, don't pay for peeps. Use the manure on your garden, don't buy it at the garden store. It has to function as much as is practical as a closed system to keep your out of pocket costs low. Of course your sweat time will be enormous.
That would be like going back to farming in the pre-WWII days. They didn't have much for money, but they had the basics covered. By and large, the farms kept meat animals and chickens/ducks/turkey and raised crops and had a big vegetable garden and some fruit trees. They did their own butchering and preserving too.
If you own a woodlot, it is making money - literally. Just like money in a bank account drawing interest. You can increase the growth in value by managing the timber. as said before, you have to wait for the trees and the market.
Don't overlook the obvious to make your land pay. If farmland was capable of making lots of money for what's invested, we couldn't afford to buy it

Dave.