This system gives you a flexible amount of money that can be turned into cash or rolled back over at regular intervals in case you need a larger amount of cash. Placed in large CD's, annuities, treasury bills or other such money funds on which you will earn interest. Better yet, invest in hard assets that give you a hedge against inflation and a return. Part or all of this may remain invested in your farm. Then you rent the farm or sell it on land contract.
Good cash accumulated life insurance policies also can be beneficial.
If you start early, you can accumulate good cash values with sizable death benefits to protect your family in the younger years. You may reach retirement with a principal amount that will not support you with enough interest or dividends. You then will need to annuitize your cash assets. You may have other income, also. This could be from a pension fund from a job you worked during your lifetime.