If you already have two farm land rentals in TurboTax (form 4835, rentals you receive a percentage of the crop as rental income), I would recommend keeping them separate. One or both probably have some depreciating assets and separate expenses.
If you already have two farm land rentals in TurboTax (schedule E, rentals you receive a cash payment as rental income), I would recommend keeping them separate as well. One or both probably have depreciating assets and separate expenses.