Farming methods change rapidly. But farm leases based largely on custom change slowly. So if custom can't keep up with the changes, we'll have to work out new arrangements ourselves.
Arthur, I. W. and Timmons, John F.
"Keep Leases Up With New Farming Methods,"
Iowa Farm Science: Vol. 5
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol5/iss8/2