Int. on Oper. Does not include costs or returns for storage of grain or government programs.
Research shows a yield advantage for no-tillage on some Ohio soils.
Part or all of labor may be a variable cost if paid labor varies with acres farmed. It's a fixed cost if labor costs do not change with acres farmed. Reflects 1000 acres, no-tillage. See Table 1 for discussion on how to fit to your situation. Average based on 1996 data.