The electrolysis also damages the microscopic life in the soil and this leads to an even higher temperature occurring in addition to the iron blades' friction with the soil. It is especially with iron that these phenomena occur.

With ploughs of wood, copper and other so-called 'biologically magnetic' materials, the soil's magnetic field is not disturbed. The conclusion that Schauberger drew from these observations, was that another material other than iron should be used for farming equipment.