Fertigation in the open field must be performed with very practical and effective systems. Almost always there is no electricity available so it becomes difficult to power complex fertigation benches that work in a proportional system or in E.C.
The best systems in the open field are the QUANTITATIVE ones such as the FERTLIZER and the VENTURI INJECTOR.
These will distribute the precise quantity of fertilizer calculated according to the area of the sector. Both systems operate by pressure differential and therefore exploit the pressure of the irrigation water without the need for external energy.