Irrigated agriculture can be environmentally sustained provided the basic principles of good water and fertilizer management are recognised, Siri SmartNutrigator is designed and developed based on these facts and to be used by Farmers according to their needs with necessary electrical protections like High/Low-Voltage cut-off and Voltage Stabilisation. It is standalone Fertigation dosing unit with EC & pH Monitoring System. The system can handle unto 5 Tank/Dosing units of liquid fertiliser. Research shows that fertigation increases efficient use of water and fertilizers, produces higher yields, improves quality of the production. The system employs a stainless-steel dosing pump for injection of fertigation using ventury and solenoid valves. The Rate of fertigation injection could be designed based on the filed requirements/conditions.