Coupled Venturi Fertilizer Injector is a complete inline fertigation assembly that includes the Venturi injector body coupled with all necessary fittings, suction line, filter and control components for direct installation into an irrigation mainline. This complete assembly typically includes a Venturi injector, a filter to protect against debris, a suction line for drawing the fertilizer, and control valves to regulate water flow and solution injection rates, giving Nigerian farmers a ready-to-install complete fertigation kit without needing to source separate components