The present invention discloses an irrigation control system (100) includes a controller (202) for controlling multiple irrigation channels (C1, C2, Cn), a sensor interface (204) connected to the controller (202), multiple sensor connectors (CN1, CN2, CNn) corresponding to each of the multiple irrigation channels (C1, C2, Cn) provided on the sensor interface (204), and one or more sensors (S1, S2, Sm) connected to the sensor connectors (CN1, CN2, CNn). A single sensor is connected to a single sensor connector and configured to provide an output to the controller (202) such that the irrigation channel (C1, C4) corresponding to the sensor connector (CN1, CN4) is controlled based on the output of the sensor (S1, S2). Further, the output of a single sensor (S1, S2) connected to a sensor connector (CN1, CN4) is used to selectively control one or more irrigation channels (C2, C3, C5) corresponding to consecutive sensor connectors (CN2, CN3, CN5) immediately preceding or following the sensor connector (CN1, CN4), the consecutive sensor connectors (CN2, CN3, CN5) being disconnected from the sensors or being connected to defective sensors.
