Methods and systems for use in controlling irrigation

An irrigation system comprising:

• a computer
• a plurality of irrigation controllers, wherein one or more of the plurality of irrigation controllers are in communication with the computer that is remote from at least one of the one or more of the plurality of irrigation controllers, and wherein each of the one or more of the plurality of irrigation controllers controls one or more irrigation devices in implementing a respective irrigation scheduling instruction stored at each of the one or more of the plurality of irrigation controllers;
• and
• one or more control elements, wherein each of the one or more control elements are coupled to a respective one of the one or more of the plurality of irrigation controllers, and wherein at least one of the one or more control elements are shared with one or more of the one or more of the plurality of irrigation controllers that are not coupled with the control element;
• wherein the computer is configured to:
• cause an assumption broadcast to be communicated to each of the one or more of the plurality of irrigation controllers, wherein the assumption broadcast defines assumed states of operation of the one or more control elements;
• identify, from a reply to the assumption broadcast from at least a first irrigation controller of the one or more of the plurality of irrigation controllers, a correction to a state corresponding to a first control element of the one or more control elements, wherein the first control element is associated with at least the first irrigation controller;
• update state information corresponding to the first control element in response to the identifying the correction;
• and
• cause a subsequent notification to be communicated to the one or more of the plurality of irrigation controllers, wherein the subsequent notification comprises the updated state information corresponding to the first control element.