Automatic adjustment of irrigation schedules during the year

摘要

A method of controlling irrigation to an irrigated area comprises: extrapolating an irrigation schedule at least partly as a function of at least two user entered data points; and executing the irrigation schedule by an irrigation controller. The user entered data points can all be entered at the same time or over a period of time. Furthermore, two or more user entered data points may be entered for the same date. Additionally, the user entered data points may be deleted. A warning is preferably displayed to the user (a) when a user-entered data point is projected to result in an irrigated area not receiving adequate water to meet a plant's water requirement, or (b) when an irrigated area is projected to receive excessive water.