Abstract: An irrigation control system for land comprising: (a) at least one meter to measure one or more wheather conditions in a first area; (b) at least one monitor to (i) examine rainfall data derived from a radar scanning at least the first area according to predetermined criteria and (ii) to extract data which is representative of the scanned rainfall in a sub-area of the first area; (c) a store to store the extracted data; and (d) a controller connected directly or indirectly to the meter and the monitor and to the store, to calculate a moisture content value for the sub-area and a predetermined moisture content value for the sub-area, and to regulate the irrigation in a sub-area.

Abstract: An irrigation control system for land includes a weather station to measure one or more weather conditions in a first area; means to measure rainfall in a sub-area of the first area; and a computer connected directly or indirectly to the weather station and rainfall-measuring means. The computer is adapted to monitor the measurements of the weather station and rainfall-measuring means, to calculate a moisture content value for the sub-area from the measurements and a predetermined moisture loss for the sub-area, and to regulate irrigation of the sub-area.