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  Irrigation Precipitation Rate advert image shown if present

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The speed and quantity of irrigation water, typically measured as litres or mm, that is applied for a specified period of time, with a typical unit of time being one second, minute or one hour. For example, a value of 1.5 litres per second could be given as a precipitation rate. The area over which the irrigation is being applied is usually calculated to provide a value for how much water has been applied over the entire area, often being stated as mm per hour.