A free calculator of a soil's total and readily available water (TAW and RAW), horizon by horizon, with instructions for use, guidance on reading the result and every reference value it uses.
A free irrigation system capacity calculator, in mm of water per day: flow rate of the pump, emitters or sprinklers, hours and days of irrigation, application efficiency, and a comparison with peak ETc. Conversion of a depth into an irrigation time, and hose reel settings. Method, reference values and sources.
In a heatwave, the soil's available water falls as soon as irrigation no longer covers crop evapotranspiration. What research shows about refilling it before summer, with an available water calculator and three simulators.
