Depending on the crop evapotranspiration level and the soil’s capacity to hold water, the intervals vary from 6 to 14 days and up to 21 days for loam soil, with shorter intervals during flowering. The exhaustion of the water available in the soil must not exceed 40%. In the case of top-up irrigation, the best results are obtained when the water is applied during the flowering period.
In light texture soil, spray irrigation provides advantages to keep the soil moist deep-down. Furrow irrigation is still broadly used on medium texture soil.