The pitfalls of water potential for irrigation scheduling

The water potential (Ψp), has been widely used as an indicator of plant status for irrigation management purposes. simple infrastructure needed its measurement and direct relation to basic physiological processes, have contributed the popularity methodology. When scheduling, it is commonly assumed that unavoidable relationship exists between transpiration (T), soil content Ψp. Nevertheless, worth remembering variations in Ψp are not solely related changes content, but also expression interaction environment. We a soil-plant-atmosphere-continuum (SPAC) model highlight importance considering such interactions through series silico experiments. Our analysis shows evaporative demand, hydraulic architecture plant, texture depth play key roles final observed. To establish programs based on Ψp, without environmental factors influence it, can create paradox having suffers greater stress even when high volumes applied. conclusions from our provide some warnings should be considered using schedule irrigation.