The determination of the optimal time as well as the optimal amount of nutrient and water application for a certain forecast period is one of the primary tasks of agriculture. Knowledge of the water content of the soil plays a special role in this context, for example, in order to determine the necessary performance values for automatic irrigation and fertilization tailored to this. Water-related soil characteristics are not only important for agricultural land, but for all soils that have an influence on the formation of surface runoff or new groundwater.
A thorough understanding of soil processes and mechanisms is needed to improve data identification and evaluation. The soil system as a water reservoir must be comprehensively understood and capable of being mapped in data. This requires, among other things, consideration of the hydrologic cycle in watersheds and how it is linked to plants such as field crops.