Ploovium works zone by zone, meaning that for each zone it learns the hydric behavior of the soil and gives specific previsions. Therefore it’s crucial to know what a ZONE is.
We define “zone” a field or part of it that has some general homogeneity in terms of soil composition, exposure, slope, culture. If a field, even a very large one, has in principle a homogeneity in this sense and you have sowed the same crop, that may consider it a zone.
For each zone, Ploovium uses the data produced by a device put in the ground. The number of sensors per device (usually two) and the depth at which to insert them depends on the crop and the progress of its root system in the different phenological phases.