10.18453/rosdok_id00005712 Steiger, Alexander Alexander Steiger http://d-nb.info/gnd/1418887935 https://orcid.org/0009-0004-0582-4575 Universität Rostock, Fakultät für Agrar, Bau und Umwelt, Professur Geodäsie und Geoinformatik 2025 620 Engineering & allied operations 630 Agriculture 2025 en https://purl.uni-rostock.de/rosdok/id00005712 urn:nbn:de:gbv:28-rosdok_id00005712-5 This dissertation investigates algorithms and a cloud-based spatial data infrastructure (SDI) for the site-specific management of water and nutrients based on sensor data. An open-source SDI integrated sensor data, maps, and decision-support outputs within an OGC/ISO-compliant framework. A Python-based DSS automatically generated fertigation maps for a hose-reel irrigation system. Field trials in Germany, France, and Turkey demonstrated the feasibility of the developed system.