A decision support system in agriculture is a system that, based on information from various sources, assists farmers in making important decisions. Within the EIP PRO-PRODUCTION project, a decision support system for irrigation called SPON was developed. SPON provides farmers with recommended irrigation times and amounts for the next five days. In our study, we calculated the costs of implementing the SPON at the level of a single plot and the level of the entire agricultural holdings participating in the EIP PRO- PRODUCTION project. We also conducted two surveys with which we wanted to determine the experiences agricultural holdings had with the use of SPON and the interest of farmers in using SPON on their farms. We found that the costs of setting up the SPON for one measuring device amounted to 2,543.40 €, most of which were information technology services. For the effective use of SPON, it is crucial that farmers do not rely solely on the system's calculated recommendations but also understand the principles of professionally correct irrigation. In the survey, most workshop participants, during which the operation of SPON was presented as part of the EIP PRO- PRODUCTION project, responded that, despite having existing irrigation systems on their farms, they acquired new knowledge about proper irrigation techniques during the workshops. In the future, collaboration between the state, experts, and farmers will be essential to ensure support, education of farmers, continued operation, and improvements to the SPON.
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