DEVELOPMENT OF A MODEL FOR SUPPORTING AGRICULTURAL DECISION-MAKING BASED ON AGRO-METEOROLOGICAL SENSOR DATA: A CASE STUDY OF THE IMETOSSTATION
Keywords:
precision agriculture; agro-meteorological sensors; IMETOS; FieldClimate API; irrigation scheduling; VPD; soil moisture indexAbstract
This paper proposes a practical data-driven model that converts hourly observations from an IMETOSstation and connected soil sensors into interpretable indicators for microclimate stress monitoring, irrigation advisory, pesticide spraying windows, and station power-health diagnostics. The case study uses an exported FieldClimate dataset containing hourly air temperature, dew point, solar radiation, vapor pressure deficit (VPD), relative humidity, precipitation, wind statistics, and soil measurements (5TE volumetric water content, dielectric permittivity, soil temperature; Watermark soil-water tension), complemented by daily reference evapotranspiration (ET0). Results demonstrate how raw sensor streams can be operationalized into simple, auditable rules and normalized indices such as soil moisture index (SMI), soil water deficit, heat-stress hours, and spray-suitable hours.
References
[1] Pessl Instruments GmbH. iMETOS3.3 – Extended Manual. January 2023. Available: https://metos.global/wp-content/uploads/2023/01/iMETOS-33-extended-manual.pdf
[2] Pessl Instruments GmbH. FieldClimate Manual (platform overview and analytics). Available: https://metos.global/en/fieldclimate-manual/
[3] Pessl Instruments GmbH. FieldClimate API Documentation (v1). Available: https://api.fieldclimate.com/v1/docs/
[4] METOS® Support Center. HMAC authentication for FieldClimate API (Postman example). Updated November 4, 2025. Available: https://support.metos.at/en/support/solutions/articles/15000046769-hmac
[5] Decagon Devices, Inc. (now METER Group). 5TE Sensor Integrator Guide: Volumetric Water Content, Electrical Conductivity, and Temperature. Available: https://geomor.com.pl/wp-content/uploads/2017/05/5TE-Integrators-Guide.pdf
[6] Mississippi State University Extension Service. Irrometer Watermark Series: Installation Procedures. Publication 3540 (01-21). Available: https://www.irrometer.com/pdf/ext/MSU%20EXT%20Watermark%20Installation%20Procedures.pdf
[7] Allen R.G., Pereira L.S., Raes D., Smith M. Crop evapotranspiration—Guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56. FAO, Rome, 1998. Available: https://www.fao.org/4/x0490e/x0490e00.htm
[8] Aguilar J., Rogers D., Kisekka I. Irrigation Scheduling Based on Soil Moisture Sensors and Evapotranspiration. Kansas Agricultural Experiment Station Research Reports, 2015. Available: https://newprairiepress.org/kaesrr/vol1/iss5/20/
[10] K. Nosirov, S. Begmatov, M. Arabboev, T. Kuchkorov, J. C. Chedjou, K. Kyamakya, P. De Silva, and A. Kolli. The greenhouse control based-vision and sensors. Developments of Artificial Intelligence Technologies in Computation and Robotics, 2020. Available: https://doi.org/10.1142/9789811223334_0181
[11] T. Kuchkorov, N. Atadjanova and N. Sayfullaeva, "Big data analysis for soil monitoring in Smart farming," 2019 International Conference on Information Science and Communications Technologies (ICISCT), Tashkent, Uzbekistan, 2019, pp. 1-4, doi: 10.1109/ICISCT47635.2019.9012016.
[12] R. N. Usmanov, T. A. Kuchkorov and E. Tetsuji, "Processing real time environmental data through sensor network," 2017 International Conference on Information Science and Communications Technologies (ICISCT), Tashkent, Uzbekistan, 2017, pp. 1-4, doi: 10.1109/ICISCT.2017.8188580.
[13] R. N. Usmanov, T. A. Kuchkorov, and R. I. Oteniyazov. Environmental monitoring to get special data from observation points (based on ecological factors). Technical Sciences, 2016. Available: https://cyberleninka.ru/article/n/environmental-monitoring-to-get-special-data-from-observation-points-based-on-ecological-factors