| Issue |
E3S Web Conf.
Volume 638, 2025
International Conference on Electronics, Engineering Physics and Earth Science (EEPES 2025)
|
|
|---|---|---|
| Article Number | 03001 | |
| Number of page(s) | 7 | |
| Section | Applied and Engineering Physics | |
| DOI | https://doi.org/10.1051/e3sconf/202563803001 | |
| Published online | 16 July 2025 | |
Model-based approach for measurement of basic soil nutrient
1 University of Ruse, Department of Automatics and Electronics, 8 Studentska str., 7004 Ruse, Bulgaria
2 Siemens LTD, 1000 Sofia, Bulgaria
* Corresponding author: msp@uni-ruse.bg
The article presents a model-based approach for measuring basic soil nutrients. The model-based approach consists of two main phases: data collection using sensor systems and data pre-processing and analysis. A microprocessor system has been developed for measuring basic physicochemical parameters of the soil. Based on the experimental results on the relationship between the main chemical elements and the main soil parameters, it was found that nitrogen strongly correlates with electrical conductivity (0.8304), phosphorus - significantly with acidity (0.5686), and potassium - moderately with acidity (0.3385). Models have been developed for the quantitative assessment of nitrogen, phosphorus and potassium through the measured values of soil acidity, electrical conductivity and moisture. The obtained results show that the developed models are of the 4th and 3rd order. For nitrogen and phosphorus, we could use one model with the values of the three physicochemical soil parameters with R2 0.996 and 0.989 respectively, but for potassium we have two models - EC (R2=0.979) and acidity and moisture (R2=0.994). Future research will be aimed at increasing the experimental data and testing the accuracy of the developed models.
© The Authors, published by EDP Sciences, 2025
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