Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Tamara MYSLYVA, Petro NADTOCHIY, Yurii BILYAVSKYI, Petro TROFYMENKO
This paper provides the results of assessing the possibility of using frequency ratio (FR) and Shannon’s entropy (SE) models to predict the intra-field spatial heterogeneity zones (IFHZ) which are taken into account when performing various technological processes in precision farming. The studies were carried out in 2021-2022 in the Radomyshl community of Zhytomyr raion (Zhytomyr oblast, Ukraine) in an area of 6.602 km2. To determine IFHZ, nine soil parameters were used, the suitability of which for prediction was determined by multicollinear analysis. These data include the hydrolytic acidity, nitrogen, phosphorus and potassium content, the soil buffer balance index, and B, Mo, Cu, and Zn content. The area under the receiver operating characteristic (AUROC) method has been utilised to validate both FR and SE models. The research suggests that the AUROC curve for SE (0.84) was better than that for FR (0.82). Hence, the SE model predicts IFHZ more accurately than the multivariate statistical model FR in the study area.
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