“…They are useful mathematical tool for predicting the levels of the HMs in crop plants depending on certain soil properties including soil HMs, pH, and OM as independent variables (Waegeneers, Ruttens, & Temmerman, 2011). Regression models are available for many crop plants (e.g., Bešter, Lobnik, Eržen, Kastelec, & Zupan, 2013; Chaudri et al, 2007; Eid, Alrumman, Farahat, & El‐Bebany, 2018; Eid, Alrumman, Galal, & El‐Bebany, 2018; Eid, Alrumman, Galal, & El‐Bebany, 2019; Eid, Shaltout, Abdallah, et al, 2019; Eid, Shaltout, Alamri, et al, 2019; Novotná, Mikeš, & Komprdová, 2015; Ramadan & Al‐Ashkar, 2007; Waegeneers et al, 2011; Zeng et al, 2011). For the safe crop production, it is useful to create multiple models of regression to investigate the correlation between HMs in plants and in soils supporting them to evaluate the dangerous levels of these HMs in soil.…”