## 3 Results and Discussion
### Mineral Analysis
\begin{table}
\begin{tabular}{l c c c c c c c} \hline \hline
**Species** & **Fe (mg/kg)** & **Mn (mg/kg)** & **Cu (mg/kg)** & **Zn (mg/kg)** & **Ni (mg/kg)** & **Cd (mg/kg)** & **Cr (mg/kg)** \\ \hline AMy & 82.81 \(\pm\) 2.57 \({}^{\circ}\) & 60.66 \(\pm\) 2.40 \({}^{\text{bcd}}\) & 113.33 \(\pm\) 0.09 \({}^{\text{ac}}\) & 13.39 \(\pm\) 0.56 \({}^{\text{ab}}\) & 6.76 \(\pm\) 0.00 \({}^{\text{b}}\) & 2.21 \(\pm\) 0.20 \({}^{\text{b}}\) & 10.89 \(\pm\) 0.48 \({}^{\text{a}}\) \\ AD & 94.09 \(\pm\) 4.30 \({}^{\text{de}}\) & 284.64 \(\pm\) 27.45 \({}^{\text{f}}\) & 12.36 \(\pm\) 0.78 \({}^{\text{c}}\) & 15.11 \(\pm\) 0.13 \({}^{\text{ac}}\) & 10.41 \(\pm\) 0.01 \({}^{\text{f}}\) & 2.45 \(\pm\) 0.10 \({}^{\text{b}}\) & 10.40 \(\pm\) 0.04 \({}^{\text{a}}\) \\ AC & 65.16 \(\pm\) 4.86 \({}^{\text{b}}\) & 32.88 \(\pm\) 0.22 \({}^{\text{ac}}\) & 12.47 \(\pm\) 0.27 \({}^{\text{c}}\) & 39.05 \(\pm\) 0.20 \({}^{\text{de}}\) & 9.62 \(\pm\) 0.11 \({}^{\text{ef}}\) & 2.45 \(\pm\) 0.03 \({}^{\text{b}}\) & 10.10 \(\pm\) 0.81 \({}^{\text{a}}\) \\ AR & 73.66 \(\pm\) 1.37 \({}^{\text{b}}\) & 71.46 \(\pm\) 1.62 \({}^{\text{de}}\) & 12.71 \(\pm\) 0.10 \({}^{\text{c}}\) & 35.45 \(\pm\) 2.89 \({}^{\text{d}}\) & 5.13 \(\pm\) 0.32 \({}^{\text{a}}\) & 2.24 \(\pm\) 0.31 \({}^{\text{b}}\) & 10.46 \(\pm\) 0.64 \({}^{\text{a}}\) \\ AMs & 127.26 \(\pm\) 0.28 \({}^{\text{f}}\) & 11.38 \(\pm\) 1.39 \({}^{\text{ab}}\) & 10.16 \(\pm\) 0.43 \({}^{\text{ab}}\) & 19.19 \(\pm\) 2.27 \({}^{\text{bc}}\) & 7.92 \(\pm\) 0.34 \({}^{\text{c}}\) & 0.23 \(\pm\) 0.02 \({}^{\text{a}}\) & 11.31 \(\pm\) 0.92 \({}^{\text{a}}\) \\ AP & 102.02 \(\pm\) 6.51 \({}^{\text{e}}\) & 159.89 \(\pm\) 5.12 \({}^{\text{e}}\) & 10.16 \(\pm\) 0.32 \({}^{\text{ab}}\) & 9.15 \(\pm\) 1.11 \({}^{\text{a}}\) & 8.89 \(\pm\) 0.02 \({}^{\text{de}}\) & 0.39 \(\pm\) 0.03 \({}^{\text{a}}\) & 10.78 \(\pm\) 0.64 \({}^{\text{a}}\) \\ AL & 55.22 \(\pm\) 4.14 \({}^{\text{a}}\) & 10.16 \(\pm\) 0.81 \({}^{\text{a}}\) & 11.58 \(\pm\) 0.57 \({}^{\text{bc}}\) & 22.57 \(\pm\) 2.04 \({}^{\text{e}}\) & 8.69 \(\pm\) 0.17 \({}^{\text{cd}}\) & 0.37 \(\pm\) 0.00 \({}^{\text{a}}\) & 10.09 \(\pm\) 0.25 \({}^{\text{a}}\) \\ AS & 85.95 \(\pm\) 3.02 \({}^{\text{cd}}\) & 84.39 \(\pm\) 4.01 \({}^{\text{d}}\) & 9.51 \(\pm\) 0.10 \({}^{\text{a}}\) & 44.77 \(\pm\) 1.67 \({}^{\text{e}}\) & 10.65 \(\pm\) 0.03 \({}^{\text{g}}\) & 2.53 \(\pm\) 0.01 \({}^{\text{b}}\) & 10.01 \(\pm\) 0.08 \({}^{\text{a}}\) \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Concentration of iron, manganese, copper, zinc, nickel, cadmium, and chromium for studied _Acacia_ species. \begin{table}
\begin{tabular}{l c c c c} \hline \hline
**Species** & **NT (\%)** & **P (mg/kg)** & **Ca (mg/kg)** & **K (mg/kg)** & **Na (mg/kg)** & **Mg (mg/kg)** \\ \hline AMy & 2.25 \(\pm\) 0.26 \({}^{\text{a}}\) & 1293.82 \(\pm\) 33.18 \({}^{\text{d}}\) & 8917.50 \(\pm\) 483.05 \({}^{\text{a}}\) & 9269.58 \(\pm\) 30.57 \({}^{\text{d}}\) & 1466.83 \(\pm\) 31.14 \({}^{\text{c}}\) & 1936.45 \(\pm\) 8.53 \({}^{\text{a}}\) \\ AD & 2.99 \(\pm\) 0.03 \({}^{\text{d}}\) & 684.65 \(\pm\) 28.37 \({}^{\text{c}}\) & 9428.17 \(\pm\) 5.19 \({}^{\text{a}}\) & 3512.75 \(\pm\) 239.6 \({}^{\text{a}}\) & 149.85 \(\pm\) 2.43 \({}^{\text{a}}\) & 2841.44 \(\pm\) 153.82 \({}^{\text{b}}\) \\ AC & 3.03 \(\pm\) 0.02 \({}^{\text{d}}\) & 1211.19 \(\pm\) 1.21 \({}^{\text{d}}\) & 28,465.31 \(\pm\) 1362.98 \({}^{\text{b}}\) & 11 tion [40]. When considering acacia leaves for soil fertilization, it is important to recognize that Na, in small amounts, can serve as a secondary nutrient, particularly in plants adapted to utilize it efficiently. Nevertheless, careful management is required to prevent excessive salinity issues when incorporating these plants into the soil [41]. Significant differences were also observed in Mg concentration, with AMy recording the lowest (1940 mg/kg) and AS the highest (2990 mg/kg) contents. Previous studies reported higher Mg values for _A. reficiencs_ and _A. senegal_.