highly significantp ≤ 0.01
Statistical analysis revealed a highly significant effect ( p ≤ 0.01) for most of the selected factors ( Table 2 and Figure 1 a,c,d), except for the leaf granulometry factor, which showed no significant variation ( p > 0.05) between whole and ground leaves in terms of essential oil yield, as shown in Table 2 and Figure 1 b. 3.2.2.