highly significantp ≤ 0.01
Figure S3 represents the data of leaf area and number of leaves per plant, the effect of FeO NRs source and concentrations were highly significant (p ≤ 0.01) and positive up to the concentration of 50 mg/L for biologically synthesized (Figure S3a,d) and 25 mg/L for chemically synthesized NRs (Figure S3b,c).