Figure 4.

Effect of application of zinc oxide nanoparticles (ZnONPs), salicylic acid (SA) and their combination on elemental status of rice plants, protein content (A), As amount (B), nitrogen, phosphorus, potassium (N, P, K) (C), and iron, zinc, manganese (Fe, Zn, Mn) (D) under arsenic (As) stress at the 50 day stage. All the data are the mean of 5 replicates (n = 5) and vertical bars demonstrated standard error (±SE). Different letters indicate significant differences among treatments at p < 0.05.