Ultraviolet-B Radiation and Nitrogen Affect Nutrient Concentrations and the Amount of Nutrients Acquired by Above-Ground Organs of Maize

Figure 1

Interactive effects of UV-B radiation and nitrogen on NUE (g g⁻¹ N) of maize. Means ± S.E. within each N level followed by the same letter (capital letters for N effects) were not significantly different at 𝑃<0.10. Significance of main effects: ns: not significant, **𝑃<0.01, ***𝑃<0.001; UV: high UV-B treatment; C: ambient UV-B treatment; N0, N1, N2, N3: 0, 100, 200 and 300 kg N ha⁻¹.