Table 1: Above-ground shoot dry biomass of maize (g m−2) at silking and maturity harvest used to calculate element acquired.

NitrogenRadiationSilkingMaturity
LbSbLbSbGb

N0UV139.9287.9 a161.2 b563.3666.9 b
C166.1328.6 a192.8 a636.9854.4 a
Mean153.0 C308.2 C177.0 D600.1 C760.6 D

N1UV147.1341.9 b197.9 b682.7916.1 b
C208.3529.7 a243.3 a961.21249.9 a
Mean177.7 BC435.8 B220.6 C821.9 B1083.0 C

N2UV168.8385.2 b206.2 b752.11015.9 b
C237.9633.4 a296.4 a1082.81499.2 a
Mean203.3 B509.3 A251.3 B917.4 B1257.5 B

N3UV197.6456.5 b235.6 b885.31125.6 b
C275.6636.9 a332.3 a1204.51682.8 a
Mean236.6 A546.7 A283.9 A1044.9 A1404.2 A

MeanUV163.3 b367.9 b200.2 b720.8 b931.1 b
C222.0 a532.1 a266.2 a971.3 a1321.5 a

ANOVA

Radiation (R) *** *** *** *** ***
Nitrogen (N) *** *** *** *** ***
R × Nns * * ns *

Lb: leaf biomass; Sb: stem biomass; Gb: grain biomass; UV: high UV-B treatment; C: ambient UV-B treatment; N0, N1, N2, N3: 0, 100, 200, and 300 kg N ha−1.
Means within each N level followed by the same letter (capital letters for N effects within each column) were not significantly different at 𝑃 < 0 . 1 0 . Significance of main effects: ns: not significant; * 𝑃 < 0 . 0 5 , *** 𝑃 < 0 . 0 0 1 .