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. 2023 Jun 27;14:1146658. doi: 10.3389/fpls.2023.1146658

Table 4.

Nutrient use efficiency during 2020–2021 and 2021–2022 growing seasons.

Nutrient rates 2020–2021 2021–2022
NUE (kg/kg N) 0 kg N ha−1 0 0
40 kg N ha−1 3.79 ± 0.59 Ba 22.54 ± 1.03 Aa
80 kg N ha−1 2.18 ± 0.37 Bb 11.76 ± 0.66 Ab
120 kg N ha−1 1.53 ± 0.26 Bb 8.16 ± 0.60 Ac
PUE (kg/kg P2O5) 0 kg P2O5 ha−1 0 0
30 kg P2O5 ha−1 5.05 ± 0.69 Ba 29.47 ± 1.69 Aa
60 kg P2O5 ha−1 3.49 ± 0.47 Bb 15.36 ± 0.82 Ab
KUE (kg/kg K2O) 0 kg K2O ha−1 0 0
60 kg K2O ha−1 2.69 ± 0.35 Ba 14.52 ± 0.73 Aa
120 kg K2O ha−1 1.89 ± 0.23 Bb 8.25 ± 0.45 Ab

For each nutrient use efficiency and rate, means followed by the same capital letters are not significantly different at p ≤0.05. For each nutrient use efficiency and growing season, means followed by the same small letters are not significantly different.