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. 2021 May 31;12:650432. doi: 10.3389/fpls.2021.650432

TABLE 3.

Nitrogen accumulation and distribution at the pod set in peanut with four rates of biochar in the 2018 and 2019 growing seasons.

Year Treatment Total kg ha−1 Root
Stem
Leaf
Pod
kg ha−1 % kg ha−1 % kg ha−1 % kg ha−1 %
2018 B0 124 ± 2.8b 3.16 ± 0.28b 2.54 27.1 ± 1.53b 21.8 36.6 ± 1.72b 29.4 57.5 ± 0.92b 46.2
B10 155 ± 7.6a 4.12 ± 0.25a 2.66 32.8 ± 1.04a 21.1 45.4 ± 2.40a 29.3 73.0 ± 4.75a 47.0
B20 143 ± 8.3a 3.89 ± 0.18ab 2.73 30.8 ± 1.25ab 21.6 44.0 ± 2.57a 30.8 64.2 ± 5.87ab 44.8
B40 130 ± 2.0b 3.35 ± 0.19b 2.58 28.4 ± 1.18b 21.9 38.4 ± 2.10b 29.6 59.5 ± 3.15b 45.9
2019 B0 118 ± 6.0b 3.00 ± 0.18b 2.55 25.9 ± 0.83b 22.0 35.0 ± 2.96b 29.7 54.0 ± 3.68b 45.8
B10 146 ± 2.2a 3.90 ± 0.26a 2.67 30.5 ± 1.87a 20.9 43.5 ± 1.17a 29.8 68.2 ± 2.65a 46.7
B20 142 ± 8.4a 3.75 ± 0.28a 2.65 30.0 ± 2.07ab 21.1 43.2 ± 2.78a 30.4 65.1 ± 3.79a 45.8
B40 129 ± 3.5b 3.46 ± 0.10ab 2.69 28.0 ± 1.90ab 21.8 38.8 ± 3.70ab 30.0 58.7 ± 1.28ab 45.6
ANOVA
Y ns ns ns ns ns
B ** ** ** ** **
Y × B ns ns ns ns ns

Y and B represent year and biochar application, respectively. B0, B10, B20, and B40 represent biochar application rates at 0, 10, 20, and 40 t ha−1, respectively. For each parameter in each year, mean data with different letters denote significant difference among treatments at P < 0.05. ∗∗ and denote significance at the 0.01 and 0.05 probability levels, respectively. ns denotes non-significance.