N addition levels

Leaf

Stem

Root

Sb + Lc

Lc + Af

Sb + Lc + Af

Lc + Af

Sb + Lc

Lc + Af

Sb + Lc + Af

Obs

59.7 ± 1.05

53.2 ± 0.68

57.4 ± 0.41

65.6 ± 0.67

66.0 ± 0.30

57.5 ± 0.51

54.5 ± 0.68

N₀

Exp

63.8 ± 2.05

58.0 ± 2.13

60.8 ± 1.78

61.6 ± 0.99^*

60.9 ± 1.17^*

54.5 ± 2.38

58.6 ± 2.29

k

0.880 a

1.231 bc

1.027 c

0.806 b

0.665 c

0.979 c

1.164 a

Obs

58.8 ± 0.89

52.3 ± 1.10

54.8 ± 0.35

65.5 ± 0.61

63.3 ± 0.40

59.1 ± 0.41

60.6 ± 0.56

N₁₅

Exp

61.3 ± 1.13

55.6 ± 0.63^*

57.6 ± 0.74^*

61.6 ± 1.19^*

61.7 ± 1.98

57.1 ± 1.23

60.0 ± 1.26

k

1.008 a

1.347 ab

1.181 b

0.774 b

0.791 a

0.951 cd

0.821 bc

Obs

56.0 ± 0.27

55.1 ± 0.43

54.4 ± 0.22

61.8 ± 0.31

65.1 ± 1.02

60.2 ± 0.29

61.2 ± 0.82

N₃₀

Exp

60.3 ± 0.56^*

53.8 ± 0.42

56.7 ± 0.58^*

60.9 ± 1.51

68.6 ± 0.74^*

64.1 ± 0.57^*

66.1 ± 0.58^*

k

1.125 b

1.158 c

1.077 c

0.945 a

0.651

0.917 d

0.806 c

Obs

60.0 ± 0.77

50.9 ± 0.62

57.9 ± 0.20

66.8 ± 0.14

67.2 ± 0.52

60.0 ± 0.29

59.2 ± 1.53

N₅₀

Exp

61.2 ± 1.12

52.6 ± 2.11

55.9 ± 1.72

61.0 ± 0.86^*

61.7 ± 2.78

55.6 ± 1.46^*

59.0 ± 0.25

k

0.922a

1.449 a

1.048 c

0.757 b

0.668 c

0.995 c

0.861 b

Obs

62.1 ± 0.72

55.8 ± 0.44

52.1 ± 0.54

65.6 ± 0.54

63.9 ± 0.26

56.3 ± 0.16

60.5 ± 0.25

N₁₀₀

Exp

59.4 ± 1.04

55.1 ± 0.91

56.2 ± 0.70^*

61.3 ± 0.83^*

58.7 ± 3.03

56.8 ± 2.08

58.6 ± 2.31

k

0.944 a

1.076 cd

1.396 a

0.818 b

0.746 ab

1.095 b

0.743 d

Obs

60.6 ± 0.31

59.9 ± 0.16

61.9 ± 0.30

65.4 ± 0.66

67.9 ± 0.44

53.0 ± 0.17

61.6 ± 0.72

N₁₅₀

Exp

61.6 ± 0.48

54.5 ± 0.59^*

57.4 ± 0.56^*

63.8 ± 1.29

59.0 ± 1.52^*

54.3 ± 1.50

55.4 ± 1.92^*

k

0.848 a

0.946 d

0.810 d

0.812 b

0.690 bc

1.232 a

0.724 d