Table 1 Trees sampled and mean root growth metrics at year 5

5

292.8 (71.4)^d

2.69 (0.27)^f

158.82 (43.33)^de

0.33 (0.02)^ab

2937.5 (1118.8)^f

0.33 (0.05)^abc

10

28.1 (2.6)^a

0.90 (0.07)^a

20.62 (3.17)^a

0.21 (0.01)^a

156.8 (26.8)^a

0.44 (0.04)^c

8

51.9 (6.4)^ab

1.48 (0.21)^bc

40.33 (13.10)^abc

0.26 (0.02)^ab

467.8 (143.9)^abcd

0.31 (0.02)^abc

10

44.6 (4.4)^ab

1.99 (0.19)^cde

79.72 (16.81)^abcd

0.31 (0.06)^ab

859.7 (266.6)^abcde

0.40 (0.04)^bc

10

121.3 (8.1)^c

2.24 (0.09)^def

101.28 (10.08)^bcd

0.45 (0.03)^c

2699.3 (394.6)^f

0.24 (0.03)^a

8

60.7 (8.4)^ab

2.30 (0.22)^ef

130.95 (24.70)^abcd

0.33 (0.03)^ab

1343.2 (358.5)^abcde

0.32 (0.03)^abc

9

43.9 (4.2)^ab

1.07 (0.09)^ab

46.30 (8.58)^abc

0.30 (0.02)^ab

311.8 (55.4)^ab

0.34 (0.04)^abc

10

55.7 (2.2)^ab

2.34 (0.17)^def

118.78 (13.26)^cd

0.27 (0.03)^ab

1216.4 (157.5)^abcde

0.31 (0.02)^abc

10

61.0 (2.5)^ab

3.16 (0.12)^g

197.35 (21.60)^e

0.28 (0.02)^ab

1545.4 (147.8)^bde

0.36 (0.03)^abc

10

72.4 (6.9)^ab

1.72 (0.21)^cd

103.52 (17.28)^abcd

0.37 (0.05)^bc

1317.8 (263.8)^abcde

0.28 (0.03)^ab

10

85.2 (6.8)^b

2.62 (0.16)^f

159.64 (39.86)^de

0.38 (0.04)^bc

1816.5 (352.9)^e

0.35 (0.03)^abc

5

34.4 (3.0)^ab

1.47 (0.27)^bc

24.43 (4.73)^ab

0.28 (0.01)^ab

319.1 (65.3)^abc

0.24 (0.01)^a