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Table 4 Crookingdue-to-sawing measured in logs and semi-logs under different treatments per tree height of Hieronyma alchorneoides wood from the fast-growth plantation

From: Reduction of growth stresses in logs of Hieronyma alchorneoides Allemão from fast-growth plantations using steaming and heating: effects on the quality of lumber

Tree height (m)

Treatment

Crookingdue-to-sawing in logs (mm)

Crookingdue-to-sawing in semi-logs (mm=

side 1

side 2

side 1

side 2

0.0–2.5

Untreated

72.0A (23.1)

42.2A (40.1)

52.6A (59.4)

39.2A (25.0)

Heatingtreatment

41.4B (25.2)

33.1A (32.0)

38.8A (57.5)

32.2A (26.8)

Steamingtreatment

26.9C (61.2)

19.9B (88.4)

21.7B (78.0)

14.0B (71.2)

2.5–5.0

Untreated

52.0A (31.9)

31.0A (46.2)

56.8A (27.4)

24.3A (133.2)

Heatingtreatment

43.6A (42.8)

28.8A (35.9)

64.2A (62.4)

24.5A (84.2)

Steamingtreatment

24.9B (73.0)

16.3B (79.8)

15.3B (94.4)

19.6A (133.2)

5.0–7.5

Untreated

57.6A (30.3)

43.8A (39.7)

57.5A (72.85)

46.3A (70.0)

Heatingtreatment

49.6A (21.9)

41.3A (25.2)

55.9A (34.88)

26.3AB (36.3)

Steamingtreatment

44.0A (37.1)

23.7B (36.3)

40.7A (13.26)

7.7B (79.4)

7.5–10.0

Untreated

57.6A (24.4)

32.3A (14.9)

78.6A (15.16)

46.0A (57.7)

Heatingtreatment

45.1B (10.5)

36.9A (52.9)

42.1B (24.86)

16.9B (112.3)

Steamingtreatment

18.5C (21.9)

13.0B (26.7)

17.0C (33.96)

4.5C (115.5)

  1. The values in parentheses correspond to the coefficients of variation. Different letters between treatments mean that there are statistical differences (P < 0.05)