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Table 4 Mean soil organic C stocks ± standard error (Mg/ha) at 0–20, 20–40 and 40–60 cm layers as influenced by region [Eastern (E), Western (W)], and system [shaded (S), unshaded (U)], (n = 12)

From: Carbon storage in Ghanaian cocoa ecosystems

Factor

Treatment

0–20 cm

20–40 cm

40–60 cm

Region

E

40.2 ± 3.4

16.6 ± 3.6

14.3 ± 1.6

W

58.4 ± 3.4

33.3 ± 3.6

25.7 ± 1.6

System

S

45.4 ± 3.4

19.0 ± 3.6

18.5 ± 1.6

U

53.2 ± 3.4

30.9 ± 3.6

21.4 ± 1.6

Region * System

E * S

44.7 ± 4.8

18.2 ± 5.0

17.1 ± 2.2

E * U

35.7 ± 4.8

15.0 ± 5.0

11.5 ± 2.2

W * S

46.1 ± 5.1

19.9 ± 5.4

20.0 ± 2.4

W * U

70.7 ± 4.8

46.7 ± 5.1

31.3 ± 2.2

  1. Age of farms appearing as covariate in the statistical model used
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Carbon Balance and Management

ISSN: 1750-0680

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