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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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