Table 3 Properties of the manures and residues used (N = > 3 replicates).

From: Terra Preta production from Ghanaian and Zambian soils using domestic wastes

Material

pH

Total C

Total P

Ca

Mg

Na

K

(Water)

(g kg− 1)

(mg kg− 1)

Biochar1

6.6

302

1.6

240

96

269

195

Charcoal

6.8

302

0.3

30

4

6

26

Kitchen leftover

NM

368

0.3

165

35

30

293

Pig manure

NM

334

0.6

1285

219

1310

755

Poultry manure

NM

278

2.5

32

5

6

55

Urine*

9.0

2

34.6

67

64

105

159

Wood ash2

12.7

104

0.2

85

15

8

70

  1. Data source: 1MacCarthy et al. (2020); 2Neina et al. (2020); *Units in mg or g/L; NM: not measured.
Back to article page