Hydrogel and Organic Amendments to Increase Water Retention in Anthroposols for Land Reclamation

Table 1

Chemical properties of substrates and amendments.

Material	Cation exchange capacity (meq·100g^−1)	Electrical conductivity (dS·m^−1)	Soil reaction (pH)	Total organic carbon (%)
Crushed rock	1.0 (0.1)	1.0 (0.0)	7.8 (0.0)	0.1
Lakebed sediment	1.4 (0.1)	4.7 (0.1)	4.6 (0.0)	0.2
Processed kimberlite	9.8 (0.3)	3.8 (0.0)	8.2 (0.0)	0.4
Peat	112.0 (7.0)	0.5 (0.0)	3.9 (0.0)	43.4
Sewage	69.8 (4.7)	5.9 (0.4)	6.1 (0.3)	28.6
Soil	13.3 (0.6)	1.9 (0.1)	4.5 (0.0)	2.7

Data are presented as means with standard errors in brackets (adapted from [17]).