Fragipan Horizon Fragmentation in Slaking Experiments with Amendment Materials and Ryegrass Root Tissue Extracts

Table 2

Mean ± SE solution concentrations of Ca, Mg, K, Na, and SSR in the fragipan slaking experiments with the eight amendment treatments over the 30-day experimental period.

Treatment	Ca	K	Mg	Na	SSR
	mg L^−1
D-H2O	0.16 ± 0.08	0.17 ± 0.16	0.01 ± 0.01	0.52 ± 0.17	0.603
CaCO3	0.13 ± 0.05	0.16 ± 0.18	0.01 ± 0.02	1.77 ± 0.88	0.851
FBC	49.95 ± 5.52	0.63 ± 0.10	17.63 ± 2.10	4.94 ± 0.08	0.068
ADB	276.25 ± 7.55	12.75 ± 0.42	76.95 ± 2.55	39.33 ± 3.28	0.097
Poultry manure	73.33 ± 1.89	1852.66 ± 18.27	37.76 ± 1.08	493.0 ± 7.21	0.201
Na-hexa-meta-phosphate	2.16 ± 1.99	0.38 ± 0.02	9.41 ± 8.63	881.90 ± 6.73	0.987
NaF	0.10 ± 0.06	0.15 ± 0.07	0.08 ± 0.03	1055.77 ± 8.40	0.999
Rye root extract	0.67 ± 0.63	3.61 ± 3.08	0.57 ± 0.55	8.03 ± 7.33	0.623