Table 1A.

Chemical properties of rhizosphere soils used in this study (n = 3).

Soil	P (mg kg-1)	K (cmol+ kg-1)	pH (H2O)	OM (%)	Al sat† (%)	CICE (cmol+ kg-1)	ΣΣ basis (cmol(+)kg-1)
1	60.3 ± 0.8a∗	2.8 ± 0.1a	5.9 ± 0.1a	12.2 ± 0.1d	0.6 ± 0.0c	16.9 ± 0.0a	16.9 ± 0.0a
2	41.5 ± 0.9cd	1.2 ± 0.0b	5.3 ± 0.0b	10.9 ± 0.2d	9.9 ± 0.1a	11.0 ± 0.1c	9.9 ± 0.1c
4	59.8 ± 0.2a	0.6 ± 0.0d	5.7 ± 0.0ab	15.1 ± 0.1a	1.1 ± 0.0b	9.4 ± 0.0d	9.3 ± 0.0c
13	5.6 ± 0.4k	0.9 ± 0.0c	5.6 ± 0.0c	13.5 ± 0.2b	0.5 ± 0.0c	15.7 ± 0.1b	15.6 ± 0.1b

^†Calculated as Al/cation exchange capacity [ΣΣ (K, Ca, Mg, Na, and Al)] × 100, n =3.

^∗Different letters in the same column denote significant differences (Tukey’s test, P ≤ 0.05).