Table 2.

Average values for some chemical properties of rhizosphere soils used in this study.

Soil	P (mg kg−1)	K (cmol + kg−1)	pH (H2O)	OM (%)	Al sat† (%)	CICE (cmol + kg−1)	Σ basis (cmol (+) kg−1)
1	60.3 ± 0.8a*	2.8 ± 0.1bc	5.9 ± 0.1b	12.2 ± 0.1d	0.6 ± 0.0hij	16.9 ± 0.0e	16.9 ± 0.0e
2	41.5 ± 0.9cd	1.2 ± 0.0f	5.3 ± 0.0f	10.9 ± 0.2e	9.9 ± 0.1c	11.0 ± 0.1h	9.9 ± 0.1i
3	22.2 ± 0.6h	3.0 ± 0.1b	5.8 ± 0.0bc	10.4 ± 0.3ef	0.9 ± 0.1fgh	18.5 ± 0.1d	18.3 ± 0.1d
4	59.8 ± 0.2a	0.6 ± 0.0hi	5.7 ± 0.0bc	15.1 ± 0.1ab	1.1 ± 0.0fg	9.4 ± 0.0i	9.3 ± 0.0i
5	40.1 ± 1.0d	2.6 ± 0.1c	5.7 ± 0.1bc	15.3 ± 0.3a	0.7 ± 0.0fgh	13.9 ± 0.0g	13.8 ± 0.0g
6	22.2 ± 0.1h	0.4 ± 0.0ij	5.4 ± 0.1def	15.9 ± 0.2a	3.3 ± 0.1d	4.8 ± 0.1jk	4.7 ± 0.1j
7	33.1 ± 0.1f	1.2 ± 0.0f	5.7 ± 0.1bc	15.4 ± 0.2a	0.6 ± 0.1ghi	10.9 ± 0.1h	10.8 ± 0.1h
8	53.4 ± 0.1b	9.2 ± 0.1a	6.3 ± 0.0a	13.9 ± 0.2c	0.0 ± 0.0j	28.1 ± 0.2b	28.1 ± 0.2b
9	37.5 ± 0.2e	2.2 ± 0.1d	5.6 ± 0.0cde	10.9 ± 0.3e	2.3 ± 0.0e	11.2 ± 0.2h	11.0 ± 0.2h
10	42.7 ± 0.2c	2.1 ± 0.1de	5.6 ± 0.1cde	14.0 ± 0.3bc	1.2 ± 0.0fg	9.9 ± 0.1i	9.8 ± 0.1i
11	16.1 ± 0.3i	0.8 ± 0.0gh	5.0 ± 0.0g	7.7 ± 0.1g	14.0 ± 0.4a	5.8 ± 0.1j	5.0 ± 0.0j
12	13.5 ± 0.2j	0.2 ± 0.0j	5.0 ± 0.0g	9.6 ± 0.1f	12.5 ± 0.1b	6.3 ± 0.0j	5.5 ± 0.0j
13	5.6 ± 0.4k	0.9 ± 0.0gh	5.6 ± 0.0cd	13.5 ± 0.2c	0.5 ± 0.0hij	15.7 ± 0.1f	15.6 ± 0.1f
14	30.0 ± 0.3g	1.1 ± 0.0fg	6.2 ± 0.1a	6.1 ± 0.3h	0.1 ± 0.0ij	24.8 ± 0.4c	24.7 ± 0.4c
15	16.0 ± 0.3i	0.3 ± 0.0j	6.4 ± 0.1a	15.2 ± 0.2a	0.0 ± 0.0j	29.4 ± 0.3a	29.4 ± 0.3a
16	54.2 ± 0.1b	1.8 ± 0.0e	5.3 ± 0.1ef	7.9 ± 0.3g	0.6 ± 0.0ghi	11.6 ± 0.1h	11.5 ± 0.1h

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

^*Different letters in same column denote significant differences (Tukey's test, P ≤ 0.05).