Table 2.

Soil mineral nitrogen and available phosphorus concentrations (mg g^-1 DW).

Soil nutrient	Sample time	CK	I	II	III
NH4-N (mg g-1 DW)	0 day	3.55 ± 0.11a	3.55 ± 0.11a	3.55 ± 0.11a	3.55 ± 0.11a
	3 days	3.35 ± 0.10b	5.57 ± 0.22a	5.57 ± 0.22a	5.57 ± 0.22a
	6 days	3.58 ± 0.16c	6.47 ± 0.19a	5.86 ± 0.20b	5.86 ± 0.20b
	9 days	3.76 ± 0.21c	4.91 ± 0.13b	5.62 ± 0.18a	5.13 ± 0.20b
	12 days	3.80 ± 0.09d	4.52 ± 0.17c	5.32 ± 0.14b	6.23 ± 0.07a
	15 days	3.53 ± 0.05d	3.94 ± 0.08c	5.12 ± 0.33a	5.71 ± 0.16b
	18 days	3.48 ± 0.05c	3.49 ± 0.15c	3.94 ± 0.05b	5.18 ± 0.14a
NO3-N (mg g-1 DW)	0 day	4.91 ± 0.09a	4.91 ± 0.09a	4.91 ± 0.09a	4.91 ± 0.09a
	3 days	4.83 ± 0.18a	3.57 ± 0.09b	3.57 ± 0.09b	3.57 ± 0.09b
	6 days	4.87 ± 0.06a	4.99 ± 0.08a	2.98 ± 0.15b	2.98 ± 0.15b
	9 days	4.72 ± 0.08a	4.97 ± 0.10a	3.14 ± 0.12b	1.90 ± 0.05c
	12 days	4.80 ± 0.12b	5.15 ± 0.03a	3.62 ± 0.05c	2.28 ± 0.13d
	15 days	4.75 ± 0.06a	4.83 ± 0.07a	3.79 ± 0.09b	2.54 ± 0.08c
	18 days	4.79 ± 0.05a	4.72 ± 0.18a	4.13 ± 0.16b	3.10 ± 0.15c
Available P (mg g-1 DW)	0 days	38.2 ± 1.5a	38.2 ± 1.5a	38.2 ± 1.5a	38.2 ± 1.5a
	3 days	37.3 ± 0.5a	29.4 ± 0.8b	29.4 ± 0.8b	29.4 ± 0.8b
	6 days	37.5 ± 0.4a	30.3 ± 1.6b	23.9 ± 0.4c	23.9 ± 0.4c
	9 days	36.9 ± 1.4a	31.5 ± 0.9b	28.0 ± 0.3c	23.9 ± 0.6d
	12 days	38.1 ± 1.6a	33.2 ± 0.6b	28.7 ± 1.3c	25.4 ± 1.7c
	15 days	36.6 ± 1.0a	35.8 ± 0.7a	32.5 ± 0.8b	25.8 ± 1.1c
	18 days	36.8 ± 0.6a	36.1 ± 1.0a	34.8 ± 0.7b	28.3 ± 0.7c

Means with different letters in a line denote a significant difference between treatment groups according to Duncan’s test (P < 0.05). DW denotes plant dry weight.