Table 6. Soil enzyme activities. Ure, Urease; Pho, Alkali phosphatas; Ary, Aryl sulfatase; Inv, Invertase.

Stage	Sample Type	Pho (mg/g)	Inv (mg/g)	Ure (μg/g)	Ary (μg/g)
Panicle differentiation	H11	0.95 ± 0.06 a	6.27 ± 0.63 a	37.22 ± 1.47 b	50.63 ± 3.56 a
	H12	0.97 ± 0.05 a	7.40 ± 0.74 a	31.36 ± 3.69 a	55.39 ± 6.15 a
	L11	1.24 ± 0.06 b	7.01 ± 0.90 a	36.81 ± 0.12 b	57.93 ± 3.83 a
	L12	1.24 ± 0.09 b	9.79 ± 0.64 b	38.81 ± 2.15 b	56.40 ± 3.00 a
Full-heading	H21	0.97 ± 0.05 a	4.29 ± 0.26 a	40.26 ± 1.82 c	73.21 ± 11.90 a
	H22	0.93 ± 0.04 a	3.99 ± 0.33 a	21.65 ± 4.25 a	71.05 ± 1.12 a
	L21	0.88 ± 0.02 a	3.63 ± 0.27 a	32.71 ± 2.12 b	84.68 ± 9.47 a
	L22	1.12 ± 0.11 b	5.77 ± 3.50 a	43.75 ± 5.25 c	74.04 ± 17.67 a
Maturity	H31	1.05 ± 0.11 ab	7.85 ± 3.38 a	41.93 ± 6.44 b	71.26 ± 16.22 a
	H32	0.96 ± 0.06 a	7.36 ± 2.72 a	42.89 ± 4.20 b	64.08 ± 5.61 a
	L31	1.08 ± 0.07 ab	9.49 ± 2.37 a	31.66 ± 6.15 ab	75.55 ± 15.47 a
	L32	1.16 ± 0.00 b	7.47 ± 2.83 a	27.80 ± 2.48 a	80.87 ± 3.00 a
Background	H40	0.92 ± 0.03	6.04 ± 0.69	34.26 ± 2.98	93.44 ± 2.48
	L40	0.96 ± 0.08	4.09 ± 0.25	31.94 ± 1.04	108.33 ± 6.41
Sample Type (T)		3.047	0.261	0.473	8.826**
Stage (S)		2.931	4.558*	0.088	43.391**
T*S		7.052**	30.208**	26.479**	1.660

¹Values represent the mean (n = 3) with the standard variance (STDEV). Different letters with NSK tests indicate significant differences (p < 0.05) at a single growth stage.

Asterisks indicated the factor significantly explaned the varaition among the sanples (*p < 0.05; **p < 0.01).