Evolution of Soil Biochemical Parameters in Rainfed Crops: Effect of Organic and Mineral Fertilization

Table 4

Summary of the analysis of variance (ANOVA) for soil biological variables over the experiment.

Source of variation	SOM^1			SOMM^2			SMBC^3			CO2 to ATP ratio				NO3-N
	d.f.	M.S.	𝐹	d.f.	M.S.	𝐹	d.f.	M.S.	𝐹	d.f.	M.S.	𝐹
Fertilization (FT)	2	0.12	3.22*	2	4952.73	0.44	2	23063.92	1.42	2	12.60	2.25	2	118.33	7.46**
Sampling date (SD)	10	0.07	2.02*	10	261707.83	23.40**	9	662241.99	40.90**	9	87.53	15.61**	10	766.00	48.29**
FT × SD	20	0.02	0.61	20	7208.98	0.64	18	19833.67	1.22	18	5.28	0.94	20	12.25	0.77
Error	99	0.04		99	11183.04		90	16192.64		90	5.61		99	15.86
Total	131			131			119			119			131

¹SOM: soil organic matter. ²SOMM: soil organic matter mineralization. ³SMBC: soil microbial biomass carbon.
d.f.: degrees of freedom. M.S.: mean square. 𝐹: F-statistic. *Significant at 𝑃<0.05. **Significant at 𝑃<0.01.