TABLE 3.

Coefficients of the ANOVAs with the variables assessed in experiment #1.

Experiment #1	${{\mathrm{NO}}_3}^{-}$ (mg/L)	${{\mathrm{NH}}_4}^{+}$ (mg/L)	Soil ${{\mathrm{NH}}_4}^{+}$ (mg/kg)	Soil ${{\mathrm{NO}}_3}^{-}$ (mg/kg)	Plant N content (m/m%)	Wheat yield (g)	SIR (μg CO2‐C/ g soil/h)
	R 2 = .69	R 2 = .20	R 2 = .51	R 2 = .60	R 2 = .61	R 2 = .82	R 2 = .58
Intercept: unfertilized, defaunated, chernozem	2.91***	−2.63***	0.67***	0.43*	0.22***	9.35***	2.70***
Fertilization (fertilized)	2.02***	−0.19	0.68***	1.43***	0.56***	−1.67	1.36**
Fauna (control)	−1.18***	0.58	0.13	0.51	0.31***	22.64***	1.60***
Soil (sandy)	0.52	0.26	0.31**	1.36***	0.63***	−2.98	2.72**
Fauna (control): Soil (sandy)	−0.45	−1.70**	−0.22	−1.18**	−0.56***	16.12**	−2.20***
Fertilization (fertilized): Soil(sandy)	−0.22	0.31	−0.44**	−0.65	−0.44***	0.71	−0.70
Fauna(control): Fertilization (fertilized)	1.91***	0.74	−0.42**	−0.20	−0.40**	−3.39	−2.14***
Fertilized:Control:Sandy	−1.18	−0.34	0.17	−0.01	0.50**	3.35	1.64

Note: Ion concentrations were log‐transformed. Factor levels in brackets are those levels which are compared with the reference level.

Abbreviations: R ², coefficient of determination; SIR, substrate‐induced respiration.

*p < .05, **p < .01; ***p < .001.