. 2020 Oct 23;11:575861. doi: 10.3389/fpls.2020.575861

TABLE 1.

Soil parameters’ analysis in samples from a field wheat trial under four different conditions collected at 27 weeks after sowing and 12 days after second top dressing application where corresponded.

Parameters^a	Conditions^b
	C1	C2	C3	C4	P_T34^c	P_TD	P_{T34 × TD}
pH	7.81 ± 0.45^a	7.71 ± 0.83^a	8.04 ± 0.43^a	7.07 ± 0.50^a	ns	ns	ns
CaCO₃ (%)	1.05 ± 0.74^a	1.06 ± 0.92^a	1.48 ± 0.96^a	0.27 ± 0.47^a	ns	ns	ns
C (%)	0.54 ± 0.11^a	0.56 ± 0.14^a	0.53 ± 0.17^a	0.59 ± 0.04^a	ns	ns	ns
Organic matter (%)	0.93 ± 0.19^a	0.97 ± 0.25^a	0.91 ± 0.30^a	1.02 ± 0.06^a	ns	ns	ns
N (%)	0.07 ± 0.01^a	0.06 ± 0.01^a	0.07 ± 0.01^a	0.07 ± 0.00^a	ns	ns	ns
C/N ratio	8.27 ± 1.82^a	9.00 ± 1.71^a	7.93 ± 3.15^a	8.17 ± 0.35^a	ns	ns	ns
P (ppm)	21.72 ± 8.55^a	19.06 ± 4.01^a	25.09 ± 2.65^a	19.07 ± 6.11^a	ns	ns	ns

^aFor each parameter, values are means of three plots by treatment (n = 3). Values in the same row with same letter are not significantly different according to Tukey’s test (P > 0.05). ^bThe four conditions, under high basal chemical N fertilization, were as follow: C1, control; C2, two applications of calcium nitrate as top dressing (TD); C3, T. harzianum T34 (T34); and C4, T34 plus two applications of calcium nitrate as TD. ^cSignificant effects were determined by a two-way analysis of variance (ANOVA) for T34, TD, and the interactions between both factors (T34 × TD) (Tukey’s test, P < 0.05). ns, no statistical differences.