TABLE 5.

Soil physic-chemical analysis at harvest time of date palm grown under two water regimes (75 and 25% Field Capacity (FC)) of the tested control (non-amended and no-inoculated) and biofertilizers (composts C1 or C2, arbuscular mycorrhizal fungi (AMF, exogenous AMF1 and native AMF2), and/or plant growth promoting rhizobacteria (PGPR) (B1 or B2). Data are mean ± SE of six biological replicates.

Treatments	pH		EC (mS/cm)		TOC (%)		OM (%)		N (mg/g of soil)		P (ppm)
	75% FC	25% FC	75% FC	25% FC	75% FC	25% FC	75% FC	25% FC	75% FC	25% FC	75% FC	25% FC
Control	7.96 ± 0.05 a	7.88 ± 0.06 ab	0.28 ± 0.01 v–x	0.20 ± 0.01 A	0.40 ± 0.02 v	0.52 ± 0.01 u	0.70 ± 0.03 v	0.89 ± 0.02 u	0.16 ± 0.02 lm	0.06 ± 0.02 m	51.97 ± 1.47 u–w	30.05 ± 1.44 w
B1	7.50 ± 0.07 c–e	7.46 ± 0.02 c–e	0.23 ± 0.00 y–A	0.21 ± 0.01 zA	0.75 ± 0.01 n–s	0.71 ± 0.01 p–t	1.29 ± 0.02 n–s	1.22 ± 0.02 p–t	0.30 ± 0.03 e–k	0.22 ± 0.02 j–l	86.53 ± 5.37 m–t	41.34 ± 1.64 vw
B2	7.38 ± 0.04 c	7.42 ± 0.02 de	0.25 ± 0.01 x–z	0.21 ± 0.01 zA	0.68 ± 0.06 st	0.74 ± 0.02 o–s	1.16 ± 0.10 st	1.28 ± 0.04 o–s	0.30 ± 0.03 e–k	0.22 ± 0.02 j–l	151.48 ± 7.02 c–e	57.97 ± 3.46 s–w
C1	7.46 ± 0.05 c–e	7.56 ± 0.02 c–e	0.30 ± 0.01 s–w	0.31 ± 0.01 r–v	0.87 ± 0.03 e–l	0.83 ± 0.01 h–o	1.51 ± 0.05 e–l	1.43 ± 0.03 h–o	0.24 ± 0.02 j–l	0.34 ± 0.04 b–k	140.04 ± 11.28 c–g	86.59 ± 3.88 m–s
C1+B1	7.44 ± 0.05 c–e	7.54 ± 0.02 c–e	0.39 ± 0.01 h–n	0.39 ± 0.01 h–n	0.94 ± 0.02 b–g	0.90 ± 0.00 e–k	1.62 ± 0.03 b–g	1.55 ± 0.01 e–k	0.34 ± 0.04 b–k	0.22 ± 0.02 j–l	190.18 ± 9.77 b	80.89 ± 1.68 n–u
C1+B2	7.52 ± 0.04 c–e	7.48 ± 0.04 c–e	0.38 ± 0.01 i–o	0.21 ± 0.01 zA	0.92 ± 0.01 d–i	0.84 ± 0.01 g–n	1.58 ± 0.03 d–i	1.46 ± 0.02 g–n	0.32 ± 0.02 c–k	0.25 ± 0.01 j–l	105.63 ± 8.57 h–n	64.06 ± 1.36 q–v
C2	7.42 ± 0.04 de	7.48 ± 0.04 c–e	0.38 ± 0.01 h–o	0.37 ± 0.01 j–p	0.94 ± 0.02 b–g	0.87 ± 0.02 e–l	1.62 ± 0.03 b–g	1.50 ± 0.03 e–l	0.47 ± 0.02 ab	0.28 ± 0.02 g–l	79.43 ± 3.91 n–u	61.90 ± 2.57 r–v
C2+B1	7.52 ± 0.05 c–e	7.58 ± 0.02 c–e	0.32 ± 0.00 q–v	0.31 ± 0.00 r–v	0.95 ± 0.02 b–f	0.84 ± 0.02 g–o	1.64 ± 0.03 b–f	1.44 ± 0.03 g–o	0.35 ± 0.02 a–k	0.21 ± 0.02 kl	96.76 ± 3.17 k–p	71.07 ± 3.07 o–u
C2+B2	7.50 ± 0.04 c–e	7.58 ± 0.04 c–e	0.35 ± 0.01 n–r	0.33 ± 0.01 p–u	0.91 ± 0.02 e–j	0.68 ± 0.01 r–t	1.57 ± 0.03 e–j	1.16 ± 0.03 r–t	0.32 ± 0.02 c–k	0.26 ± 0.02 i–l	100.34 ± 2.42 j–o	69.50 ± 4.30 p–v
AMF1	7.56 ± 0.02 c–e	7.52 ± 0.04 c–e	0.25 ± 0.01 x–z	0.23 ± 0.00 y–A	0.75 ± 0.01 n–s	0.68 ± 0.01 r–t	1.29 ± 0.02 n–s	1.17 ± 0.03 r–t	0.29 ± 0.02 f–l	0.32 ± 0.02 c–k	114.85 ± 5.74 g–m	87.29 ± 4.24 m–s
AMF1+B1	7.64 ± 0.02 b–d	7.56 ± 0.02 c–e	0.25 ± 0.01 x–z	0.27 ± 0.01 w–y	0.70 ± 0.03 p–t	0.78 ± 0.00 l–q	1.21 ± 0.05 p–t	1.35 ± 0.01 l–q	0.39 ± 0.03 a–i	0.34 ± 0.02 b–k	80.54 ± 2.33 n–u	57.87 ± 2.25 s–w
AMF1+B2	7.68 ± 0.04 bc	7.56 ± 0.02 c–e	0.30 ± 0.01 t–w	0.29 ± 0.01 u–x	0.70 ± 0.01 q–t	0.64 ± 0.02 t	1.20 ± 0.01 q–t	1.10 ± 0.04 t	0.32 ± 0.02 c–k	0.28 ± 0.02 g–l	156.47 ± 8.83 cd	126.84 ± 1.00 e–j
AMF1+C1	7.48 ± 0.04 c–e	7.54 ± 0.02 c–e	0.39 ± 0.01 h–o	0.31 ± 0.01 r–w	0.90 ± 0.00 e–j	0.80 ± 0.01 k–p	1.56 ± 0.00 e–j	1.38 ± 0.02 k–p	0.41 ± 0.03 a–g	0.31 ± 0.01 d–k	68.55 ± 1.05 p–v	58.47 ± 3.04 r–w
AMF1+C1+B1	7.50 ± 0.09 c–e	7.48 ± 0.04 c–e	0.45 ± 0.01 d–g	0.34 ± 0.01 o–t	0.97 ± 0.01 a–e	0.77 ± 0.02 m–r	1.67 ± 0.01 a–e	1.32 ± 0.03 m–r	0.31 ± 0.03 d–k	0.25 ± 0.01 j–l	207.15 ± 3.30 ab	74.39 ± 3.45 o–u
AMF1+C1+B2	7.64 ± 0.02 b–d	7.68 ± 0.04 bc	0.41 ± 0.01 g–k	0.32 ± 0.01 q–v	1.07 ± 0.00 a	0.89 ± 0.02 e–k	1.85 ± 0.00 a	1.54 ± 0.04 e–k	0.36 ± 0.03 a–j	0.31 ± 0.01 d–k	86.99 ± 1.47 m–s	57.06 ± 2.51 t–w
AMF1+C2	7.65 ± 0.05 c–e	7.68 ± 0.04 bc	0.49 ± 0.01 cd	0.41 ± 0.01 f–j	0.90 ± 0.01 e–k	1.03 ± 0.01 a–c	1.55 ± 0.02 e–k	1.78 ± 0.01 a–c	0.44 ± 0.02 a–e	0.31 ± 0.02 d–k	127.90 ± 12.23 d–j	58.22 ± 3.26 s–w
AMF1+C2+B1	7.66 ± 0.06 b–d	7.68 ± 0.04 bc	0.55 ± 0.01 b	0.42 ± 0.01 e–i	1.05 ± 0.02 ab	0.93 ± 0.00 c–h	1.80 ± 0.03 ab	1.60 ± 0.01 c–h	0.32 ± 0.02 c–k	0.29 ± 0.02 f–l	149.41 ± 8.46 c–f	87.94 ± 3.18 m–r
AMF1+C2+B2	7.48 ± 0.07 c–e	7.68 ± 0.04 bc	0.45 ± 0.00 d–f	0.40 ± 0.01 h–m	1.02 ± 0.01 a–d	0.82 ± 0.01 i–o	1.77 ± 0.02 a–d	1.41 ± 0.02 i–o	0.31 ± 0.02 a–d	0.29 ± 0.02 f–l	157.48 ± 7.11 c	66.08 ± 3.09 q–v
AMF2	7.60 ± 0.03 c–e	7.66 ± 0.04 b–d	0.35 ± 0.01 m–r	0.32 ± 0.01 q–v	0.53 ± 0.00 u	0.64 ± 0.01 t	0.91 ± 0.00 u	1.10 ± 0.02 t	0.35 ± 0.03 a–k	0.34 ± 0.03 b–k	198.64 ± 8.48 ab	149.41 ± 8.35 c–f
AMF2+B1	7.56 ± 0.05 c–e	7.68 ± 0.04 bc	0.33 ± 0.01 p–u	0.28 ± 0.01 v–x	0.66 ± 0.01 st	0.78 ± 0.01 l–q	1.14 ± 0.02 st	1.35 ± 0.01 l–q	0.45 ± 0.03 a–d	0.31 ± 0 01 d–k	121.65 ± 2.58 f–k	65.12 ± 2.55 q–v
AMF2+B2	7.66 ± 0.04 b–d	7.60 ± 0.03 c–e	0.37 ± 0.01 k–p	0.36 ± 0.01 l–q	0.85 ± 0.02 f–m	0.84 ± 0.01 g–o	1.47 ± 0.04 f–m	1.44 ± 0.03 g–o	0.35 ± 0.03 a–k	0.36 ± 0.03 a–j	108.20 ± 5.69 h–n	83.21 ± 0.96 n–t
AMF2+C1	7.58 ± 0.04 c–e	7.64 ± 0.02 b–d	0.43 ± 0.01 e–h	0.38 ± 0.01 i–o	1.05 ± 0.01 ab	0.75 ± 0.01 n–s	1.80 ± 0.02 ab	1.30 ± 0.02 n–s	0.45 ± 0.02 a–d	0.29 ± 0.02 f–l	82.05 ± 1.52 n–t	62.10 ± 3.00 r–v
AMF2+C1+B1	7.64 ± 0.05 b–d	7.56 ± 0.04 c–e	0.42 ± 0.01 e–i	0.34 ± 0.01 n–s	0.92 ± 0.02 d–i	0.69 ± 0.01 q–t	1.59 ± 0.03 d–i	1.19 ± 0.01 q–t	0.40 ± 0.03 a–h	0.32 ± 0.02 c–k	92.03 ± 2.27 l–q	64.32 ± 1.73 q–v
AMF2+C1+B2	7.66 ± 0.04 b–d	7.52 ± 0.04 c–e	0.48 ± 0.01 cd	0.40 ± 0.01 h–l	0.81 ± 0.01 i–o	0.92 ± 0.02 d–i	1.40 ± 0.01 i–o	1.58 ± 0.04 d–i	0.48 ± 0.02 a	0.32 ± 0.02 c–k	223.33 ± 3.07 a	121.35 ± 6.35 f–l
AMF2+C2	7.54 ± 0.04 c–e	7.58 ± 0.05 c–e	0.65 ± 0.01 a	0.51 ± 0.01 bc	0.85 ± 0.02 f–m	0.90 ± 0.01 e–j	1.47 ± 0.03 f–m	1.55 ± 0.02 e–j	0.43 ± 0.03 a–f	0.32 ± 0.04 c–k	134.55 ± 6.93 c–h	81.90 ± 3.92 n–t
AMF2+C2+B1	7.64 ± 0.02 b–d	7.52 ± 0.04 c–e	0.51 ± 0.01 bc	0.42 ± 0.01 e–i	0.83 ± 0.01 h–o	0.84 ± 0.01 g–n	1.42 ± 0.02 h–o	1.45 ± 0.03 g–n	0.46 ± 0.02 a–c	0.27 ± 0.02 h–l	104.17 ± 3.09 i–n	70.97 ± 4.55 o–u
AMF2+C2+B2	7.68 ± 0.06 bc	7.54 ± 0.04 c–e	0.62 ± 0.01 a	0.46 ± 0.01 de	1.07 ± 0.00 a	0.90 ± 0.02 e–k	1.84 ± 0.01 a	1.55 ± 0.03 e–k	0.36 ± 0.03 a–j	0.26 ± 0.01 i–l	132.43 ± 9.97 c–i	61.90 ± 2.82 r–v

Means followed by the same letters are not significantly different at P < 0.05 (Tukey’s HSD). EC, electrical conductivity; TOC, total organic carbon; OM, organic matter, N, nitrogen concentration; P, phosphorous concentration.