Table 4 Soil chemical properties and pH of different treatments.

From: Combining organic fertilizer with soil conditioner alleviates continuous cropping obstacles in protected cowpea by improving soil properties and microbiome

Treatment

pH

Total nitrogen (TN), g/kg

Available nitrogen (AN), mg/kg

Available phosphorus (AP), mg/kg

Organic matter (OM), g/kg

Available potassium (AK), mg/kg

Slowly available potassium (SK), mg/kg

Electrical conductivity (EC), µS/cm

FO-10 d

7.86 ± 0.03 A

0.78 ± 0.04 C

51.24 ± 2.12 C

18.99 ± 1.24 B

9.08 ± 0.12 C

512.23 ± 8.59 C

617.31 ± 3.15 D

551.00 ± 3.00 C

FO-40 d

7.89 ± 0.05 A

0.84 ± 0.04 BC

43.34 ± 2.34 C

18.15 ± 1.43 B

10.28 ± 0.22 C

493.98 ± 9.44 D

632.68 ± 2.36 C

848.00 ± 5.00 A

FO-70 d

7.99 ± 0.04 A

0.89 ± 0.03 AB

44.51 ± 3.84 C

20.07 ± 1.5 B

10.65 ± 0.30 C

411.78 ± 3.37 E

605.92 ± 3.02 E

624.00 ± 6.00 B

FOS-10 d

7.45 ± 0.02 B

0.95 ± 0.04 A

76.44 ± 4.60 B

21.13 ± 2.17 B

13.76 ± 0.15 B

537.68 ± 6.16 B

614.28 ± 2.88 DE

503.00 ± 7.00 D

FOS-40 d

7.46 ± 0.06 B

0.94 ± 0.04 A

80.65 ± 4.78 B

27.53 ± 1.67 A

17.78 ± 0.19 A

563.92 ± 3.23 A

729.85 ± 4.25 A

618.00 ± 4.00 B

FOS-70 d

7.55 ± 0.07 B

0.97 ± 0.03 A

90.79 ± 2.24 A

27.37 ± 4.18 A

15.08 ± 0.17 AB

548.57 ± 2.45 AB

658.17 ± 3.92 B

475.00 ± 6.00 E

  1. FO-10 d, FO-40 d and FO-70 d are soil samples from the FO groups taken during the seedling stage, vegetative growth stage, and harvest stage, respectively; FOS-10 d, FOS-40 d and FOS-70 d are soil samples from the FOS groups taken during the seedling stage, vegetative growth stage, and harvest stage, respectively. Statistical significance was set at a level of p < 0.05 using Duncan’s multiple range tests. The same letter in table represents no significant difference.
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