Table 1: (a) Baseline preplanting soil properties of the experimental site before fertilizer application. (b) Effect of nitrogen fertilizer rates (control–0, 50, 100, 150, and 200 kg ha−1) on postplanting soil properties (Mean ± SD).
(a)

Baseline soilMoisture content %Organic carbon %Carbon / NitrogenAvailable phosphorus mg kg−1pH H2OSodium cmol kg −1Potassium
cmol kg−1
Magnesium
cmol kg−1
Calcium
cmol kg−1
Acidity
cmol kg−1
ECEC
cmol kg−1
Total nitrogen %
11.32.1613295.420.350.474.2318.080.4123.540.17

(b)

Nitrogen fertilizer rates kg ha−1Moisture content %Organic carbon %Carbon / NitrogenAvailable phosphorus mg kg−1pH H2OSodium cmol kg−1Potassium
cmol kg−1
Magnesium
cmol kg−1
Calcium
cmol kg−1
Acidity cmol kg−1ECEC
cmol kg−1
Residual nitrogen %

Control–011.5 ± 1.9a2.8 ± 0.3a15.5 ± 3.1a19.7 ± 4.2a5.4 ± 0.4a0.18 ± 0.06b1.5 ± 0.5a3.4 ± 0.8a15.4 ± 3.5a0.09 ± 0.05a20.5 ± 3.9a0.01 ± 0.02e
5011.2 ± 2.1a2.9 ± 0.3a12.0 ± 0.8ab21.3 ± 4.0a5.4 ± 0.3a0.17 ± 0.06b1.4 ± 0.3a3.6 ± 1.0a17.4 ± 3.9a0.08 ± 0.03a22.6 ± 5.1a0.08 ± 0.01d
10015.1 ± 0.4a2.6 ± 0.2a9.3 ± 1.0bc20.8 ± 2.9a5.3 ± 0.3ab0.18 ± 0.07b1.2 ± 0.4a3.6 ± 0.9a16.3 ± 3.4a0.08 ± 0.02a21.4 ± 4.2a0.12 ± 0.01c
15015.4 ± 1.0a3.0 ± 0.7a9.0 ± 2.4bc26.0 ± 5.5a5.0 ± 0.4ab0.31 ± 0.03a1.3 ± 0.5a3.3 ± 0.8a14.9 ± 2.9a0.08 ± 0.02a19.8 ± 3.9a0.16 ± 0.01b
20015.2 ± 1.2a2.6 ± 0.1a7.3 ± 0.5c24.3 ± 1.5a4.7 ± 0.1b0.22 ± 0.05ab1.3 ± 0.1a4.1 ± 0.4a18.7 ± 2.1a0.12 ± 0.07a24.5 ± 2.6a0.19 ± 0.01a

Values within columns with different letters are significantly different (P < 0.05).