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Table 6 Chemical parameters of different clustered groups with their min, max, and mean value

From: Assessment of soil quality for agricultural purposes around the Barapukuria coal mining industrial area, Bangladesh: insights from chemical and multivariate statistical analysis

Clusters pH Total nitrogen OM K P S Fe As Cu Ni Total alkalinity
Cluster 1
 Min 4.97 0.06 2.36 0.27 22.8 3.79 1.27 0 1.54 0.1 10
 Max 6.65 0.21 2.63 0.48 44.6 44.52 24.37 0.025 2.138 1.28 100
 Mean 5.67 0.13 2.495 0.35 29.2 20.01 15.13 0.004 1.854 0.49 54.2
Cluster 2
 Min 6.13 0.13 0.58 4.6 15.8 14.26 1.891 0.01 0.837 0.41 85
 Max 6.77 0.15 0.7 9.6 38.4 25.39 2.92 0.01 1.25 0.42 120
 Mean 6.45 0.14 0.58 7.1 29.1 24.83 2.41 0.01 1.04 0.415 102.5
Cluster 3
 Min 5.82 0.07 0.48 0.28 21.3 2.262 7.83 0 0.454 0.54 65
 Max 6.83 0.1 0.68 0.31 25.3 4.32 10.72 0 1.231 0.57 150
 Mean 6.33 0.09 0.58 0.295 23.3 3.29 9.05 0 0.84 0.56 107.5
  1. Italic marks in the table indicate higher value of chemical parameters than the Standard reference value of RSRDIB and bolditalic marks indicate lower value of chemical parameters than the Standard reference value of RSRDIB