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Table 1 Soil properties of the experimental field (mean of 2 years)

From: The effect of humic acid and water super absorbent polymer application on sesame in an ecological cropping system: a new employment of structural equation modeling in agriculture

  Total N (%) Available P (ppm) Available K (ppm) EC (dS m−1) pH (saturation extract) C/N ratio OC (%) Bulk density (g cm−3) SP (%) Texture grade
Soil depth (cm)
 0–15 0.076 22 460 1.3 7.3 12.7 0.55 1.45 23.58 Loamy silt
 15–30 0.069 19 446 1.3 7.2 12.3 0.53 1.51 23.88 Loamy silt
  1. EC soil electrical conductivity, OC organic carbon, SP saturation percentage