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Table 1 Descriptive statistics of soil exchangeable K, Mg and K–Mg in the study districts

From: Potassium (K)-to-magnesium (Mg) ratio, its spatial variability and implications to potential Mg-induced K deficiency in Nitisols of Southern Ethiopia

District Descriptive statistics K Mg K–Mg
(Cmol(+)kg−1)
Damot Gale (N = 243) Mean 1.4 1.9 0.7
  SD 0.8 0.6 0.3
  Median 1.1 1.9 0.7
  Minimum 0.1 0.2 0.2
  Maximum 3.9 4.2 1.6
  CV (%) 57 32 40
Damot Sore (N = 216) Mean 1.4 2.3 0.6
  SD 1.0 1.4 0.3
  Median 1.0 2.0 0.6
  Minimum 0.2 0.5 0.1
  Maximum 6.2 9.5 1.5
  CV (%) 71 61 43
Sodo Zuria (N = 330) Mean 1.1 1.8 0.6
  SD 0.7 0.7 0.2
  Median 0.9 1.8 0.6
  Minimum 0.2 0.2 0.1
  Maximum 4.5 4.6 1.3
  CV (%) 64 39 40
Total (N = 789) Mean 1.3 2.0 0.6
  SD 0.9 0.9 0.3
  Median 1.0 1.9 0.6
  Minimum 0.1 0.2 0.1
  Maximum 6.2 9.5 1.6
  CV (%) 69 45 41
  F value *** *** ***
  1. Number in brackets refers to sample size, *** significant at p < 0.001