Chemical and physical properties of coir.
Link to this table

Property Range found in literature1 Median value from literature
Total phosphorus (% dry wt) 0.036 - 0.41 0.036
Total nitrogen (% dry wt) 0.24 - 0.5 0.45
Total potassium (% dry wt) 0.4 - 2.39 0.819
Total carbon (%) 42 - 49 47.1
Total hydrogen (%) 4.4
pH 4.9 - 6.9 5.9
Cation exchange capacity (cmol/kg) 31.7 - 130 50
Electrical conductivity (ds/m) 39 - 2900 582
Total calcium (%) 0.18-0.47 0.40
Total magnesium (%) 0.11-0.47 0.36
Total copper (mg/kg) 3.1-10.3 4.2
Total zinc (mg/kg) 4.0-9.8 7.5
Total manganese (mg/kg) 12.5-92 17
Bulk density (g/cm3) 0.025 - 0.132 0.06
Water holding capacity (% by wt) 137 - 1100 566
Total pore space (%) 85.5 - 98.3 95.2

Primary references for this data:

  • Cresswell
  • Abad et al., 2002
  • Abad et al., 2005
  • Asiah et al., 2004
  • Kumar et al., 2010
  • Lodolini et al., 2017
  • Shrestha et al., 2019

This page was last modified on 19 February 2020, at 08:54.

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