Table 3 Elemental, biochemical and microbiological analysis of initial and final compost samples of both the treatments and its comparison to fertilizer control order (FCO) standard [66]
Parameters | T1 | T2 | Organic compost (FCO 2009)o | ||
|---|---|---|---|---|---|
Day 1 | Day 90 | Day 1 | Day 90 | ||
Elemental analysis (mg/kg dm) | |||||
 Calcium (Ca) | 4133.6 ± 5 | 4236.9 ± 7.64 | 3811.7 ± 16.07 | 6163.3 ± 10.4 | – |
 Magnesium (Mg) | 5147.23 ± 25 | 5127.2 ± 57.5 | 4980.9 ± 22.4 | 5042.2 ± 65.8 | – |
 Manganese (Mn) | 214 ± 2.94 | 292.3 ± 0.86 | 246.6 ± 3.4 | 278.6 ± 5.17 | – |
 Sodium (Na) | 213.98 ± 2.93 | 292.4 ± 0.86 | 246.6 ± 3.4 | 278.6 ± 5.16 | – |
 Iron (Fe) | 11,463.4 ± 104.1 | 12,693.6 ± 58.4 | 9715.9 ± 78.4 | 13,582.6 ± 184.5 | – |
 Zinc (Zn) | 381.8 ± 9.5 | 703.7 ± 0.80 | 335.4 ± 2.13 | 414.2 ± 5.84 | 1000.0# |
 Copper (Cu) | 67.7 ± 1.3 | 96.8 ± 0.7 | 65.2 ± 3.32 | 82.9 ± 1.78 | 300.0# |
 Cadmium (Cd) | nd | nd | nd | nd | 5.0a |
 Lead (Pb) | nd | nd | nd | nd | 100.0# |
 Nickel (Ni) | nd | nd | nd | nd | 50.0# |
 Chromium (Cr) | 7.31 ± 0.38 | 29.5 ± 1.89 | 7.3 ± 0.22 | 17.1 ± 0.9 | 50.0# |
Biochemical analysis (%) | |||||
 Protein | 8.88 ± 0.25 | 12.28 ± 0.75 | 9.94 ± 0.50 | 16.6 ± 0.43 | – |
 Cellulose | 73.7 ± 2.51 | 64.1 ± 1.35 | 76.3 ± 1.52 | 28.7 ± 2.08 | – |
 Hemicellulose | 72.7 ± 3.21 | 42.5 ± 1.32 | 70 ± 2.00 | 18.3 ± 1.57 | – |
 Lignin | 72 ± 2 | 54.7 ± 3.05 | 73.5 ± 1.50 | 50.4 ± 2.20 | – |
Microbiological analysis | |||||
 Total coliform (MPN g−1) |  > 11,000 | 585 |  > 11,000 | 385 | Nil |
 E. coli (CFU g−1) | 0.0054 | 0.0025 | 0.005 | 0.00039 | Nil |
 Salmonella spp. (CFU g−1) | nd | nd | nd | nd | Nil |