Table 4. Mineral nutrients concentration of vermicast-sawdust mixed media without (A) and with (B) addition of Trichoderma viride during a 90-day incubation period.
| Growing Medium | N (%) | EC (μS/cm) | Ca (mg/l) | K (mg/l) | Mg (mg/l) | P (mg/l) | Na (mg/l) | SO42- (mg/l) | Cl- (mg/l) | B (mg/l) |
|---|---|---|---|---|---|---|---|---|---|---|
| A1 | 0.9a | 3400a | 136.4a | 353.6a | 97.8a | 22.4a | 234.3a | 303.7a | 405.5a | ND |
| A2 | 0.8b | 2400b | 84.7b | 274.9b | 57.5b | 18.9a | 156.8b | 184.3b | 310.0b | ND |
| A3 | 0.5c | 1600bc | 52.3bc | 215.3bc | 34.1bc | 14.4b | 97.6c | 132.7bc | 286.0b | 0.10b |
| A4 | 0.4d | 1100cd | 42.3bc | 199.4c | 23.8bc | 12.0b | 61.8d | 107.1cd | 150.3c | 0.13b |
| A5 | 0.2e | 600d | 14.4c | 166.9c | 4.3c | 6.7c | 12.1e | 38.6d | 24.0d | 0.23a |
| B1 | 1.0a | 3500a | 128.2a | 356.3a | 90.5a | 20.0a | 223.1a | 273.1a | 453.3a | ND |
| B2 | 0.8b | 2500b | 93.7ab | 306.0b | 61.4ab | 18.9ab | 171.9b | 193.1b | 405.5a | 0.10c |
| B3 | 0.6c | 1600c | 65.7b | 237.2c | 42.0bc | 16.2bc | 115.2c | 156.7bc | 286.0b | 0.11bc |
| B4 | 0.4d | 1100cd | 50.3bc | 213.9c | 27.9cd | 12.7c | 69.1d | 116.5c | 107.2c | 0.12b |
| B5 | 0.2e | 500d | 15.5c | 166.3d | 4.6d | 6.6d | 11.8e | 34.4d | 19.0d | 0.25a |
Means that do not share the same letter are significantly different at P<0.05. ND, data were not detected; n = 3 per experimental replicate.
A1, B1 are 80%vermicast+20%sawdust; A2, B2 are 60%vermicast+40%sawdust; A3, B3 are 40%vermicast+60%sawdust; A4, B4 are 20%vermicast+ 80%sawdust; and A5, B5 are sawdust alone.
EC is electric conductivity; N is nitrogen; Ca, calcium; K is potassium; Mg is magnesium; P is phosphorus; Na is sodium; SO42- is sulphate; Cl- is chloride; and B is boron.