Two Star | |||
C (%) | SO4-S (%) | Fe (ppm) | |
Control | 38.69 a | 0.14 c | 96.4 |
UV-A | 39.00 a | 0.17 b | 111.1 |
UV-B | 37.54 b | 0.19 b | 100.0 |
UV-AB | 37.62 b | 0.21 a | 150.3 |
Significance | ** | *** | NS |