Heavy metals 21 Days 42 Days Mean (mg/kg) Standard deviation Mean (mg/kg) Standard deviation Fe 281.487 81.089 486.123 90.528 Mn 37.188 6.753 67.129 16.899 Zn 22.099 5.703 51.623 19.755 Cu 0.001 0.000 0.001 0.000

Table 4: Mean levels of heavy metals in treatment four at 21 and 42 days after transplanting.