Heavy metals 21 Days 42 Days Mean (mg/kg) Standard deviation Mean (mg/kg) Standard deviation Fe 311.683 109.238 533.026 98.065 Mn 47.192 9.706 88.725 38.137 Zn 22.501 5.482 53.827 4.603 Cu 0.001 0.000 0.001 0.000

Table 3: Mean levels of heavy metals in treatment three at 21 and 42 days after transplanting.