Heavy metals 21 Days 42 Days
  Mean (mg/kg) Standard deviation Mean (mg/kg) Standard deviation
Fe 260.441 60.155 413.913 163.162
Mn 52.509 9.415 89.532 21.749
Zn 21.112 2.059 52.585 12.326
Cu 0.001 0.000 0.001 0.000
Table 2: Mean levels of heavy metals in treatment two at 21 and 42 days after transplanting.