Table 6. Bioaccumulation factors for heavy metals in rice crop Parameters UWW TWW GW Fe2+ mg/kg 0.006 0.005 Mn2+ mg/kg 0.74 0.57 0.61 Cu2+ mg/kg 0.76 0.56 0.44 Zn2+ mg/kg 0.29 0.41 0.45 Cd2+ mg/kg 0.78 0.86 0.50 Ni2+ mg/kg 0.20 0.33 0.32 Pb2+ mg/kg 0.43 Co2+ mg/kg 0.53 0.40 Cr2+ mg/kg 0.24 0.23 Mohammed Abdullah Alghobar et al. Effect of Wastewater Irrigation on Growth and Yield of Rice Crop and Uptake and Accumulation of Nutrient and Heavy Metals in Soil. Applied Ecology and Environmental Sciences, 2016, Vol. 4, No. 3, 53-60. doi:10.12691/aees-4-3-1 © The Author(s) 2015. Published by Science and Education Publishing.