Hazardous impact of industrial wastewater utilization on N content (%) in tomato plant. T1 = 100% CW (canal water) irrigation; T2 = 100% WW (wastewater) irrigation; T3 = CW 75% + WW 25%; T4 = CW 50% + WW 50%; T5 = CW 25% + WW 75% and T6 = Cyclic/alternate use of CW and WW.