This study evaluated the effects of the wastewater of cassava industry, treated by pond system, on the corn crop. The irrigation with wastewater resulted in an increase in chemical parameters of the soil, proportional to the respective treatments in the following order: L1E (effluent of the decantation pond), L1ED (effluent of the pond of decantation with 50% dilution), L2E (effluent of the first anaerobic pond), L2ED (effluent of the first anaerobic pond with 50% dilution), L3E (effluent of the second anaerobic pond), L3ED (effluent of the second anaerobic pond with 50% dilution) and T (control without fertilization and irrigation with water) except for the treatment TA (control with fertilization: 85 kg ha-1 K2O; 60 kg ha-1 N; 100 kg ha-1 P2O5 and irrigation with water:); the height of plant for the treatments varied in the following order: L1E, TA, T which differed significantly followed by L1ED, L2ED and L3ED statistically similar; and L2E and L3E which also showed similar results without significant differences at 5% probability level. The number of leaves did not present significant differences among the evaluated treatments, only the concentrations of phosphorus and zinc in the leaves and roots presented significant differences.
wastewater; cassava industries; reuse; Zea mays L
