Physicochemical changes of semiarid soil submitted to treated wastewater, with and without cultivar

This work evaluated the changes in physicochemical attributes semiarid soil submitted to domestic sewage anaerobic treatment, presence or absence of cultivar. The experimental unit was set up rural area Ouro Verde, municipality São Domingos, state Bahia, Brazil. Five treatments were tested by diluting wastewater and supply percentages 0 %, 25 50 75 100 %. Soil samples taken at depths - 35 cm (P1), 70 (P2) from sampling units with cultivar, control without treatment (white). cultivar corn (Zea mays L.), family Poaceae, which has a relatively short cycle (60 120 days). At end experiments, after harvest, presented average Ca, P, K, OM 5% 66 % higher than white, while sample units, 4% 44 higher, due consumption contribution TKN minimum sufficient for Compared Na, SAR, PST, EC 113 P1, 29 – 456 P2, indicates cation P2; change ion distribution exchange site; as well predisposition sodification (increase PST) salinization EC). Consequently, application treated effluents agricultural activity, although it adds nutrients soil, negative effects increase sodicity salinity.