ABSTRACT
ABSTRACT The results of two years of experiments about irrigation of sorghum, maize and sunflower with municipal wastewater treated by primary sedimentation and high-rate biofiltration are described. Control plots were irrigated with potable water and given commercial fertilizers. Identical crop yields were obtained for the three treatments, which leads to the conclusion that the nitrogen content of wastewater can substitute the nitrogen from commercial fertilizers, subsequent fertilizer savings ranging from US$67/ha up to Us$184/ha. No significant crop composition changes were noticed.
