Some soil properties of lime stabilized urban wastewater and effects on Barley's yield and mineral matter content

Abstract

Applying lime-stabilized urban wastewater on barley (Hordeum vulgare L.cv. Kaya) has been studied with the two year experiments. The effects of 3-25 ton da-1 wastewater applications were also investigated in these experiments. In addition to these, the effects of different wastewater applications in four doses ranging from 6 to 24 were determined on with the treatment of 20 kg da-1 15:15:15 NPK composed fertilizer. Significantly increases on the P (mg kg-1) and K (mg kg-1) contents of soils and N (g kg-1), P (g kg-1), K (g kg-1), Ca (g kg-1), Fe (mg kg-1), Mn (mg kg-1), Cu (mg kg-1) and Zn (mg kg-1) contents of leaves were observed. Increasing the doses of wastewater applications effected yield components positively. As a result of high dose application, a significant yield increase was also observed. When the wastewater was applied to soil, grain yield and nutrient content of barley increased considerably. There was no negative effect on protein content either. As a conclusion, stabilized wastewater can be used under controlled conditions in agricultural areas. © 2006 Asian Network for Scientific Information.