The uptakeof some excessive essential elements and cadmium with the crops under wastewater irrigation

The study was performed in the farmer fields in 2005 at Varamin region located in south of Tehran-Iran. The soil is a Shahr-e-Ray Series, Typic Haplogypsids. The investigated crops were sunflower, turnip and forage corn under wastewater irrigation. The experiment was a randomized block design with three replications. The results of experiment showed that the highest concentration of N, P, Zn, Cu were 6.05% ,1.27% ,97.27 ppm ,22.84 ppm in grain and Cd was 0.54ppm in sunflower leaf. The most concentration of K and NO3 were 5.79% and 8.26% in turnip leaf. Finally, the most concentration of Fe and Mn were 335.25 and 114.78 ppm in forage corn root and leaf respectively. Base on the results of this experiment, lands under wastewater irrigation with excessive amount of essential elements and cadmium can cultivate sunflower for uptake excessive content of N, P, Zn, Cu and Cd, turnip for uptake excessive content of K and NO3 and forage corn for uptake excessive content of Fe and Mn without any yield decreased.

Keywords:

Forage Corn , Elements Concentration , Remediation , Sunflower , Turnip