Phytoextraction of Pb and Cr As Influnced by Chelating Agent

The screen house experiments were conducted, taking two crop (viz., Zea mays as first crop and Brassica Juncea as subsequent crop), two metal (Pb @ 180 mg kg-1 soil and Cr @ 20 mg kg-1 soil), Five chelating agent (viz., CDTA, CA, DTPA, NTA @ 10 mmol kg-1 soil in case of Zea mays and 3 mmol kg-1 soil in case of subsequent Brassica juncea and FYM @ 3%) in the sewage sludge unamended and amended (@ 3%) soil to evaluate the effects of chelating agents on phytoextraction of these metals. The dry matter yield of roots of Zea mays increased due to FYM and observed trend was CDTACDTA>DTPA>CA>FYM whereas in case of Brassica juncea it was NTA>CA>CDTA>