Submitted to: Abstract of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: July 1, 2001
Publication Date: November 22, 2001
The IINERT cooperative field study was installed as a cooperative effort by USDA, ARS and U. of MO. The study was installed on a vacant city lot downwind from the former Eagle Pitcher smelting facility. The site was selected based on many factors including total soil Pb concentration, size and long-term accessibility. Soil samples were collected from the site on a grid pattern and analyzed for pH, texture, CEC, % OM as well as for total metals. A composite sample of the soil was processed at the U MO and this composite was used by both cooperators to assess potential treatments for use in the field study. Treatment efficacy was evaluated using a rapid version of a physiologically based extraction procedure (PBET). Reduction in Pb bioavailability over unamended soil was the primary measure of efficacy. Treatments evaluated included P added as Triple Super Phosphate, H3PO4, and hydroxyapatite at rates ranging from 0.1 to 3.2% P. Several municipal biosolids composts including a high Fe, and high Fe + lime material,) added at a 224 Mt ha-1 rate and Fe rich (a by- product of titanium processing) were tested ñ P addition. Materials were incubated with a composite soil slurry for 24 hr to 14 d before extraction. Treatment plots, measuring 2 x 4 m, were installed in the field in the spring of 1997 using a CRD with 4 replicates.