caa a22 4500 47709435X CHVBK 20180405111523.0 cr unu---uuuuu 170330e19961201xx s 000 0 eng 10.1007/BF01771236 doi (NATIONALLICENCE)springer-10.1007/BF01771236 Influence of fertilizer and sewage sludge compost on yield and heavy metal accumulation by lettuce grown in urban soils [Elektronische Daten] [S. Sterrett, R. Chaney, C. Gifford, H. Mielke] Previous research has demonstrated that many urban soils are enriched in Pb, Cd and Zn. Culture of vegetable crops in these soils could allow transfer of potentially toxic metals to foods. ‘Tanya' lettuce (Lactuca sativa L.) was grown in pots of five urban garden soils and one control agricultural soil to assess the effect of urban-soil metal enrichment, and the effect of soil amendments, on heavy metal uptake by garden vegetables. The amendments included NPK fertilizer, limestone, Ca(H2PO4)2, and two rates of limed sewage sludge compost. Soil Cd ranged from 0.08 to 9.6 mg kg−1; soil Zn from 38 to 3490 mg kg−1; and soil Pb from 12 to 5210 mg kg−1. Lettuce yield on the urban garden soils was as great as or greater than that on the control soil. Lettuce Cd, Zn and Pb concentrations increased from 0.65, 23, and 2.2 mg kg−1 dry matter in the control soil to as high as 3.53, 422 and 37.0 mg kg−1 on the metal-rich urban garden soils. Adding limestone or limed sewage sludge compost raised soil pH and significantly reduced lettuce Cd and Zn, while phosphate fertilizer lowered soil pH and had little effect on Zn but increased Cd concentration in lettuce. Urban garden soils caused a significant increase in lettuce leaf Pb concentration, especially on the highest Pb soil. Adding NPK fertilizer, phosphate, or sludge compost to two high Pb soils lowered lettuce Pb concentration, but adding limestone generally did not. On normally fertilized soils, Pb uptake by lettuce was not exceptionally high until soil Pb substantially exceeded 500 mg kg−1. Comparing garden vegetables and soil as potential sources of Pb risk to children, it is clear that the risk is greater through ingestion of soil or dust than through ingestion of garden vegetables grown on the soil. Urban dwellers should obtain soil metal analyses before selecting garden locations to reduce Pb risk to their children. Chapman & Hall, 1996 Zinc nationallicence copper nationallicence manganese nationallicence iron nationallicence lead nationallicence cadmium nationallicence nickel nationallicence phosphorus nationallicence limestone nationallicence fertilizer nationallicence sewage sludge compost nationallicence Sterrett S. Virginia Polytechnical Institute and State University, Eastern Shore Agricultural Research Station, Rt. 1, Box 133, 23420, Painter, VA, USA aut Chaney R. Environmental Chemistry Laboratory, USDA-Agricultural Research Service, Building 007, BARC-West, 20705, Beltsville, MD, USA aut Gifford C. Eastwood Animal Clinic, 05701, Rutland, VT, USA aut Mielke H. College of Pharmacy, Xavier University of Louisiana, 7325 Palmetto Street, 70125, New Orleans, LA, USA aut Environmental Geochemistry and Health Kluwer Academic Publishers 18/4(1996-12-01), 135-142 0269-4042 18:4<135 1996 18 10653 https://doi.org/10.1007/BF01771236 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01771236 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sterrett S. Virginia Polytechnical Institute and State University, Eastern Shore Agricultural Research Station, Rt. 1, Box 133, 23420, Painter, VA, USA aut NATIONALLICENCE 700 1- Chaney R. Environmental Chemistry Laboratory, USDA-Agricultural Research Service, Building 007, BARC-West, 20705, Beltsville, MD, USA aut NATIONALLICENCE 700 1- Gifford C. Eastwood Animal Clinic, 05701, Rutland, VT, USA aut NATIONALLICENCE 700 1- Mielke H. College of Pharmacy, Xavier University of Louisiana, 7325 Palmetto Street, 70125, New Orleans, LA, USA aut NATIONALLICENCE 773 0- Environmental Geochemistry and Health Kluwer Academic Publishers 18/4(1996-12-01), 135-142 0269-4042 18:4<135 1996 18 10653 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer