1. Adamo, P., Denaix, L., Terribile, F., and Zampella, M. 2003. Characterization of heavy metals in contaminated volcanic soils of the Solofrana river valley (southern Italy). Geoderma 117: 347- 366.
  2. Afyuni, M., and Schulin, R. 2002. Repetitive and Residual Effects of Sewage Sludge Application on Extractability and Plant Uptake of Cu, Zn, Pb and Cd.  12th ISCO Conference. Dept. of Soil Science, College of Agriculture Isfahan University of Technology Isfahan.250-255.
  3. Ahmed, H. Kh., Fawy, H.A., and Abdel-Hady. E.S. 2010. Study of sewage sludge use in agriculture and its effect on plant and soil. Agriculture and Biology Journal of North America, 1(5): 1044-1049.
  4. Alloway, B.J. 2008. Zinc in Soils and Crop Nutrition. Second edition, published by International Zinc Association (IZA) and International Fertilizer Industry Association (IFA).
  5. Alloway, B.J. 1995. Heavy Metals in Soils, Blackie Academic and Professional, Glasgow. 368 p.
  6. Almas, A.R., McBride, M.B., and Singh, B.R. 2000. Solubility and lability of cadmium and zinc in two soils treated with organic matter. Soil Science, 165:250–259.
  7. Antoniadis, V., Tsadilas, C.D., and Samaras, V. 2010. Trace element availability in a sewage sludge– amended cotton grown Mediterranean soil. Chemosphere, 80:1308–1313.
  8. Arvas, S., Keskin, B., and Hakkı Yilmaz, I. 2013. Effect of sewage sludge on metal content of grassland soil and herbage in semiarid lands. Turkish Journal of Agriculture and Forestry, 37: 179-187.
  9. Benton, J., and Case, V.W. 1990. Sampling handing and analyzing plant tissue samples. In: Westerman, R.L.(ed.), Soil testing and plant analysis. 3rded. Book series No.3. Soil Science Society of America, Inc. Madison, WI., USA. pp:389-428.
    1. Bergkavist, P., Jarvis, N., Berggren, D., and Carlgren, K. 2003. Long term effects of sewage sludge applications on soil properties, cadmium availability and distribution in arable soil. Agriculture, Ecosystems & Environment, 97: 167-179.
    2. Boustani, H. R., and Ronaghi, A. 2014. Chemical Forms and Bioavailability of Zinc in two calcareous soils and relation of these forms with Zn concentration in Zea mays affected with Sewage Sludge application. Iranian Journal of Soil Research. 28(2): 363-374. (in Persian with English abstract).
    3. Brunetti, G., Karam, F., Rovira, P.S., Nigro, F., and Sensi, N. 2011. Greenhouse and field studies on cr, cu, pb and zn phytoextraction by brassica napus L. from contaminated soils in the Apulia region, southern Italy. Geoderma, 160: 517-523.
    4. Chaignon, V. Sanchez-Neira, I. Herrmann, P. Jaillard, B., and Hinsinger, P. 2003. Copper bioavailability and extractability as related to chemical properties of contaminated soils from a vine-growing area. Environmental Pollution, 123: 229–238.
    5. Chaney, R.L. 1989. Scientific analysis of proposed sludge rule. Biocycle, 30: 80-85.Chapman, H. D. 1965. Cation exchange capacity. In Black C. A. et al.(eds.). Methods of soil analysis. ASA.Madison, WI. pp: 891-901.
    6. Chapman, H.D. 1965. Cation exchange capacity. In: Black, C.A (ed.), Methods of soil analysis, Part 2. Am. Soc. Agron. Madison, WI. pp: 891-901.
    7. Cheng, H.F., Xu, W.P., Liu, J.L., Zhao, Q.J., He, Y.Q. and Chen, G. 2007. Application of composted sewage sludge (CSS) as a soil amendment for turfgrass growth. Ecological Engineering, 29: 96-104.
    8. Day, P.R. 1955. Particle fractionation and particle-size analysis. In: Black, C.A. (Ed), Methods of soil analysis. Part 1. Agronomy 9, Soil Sci. Soc. Am. Madison, WI. pp: 545-567.
    9. Gupta, A.K., and Sinha, S. 2006. Chemical fractionation and heavy metal accumulation in the plant of Sesamum Indicum (L.) Var. Tss grown on soil amended with tannery sludge: Selection of single extraction. Chemosphere, 64: 161-173.
    10. Heemsbergen, D.A., Warne, M.S.J., Broos, K., Bell, M., Nash, D., McLaughlin, M.J., Whatmuff, M., Barry, G.D., Pritchard, D., and Penney, N. 2009. Application of phytotoxicity data to a new Australian soil quality guideline framework for biosolids. Science of The Total Environment, 407: 2546–2556.
    11. Hosseinpur, A. and Motaghian, H. R. 2014. Effect of Sewage Sludge Application and Wheat (Triticum aestivum L.) Planting on Availability and Fractionation of Zinc in some Calcareous Soils. Journal of Water and Soi. 27(6):1100-1110. (in Persian with English abstract).
    12. Hossner, L.R. 1996. Dissolution for total elemental analysis. In: Methods of soil analysis. Sparks, D.L. (Ed.). ASA and SSSA. Madison, WI. pp: 49-64
    13. Hseu, Z.H. 2006. Extractability and bioavailability of zinc over time in three tropical soils incubated with biosolids. Chemosphere, 63:762-771.
    14. Kabata-Pendias, A. 1995. Agricultural Problems Related to Excessive Trace Metal Contents of Soils. In: Heavy Metals. U. Förstner et al. (eds.), Springer-Verlag Berlin Heidelberg.
    15. Kabata-Pendias, A., and Pendias, H. 2001. Trace Elements in Soils and Plants, 3rd ed., CRC Press, Bocaraton, London, New York. 403p.
    16. Karami, M., Afyuni, M., Rezaee Nejad, Y., and Khosh Goftarmanesh, A. 2009. Cumulative and Residual Effects of Sewage Sludge on Zinc and Copper Concentration in Soil and Wheat. . Journal of Water and Soil Science, 12 (46):639-654 (in Persian with English abstract).
    17. Khadivi Broujeni, E. 2007. Effect of organic manure on heavy metal fraction in soil and uptake by wheat. MSc thesis. Faculty of Agriculture, Isfahan University of Technology, Isfahan, Iran. (in Persian with English abstract).
    18. Latare, A.M., Kumar,O.,Singh, S.K., and  Gupta, A. 2014. Direct and residual effect of sewage sludge on yield, heavy metalscontent and soil fertility under rice–wheat system. Ecological Engineering. 69: 17–24.
    19. Lavado, R.S., Rodrı´guez, M.B., and Taboada, M.A. 2005. Treatment with biosolids affects soil availability and plant uptake of potentially toxic elements. Agriculture, Ecosystems and Environment 109:360–364.
    20. Lindsay, W.L. and Norvell, W.A. 1978. Development of DTPA soil test for zinc, iron, manganese and copper. Soil Science Society of America Journal, 46: 260-264.
    21. Luo, Y.M. and Chirstie, P. 1998. Bioavailability of copper and zinc in soil treated with alkaline stabilized sewage sludge. Journal of Environmental Quality, 27: 335-342.
    22. Miao-miao, H.E., Guang-ming, T., Xing-qiang, L., Yi-tong, Yu., Jian-yang, W., and Gen-di, Zh. 2007. Effects of two sludge application on fractionation and phytotoxicity of zinc and copper in soil. Journal of Environmental Sciences,19:1482-1490.
    23. Motaghian, H.R., and Hosseinpour., A. 2013. Assessment of Several Extractants for the Determination of Zinc Bioavailability to Bean (Phaseolus vulgaris L.) in Calcareous Soils Amended and Unamended with Sewage Sludge. Journal of Water and Soil, 27(4): 742-752. (in Persian with English abstract).
    24. Motaghian, H.R., Hosseinpur, A., Raiesi, F., and Mohammadi, J. 2013. Relationship between Zinc Fractions and Wheat (Triticum Aestivum L.) Responses in Some Calcareous Soils Amended and Unamended with Sewage Sludge. Journal of Water and Soil Science, 17 (65):185-198. (in Persian with English abstract).
    25. Nada, E., Ferjani, B. A, Ali, R, Bechir, B. R, Imed, M., and Makki, B. 2007. Cadmium induced growth inhibition and alteration of biochemical parameters in almond seedlings grown in solution culture, Acta Physiologiae Plantarum, 29: 57-62.
    26. Nazari, M.A. Shariatmadari, H., Afyuni, M., Mobli, M., and Rahili, Sh. 2006. Effect of Industrial Sewage-Sludge and Effluents Application on Concentration of Some Elements and Dry Matter Yield of Wheat, Barley and Corn. Journal of Water and Soil Science, 10 (3):97-111. (in Persian with English abstract).
    27. Nelson, D.W., and Sommers, L.E. 1982. Total carbon, organic carbon, and organic matter. In Page, A.L. et al. (ed.) Methods of soil Analysis. Part 2. 2nd ed. Agron. Monogr. 9. ASA and SSSA, Madison, WI. pp: 539–580.
    28. Nelson, R.E. 1982. Carbonate and gypsum. In: Page, A.L. et al. (ed.)., Methods of soil analysis, Part 2, 2nd ed. SSSA, Agronomy Monograph, Madison, WI, pp:181-197.
    29. Ngole, V.M. and  Ekosse, G.E.  2009. Zinc uptake by vegetables: Effects of soil type and sewage sludge. African Journal of Biotechnology, 8 (22): 6258-6266.
    30. Nogueira, T.A.R., Franco, A., He, Z. Braga, V.S., Firme, L.P., and Abreu-Junior, C. H. 2013. Short-term usage of sewage sludge as organic fertilizer to sugarcane in a tropical soil bears little threat of heavy metal contamination. Journal of Environmental Management, 114:168-177.
    31. Orman, S., OK, H., and Kaplan, M. 2014. Application of sewage sludge for growing Alfalfa, its effects on the macro-micronutrient concentration, heavy metal accumulation, and translocation. Ekoloji. 23(90): 10-19.
    32. Ortiz, O. and Alcaniz, J.M., 2006. Bioaccumulation of heavy metals in Dactylis glomerata L. growing in a calcareous soil amended with sewage sludge. Bioresource Technology 97: 545–552.
    33. Pandey, N, Pathak, G.C, Pandey, D.K, and Pandey, R. 2009. Heavy metals, Co, Ni,Cu, Zn and Cd, produce oxidative damage and evoke differential antioxidant responses in spinach. Brazilian Society of Plant Physiology, 21:103-111.
    34. Pascual, I., Antolı´n, M.C., and Sa´nchez-Dı´az, M. 2004. Plant availability of heavy metals in a soil amended with a high dose of sewage sludge under drought conditions Biology and Fertility of Soils, 40: 291–299.
    35. Pavlíková, D.  Pavlík, M., Staszková, L., Tlustoš, P., Száková, J., and Balík, J. 2007. The effect of potentially toxic elements and sewage sludge on the activity of regulatory enzyme glutamate kinase. Plant soil and environment, 53(5): 201-206.
    36. Rahimi Alashty, S., Bahmanyar, M.A., and Ghajar Sepanlou, M. 2011. The effects of sewage sludge application on pH, EC, O.C, Pb and Cd in soil and lettuce and radish plants. Journal of Water and Soil Conservation, 18(3):133-147. (in Persian with English abstract).
    37. Ramachandran, V. and D’Souza, T.J. 1998. Plant uptake of cadmium, zinc, and manganese in soils amended with sewage sludge and city compost. Bulletin of Environmental Contamination and Toxicology, 61:347-354.
    38. Ramos. L., Hernandez, M., and Gonzalez, M.J. 1994. Sequentional of copper, lead, cadmium and zinc in soils, from or near Donadona National Park. Journal of Environmental Quality, 23: 50-57.
    39. Ramulu, U. and Sree, S. 2002. Reuse of municipal sewage and sludge in agriculture. Scientific Publishers, Jodhpur, India.
    40. Sadeghzadeh, B. and Rengel, Z. 2001. Zinc in Soils and Crop Nutrition. In :The Molecular and Physiological Basis of Nutrient Use Efficiency in Crops, First Edition. M. J. Hawkesford,(ed.) Peter Barraclough. John Wiley and Sons,Inc.
    41. Samaras, V., Tsadilas, C.D., and Stamatiadis, S. 2008. Effects of Repeated Application of Municipal Sewage Sludge on Soil Fertility, Cotton Yield, and Nitrate Leaching. Agronomy Journal, 100: 3. 477-483.
    42. Shaheen, S.M., Shams, M.S., Elbehiry, F.A., and Ibrahim, S.M. 2012. Influence of Stabilized Biosolids Application on Availability of Phosphorus, Copper, and Zinc. Applied and Environmental Soil Science, Article ID 817158, 11 pages. doi:10.1155/2012/817158
    43. Sharifi, M., Afyuni, M., and Khoshgoftarmanesh, A. H. 2011. Effects of Sewage Sludge, Compost and Cow Manure on Availability of Soil Fe and Zn and their Uptake by Corn, Alfalfa and Tagetes Flower. Journal of Water and Soil Science, 15 (56):141-154.  (in Persian with English abstract).
    44. Shober, A.L., Stehouwer, R.C., and MacNeal, K.E. 2007. Chemical fractionation of trace elements in biosolid-amended soils and correlation with trace elements in crop tissue. Communications in Soil Science and Plant Analysis, 38: 1029–1046.
    45. Shrivastava, S.K. and Banerjee, D.K. 2004. Speciation of metals in sewage sludge and sludge-amended soils. Water Air, Soil Pollution, 152: 219–232.
    46. Singh, R.P. and Agrawal, M. 2007. Effects of sewage sludge amendment on heavy metal accumulation and consequent responses of Beta vulgaris plants. Chemosphere, 67: 2229-2240.
    47. Singh, S., Saxena, R., Pandey, K., Bhatt, K., and Sinha, S. 2004. Response of antioxidants in sunflower (Helianthus annuus L.) grown on different amendments of tannery sludge: its metal accumulation potential. Chemosphere, 57: 1663-1673
    48. Singh, S., Zacharias, M., Kalpana, S., and Mishra. S. 2012. Heavy metals accumulation and distribution pattern in different vegetable crops.  Journal of Environmental Chemistry and Ecotoxicology. 4(10): 170-177.
    49. Su, D.C. and Wong, W.C. 2003. Chemical speciation and phytoavailability of Zn, Cu, Ni, and Cd in soil amended with fly ash-stabilized sewage sludge. Environment International, 29:895-900.
    50. Tessier, A., Campbell, P.G.C., and Bission, M. 1979. Sequential extraction procedure for the speciation of particulate traces metals. Analytical chemistry, 51: 844-851.
    51. Tlustos P., Balik J., Dvorak P., Szakova J., and Pavlikova D. 2001. Zinc and lead uptake by three crops planted on different soils treated by sewage sludge. Rostlinna Vyroba-UZPI,47:129-134.
    52. Topcuoğlu, B. 2005. Effects of Repeated Applications of Sewage Sludge and MSW Compost on the Bioavailability of Heavy Metals in Greenhouse Soil. Polish Journal of Environmental Studies, 14(2):217-222.
    53. Torri, S. and Lavado, R. 2009. Plant absorption of trace elements in sludge amended soils and correlation with soil chemical speciation. Journal of Hazardous Materials, 166:1459–1465.
    54. Tsadilas, CH. D. and Shaheen, S. M. 2013. Utilization of biosolids in production of bioenergy crops II: Impact of application rate on bioavailability and uptake of trace elements by Canola. Communications in Soil Science and Plant Analysis, 44:259–274.
    55. Usman, A.R.A., Kuzyakov, Y., and Stahr, K. 2004. Effect of clay minerals on extractability of heavy metals and sewage sludge mineralization in soil. Chemistry and Ecology, 20(2): 123–135.
    56. Walter, I. and Guevas, G. 1999. Chemical fractionation of heavy metals in a soil amended with repeated sewage sludge applications. Science of the Total Environment, 226: 113-119.
    57. White, J.C., Mattina, M.J.I., Lee, W.Y., Eitzer, B.D., and Lannucci-Berger,W. 2003. Role of organic acids in enhancing the desorption and uptake of weathered p,p'-DDE by Cucurbita pepo. Environmental Pollution, 124: 71–80.
    58. Yeganeh, M., Afyuni, M., Khoshgoftarmanesh, A.H., Rezaeinejad, Y., and Schulin, R.  2010. Transport of zinc, copper, and lead in a sewage sludge amended calcareous soil. Soil Use and Management, 26: 176–182.