1.Abbaspour, A. 2011. Fractionation of copper in soils as influenced by waterlogging and application of crop residues. Iran. J. Soil Res. (Soil and Water Sciences). 25: 4. 295-306. (In Persian)
2.Agbenin, J.O. 2010. Extractability and transformation of copper and zinc added to tropical Savanna soil under long-term pasture. Communications in Soil Science and Plant Analysis, 41: 1016-1027.
3.Agrawal, H.P., and Gupta, L.M. 1990. Evaluation of a common extractant for estimating available iron, manganese, zinc and copper in soils. Andhra Agric.J. 37: 237-240.
4.Alavi, H., Barani Motlagh, M., and Dordipour, E. 2012. Determination of chemical forms of copper and relationships with plant responses and soil properties in some soils of GolestanProvince. J. Water Soil Cons. 19: 3. 43-62. (In Persian)
5.Alvarez, J.M., Lopez-Valdivia, L.M., Novillo, J., Obrador, A., and Rico, M.I. 2006. Comparison of EDTA and sequential extraction tests for phytoavailability prediction of manganese and zinc in agricultural alkaline soils. Geoderma, 132: 450-
6.Bakhshi, M.R. 2003. Determination of chemical forms of iron by two laboratory methods and evaluation of effect of iron on growth and chemical composition of soybean and chemical forms of some elements in soil. M.Sc. Thesis, Department of Soil Science, Faculty of Agriculture, ShirazUniversity. (In Persian)
7.Barker, A.V., and Pilbem, D.J. 2007. Handbook of plant nutrition. Taylor and Francis group, 773p.
8.Brun, L.A., Maillet, J., Hinsinger, P.,and Pe´pin, M. 2001. Evaluation of copper availability to plants in copper-contaminated vineyard soils. Environmental Pollution, 111: 293-302.
9.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.
10.Ehyaie, M. 1997. Descriptions of methods for soil chemical analysis, Soil and Water Research Institute, Tehran, Iran. 2: 1024. (In Persian)
11.Esmaily, A., Fotovat, A., Karimian, N., Haghnia, Gh., and Mosadeghi, M. 2008. Effect of compost and cow manure on corn growth and copper concentration in two calcareous soils. 3rd National Congress of Recycling and Reuse
of Organic Renewable Resources in Agriculture. Isfahan, Islamic AzadUniversity, Khorasgan. Branch. (In Persian)
12.Esmaily, A., Karimian, N., Fotovat, A., and Haghnia, Gh. 2008. Effect of compost and copper on different chemical forms of copper in two calcareous soils. The second Conference and Exhibition of Environmental Engineering. TehranUniversity. (In Persian)
13.Feng, M.H., Shan, X.Q., Zhang, S.Z., and Wen, B. 2005. Comparison of a rhizosphere-based method with other one-step extraction methods for assessing the bioavailability of soil metals to wheat. Chemosphere, 59: 939-949.
14.Filgueiras, A.V., Lavilla, I., and Bendicho, C. 2002. Chemical sequential extraction for metal partitioning in environmental solid samples. J. Environ. Monitor. 4: 823-857.
15.Finzgar, N., Tlustos, P., and Lestan, D. 2007. Relationship of soil properties to fractionation, bioavailability and mobility of lead and zinc in soil. Plant, Soil and Environment, 53: 225-238.
16.Fuentes, A., Llorens, M., Saez, J., Soler, A., Aguilar, M., Ortuno, J.F., and Meseguer, V.F. 2004. Simple and sequential extractions of heavy metals from different sewage sludges. Chemosphere, 54: 1039-1047.
17.Graft, M., Lair, G.J., Zehenter, F., and Gerzabek, M.H. 2007. Geochemical fractions of copper in soils chronosequences of selected European floodplains. Environmental Pollution, 148: 3. 788-796.
18.Guan, T.X., He, H.B., Zhang, X.D.,and Bai, Z. 2011. Cu fractions, mobility and bioavailability in soil-wheat system after Cu-enriched livestock manure applications. Chemosphere, 82: 215-222.
19.Gupta, A.K., and Sinha, S. 2007. Assessment of single extraction method for the prediction of bioavailability of metals to Brassica juncea L. Czern. (var. Vaibhav) grown on tannery waste contaminated soil. J. Hazard. Mater. 149: 144-150.
20.Han, F.X., Kingery, W.L., and Selim, H.M. 2001. Accumulation, redistribution, transport, and bioavailability of heavy metals in waste-amended soils. P 145-173, In: I.K. Iskandar and M.B. Kirkham (eds), Trace elements in soil, bioavailability, flux and transfer. CRC Press.
21.Han, F.X., and Banin, A. 1997. Long-term transformations and redistribution of potentially toxic heavy metals in
arid-zone soils incubated I. under saturated conditions. Water, Air and Soil Pollution. 95: 399-423.
22.Han, F.X., Kingery, W.L., Selim, H.M., and Gerald, P. 2000. Accumulation of heavy metals in a long-term poultry waste-amended soil. Soil Science.165: 260-268.
23.He, Z.L.L., Yang, X.E., and Stoffella, P.J. 2005. Trace elements in agroecosystems and impacts on the environment. J. Trace Elem. Med. Biol. 19: 125-140.
24.Hedarinejad, A., and Abosaeedi, D. 2006. Identify and review of effective factors on the fine leaf pistachios form viewpoint plant diseases, nutrition and irrigation. Final report, Irrigation and Plant Nutrition Department, Pistachio Research Center, Iran. (In Persian)
25.Kabala, C., and Singh, B.R. 2001. Fractionation and mobility of copper, lead and zinc in soil profiles in the vicinity of a copper smelter. J. Environ. Qual. 30: 485-492.
26.Kabata-Pendias, A. 2010. Trace elements in soils and plants. CRC Press, Boca Raton, FL, USA. 548p.
27.Kawasaki, A., Kimura, R., and Arai,S. 2000. Fractionation of trace elements in wastewater treatment sludges. Communications in Soil Science and Plant Analysis. 31: 2413-2423.
28.Keller, C., and Vedy, J.C. 1994. Distribution of copper and cadmium fractions in two forest soils. J. Environ. Qual. 23: 29
.Khanlari Z.V., and Jalali, M. 2008. Concentrations and chemical speciation of five heavy metals (Zn, Cd, Ni, Cu, and Pb) in selected agricultural calcareous soils of HamadanProvince, western Iran. Archives of Agronomy and Soil Science. 54:
30.Lena, Q.M., and Gade, N.R. 1997. Heavy metals in the environment: chemical fractionation of cadmium, copper, nickel and zinc in contaminated soils. J. Environ. Qual. 26: 259-264.
31.Lindau, C.W., and Hossner, L.R. 1982. Sediment fractionation of Cu, Zn, Cr, Mn, and Fe in one experimental and three natural marshes. J. Environ. Qual. 11: 3. 540-545.
32.Lindsay, W.L. 1991. Iron oxide solubilization by organic matter and its effect on iron availability. Plant and Soil. 130: 27-
33.Ma, Y.B., and Uren, N.C. 1995. Application of a new fractionation scheme for heavy metals in soils. Communications in Soil Science and Plant Analysis. 26: 3291-3303.
34.Mada, I., Gudenschwager, O., Carrasco, M.A., Castillo, G., Ascar, L., and Richter, P. 2009. Copper and zinc bioavailabilities to ryegrass (Lolium perenne L.) and subterranean clover (Trifolium subterraneum L.) grown in biosolid treated Chilean soils. J. Environ. Manage. 90: 2665-2671.
35.Maiz, I., Arambarri, I., Garcia, R., and Millan, E. 2000. Evaluation of heavy metal availability in polluted soils by two sequential extraction procedures using factor analysis. Environmental Pollution. 110: 3-9.
36.Marschner, H. 1995. Functions of mineral nutrients: Micronutrients.In: Mineral nutrition of higher plants,
2nd ed., Academic Press Limited.San Diego. CA. Pp: 313-396.
37.Motaghian, H.R., Hosseinpur, A.R., Mohammadi, J., and Raeisi, F. 2013. Relation between Cu fractions and wheat (Triticum aestivum) indices in some calcareous soils treated and untreated with sewage sludge. Iran. J. Soil Res. (Soil and Water Sciences).26: 4. 337-346. (In Persian)
38.Motaghian, H.R., Hosseinpur, A.R., Mohammadi, J., and Raeisi, F. 2013. Change in bioavailability and fractions of copper in the rhizosphere of wheat (Triticum aestivum L.) in some calcareous soils. Iran. J. Soil Res. (Soil and Water Sciences). 26: 1492-1504.(In Persian)
39.Saffari, V.R., Saffari, M., and Moazallahi, M. 2009. The impact of municipal wastewater on the chemical forms of zinc and copper in two sandy loam and sandy clay soils. 10th National Seminar on Irrigation and Evapotranspiration. ShahidBahonarUniversity of Kerman. (In Persian)
40.Sims, J.L., and Patrick, W.H. 1978. The distribution of micronutrient cations in soil under conditions of varying redox potential and pH. Soil Sci. Soc. Amer. J. 42: 258-262.
41.Sing, K., Shukla, U., and Karwasra, S. 1987. Chemical assessment of the zinc status of the semiarid region of India. Fertilizer Research. 13: 191-197.
42.Singh, J.P., Karwasra, S.P.S., and Singh, M. 1988. Distribution and forms of copper, iron, manganese and zinc in calcareous soils of India. Soil Science. 146: 359-366.
43.Sipos, P. 2009. Distribution and sorption of potentially toxic metals in four forest soils from Hungary. Central Europ. J. Geosci. 1: 183-192.
44.Sposito, G., LeVesque, C.S., LeClaire, J.P., and Chang, A.C. 1983. Trace elements chemistry in arid-zone field soils amended with sewage sludge: III. Effect of the time on the extraction of trace metals. Soil Sci. Soc. Amer. J.47: 898-902.
45.Sposito, G., Lund, L.J., and Chang, A.C. 1982. Trace metal chemistry in arid zone field soils amended with sewage sludge. I: Fractionation of Ni, Zn, Cd and Pb in solid phases. Soil Sci. Soc. Amer. J. 46: 260-264.
46.Stover, R.C., Sommers, L.E., and Silveria, D.J. 1976. Evaluation of metals in waste water sludge. J. Water Poll. Control Fed. 48: 2165-2175.
47.Tabande, L., Bakhshi, M.R., and Karimian, N.A. 2013. Evaluation of the relationships between Cu chemical forms and Cu uptake by Soybean in several calcareous soils in Fars province. Elec. J. Soil Manage. Sust. Prod.3: 1. 183-198. (In Persian)
48.Tabande, L., Maftoun, M., and Karimian, N.A. 2009. Comparison of chemical extractants for determination of copper availability to rice in selected calcareous soils of Fars province. Iran. J. Soil Res. (Soil and Water Sciences).
22: 2. 189-201. (In Persian)
49.Wang, Z., Shan, X.Q., and Zhang, S. 2002. Comparison between fractionation and bioavailability of trace elements
in rhizosphere and bulk soils. Chemosphere. 46: 8. 1163-1171.
50.Xian, X. 1989. Effect of chemical forms of cadmium, zinc, and lead in polluted soils on their uptake by cabbage plants. Plant and Soil. 113: 257-264.
51.Zolfi Bavaryani, M., and Maftoun,M. 2010. Effect of zinc, copper and their chemical forms on growth and chemical composition of rice in a calcareous soil. J. Sci. Technol. Agric. Natur. Resour. (Water and Soil Sciences). 14: 54. 111-120. (In Persian)
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