[1].             Abdullahi, M. S., Uzairu, A. & Okunola, O. J., (2009). Quantitative determination of heavy metal concentration in onion leaves. International Journal of Environmental Research. 3(2), 271-274.

[2].             Allaway, W.H., Burau, R.G., Fulkerson, W., . Laitinen, H.A., Newberne, P.M., Pierce, J.O. & Wixson, B.G. (1974). Cadmium, Zinc, and lead. National Academy of sciences, Washington: D.C. V1:43-56

[3].             Beecher, C., (1994). Cancer preventive properties of varieties of Brassica oleracea: a review. American Journal of Clinical Nutrition, 59: 1166-1170.

[4].             Behtash, F., Tabatabaei, S.J., Malakouti, M.J., Sororaddin M.H., & Oustan, Sh., (2010). Effect of Zinc and Cadmium on Growth, Chlorophyll Content, Photosynthesis, and Cadmium Concentration in Red Beet. Iranian Journal of Soil Research (Soil and Water Science, 24, 1, (in Farsi).

[5].             Bremner, M. (1970). Nitrogen total, regular kjeldahl method. Methods of Soil Analysis, Part2: Chemical and MicrobiologicalProperties. 2nd ed. Wisconsin. USA: Madison publisher. 610-616.

[6].             Byers, T., Nestle, M., McTiernan, A., Doyle, C., Currie-Williams, A., Gansler, T. & Thun, M. (2002). The American Cancer Society 2002 Nutrition and Physical Activity Guidelines Advisory Committee. Reducing the Riskof Cancer with Healthy Food Choices and Physical Activity. CACancer Journal. Clinicans, 52: 92-119.

[7].             Drew, M.C., Hole, P.S. & Picchioni, G. A. (1990). Inhabitation by NaCl of net Co2 fixation and yield of cucumber. Journal. American. Society. Horticultural. Science. 115: 472-477.

[8].             Etehadnia, M., Schoenau, J., Waterer, D., Karen, T. (2010). The effect of CaCl2 and NaCl Salt Acclimation in stress Tolerance and its  potential role in ABA and Scion/Rootstock-Mediated salt Stress responses. Plant Stress. 4: 72-81

[9]. FAO. (1990). Management of gypsiferous soils. Food and Agriculture organization. Available at Web site http://www.worldcat.org/title/management-of-gypsiferous-soils/oclc/65862815. (verified 5 October 2011).

[10].         Gee, G.W., & Bauder J.W. (1986). Particle-size analysis. Methods of Soil Analysis, Part 1: Physical and Mineralogical Methods. Wisconsin, USA: Madison Publisher

[11].         Grattan, S.R., Grieve, C.M. 1999. Salinity-mineral nutrient relations in horticultural crops. - Science. Horticultural. 78: 127-157.

[12].         Hart, J.J., Welch, R.M., Norvell, W.A. & Kochian, L.V. (2002). Transport interactions between Cadmium and Zinc in roots of bread and durum wheat seedlings. Physiology Plant, 116, 73e78.

[13].         Hassan, M. J., Zhu, Z., Ahmad, B., and Mahmood, Q. 2006. Influence of cadmium toxicity on rice genotypes as affected by zinc, sulfur and nitrogen fertilizers. Caspin Journal. Environmental Science. 4(1): 1-8.

[14].         Helal, H.M., Haque S.A., Ramadan A.B., & Schung, E. (1996). Salinity-Heavy Metal Interactions as Evaluated by Soil Extraction and Plant Analysis. Commun. Soil Science Plant Analysis. 27:1355–1361.

[15].         Homaee, M. (2002). Plants response to salinity. Iranian Society of Irrigation and Drainage. 58, 97, (in Farsi).

[16].         Honma, Y., Hirata, H. (1978). A noticeable increase in Cd absorption by Zn deficient rice plants. Soil Science and Plant Nutrition. 24, 295e297.

[17].         Jaleel, C. A., Gopi, R., Sankar, B., Manivannan, P., Kishorekumar, A., Sridharan, R. & Panneerselvam, R. (2007a). Studies on germination, seedling vigour, lipid peroxidation and proline metabolism in Catharanthus roseus seedlings under salt stress. South African Journal of Botany 73, 190-195.

[18].         Jaleel, C. A., Manivannan. P., Kishorekumar, A., Sankar, B. & Panneerselvam, R. (2007b). Calcium chloride effects on salinity induced oxidative stress, proline metabolism and indole alkaloid accumulation in Catharanthus roseus. Comptes Rendus Biologies 330.

[19].         Jalil, A. F., Selles, & Clark, J.M. (1994). Effect of Cd on growth  and uptake of Cd and other elements by durum wheat. Journal of Plant Nutrition 17: 1839-1858.

[20].         Karimian, N. (1995). Effect of nitrogen and phosphorus on Zinc nutrition of corn in a calcareous soil. Journal of Plant Nutrition, 18: 2261-2271.

[21].         Khoshgoftarmanesh, A. H., shariatmadari, H., Karimian, N., Kalbasi, M. 2004. Salinity and zinc application effects on phytoavailability of cadmium and zinc. Soil Sciences Society American Journal, 68:1885-1889.

[22].         Khosh goftarmanesh, A. H., Shariatmadari, H, Kalbasi, M. & Qma, L. (2003). Effect of NaCl salinity and Zn Application on species of Cd and in soil solution. Seventh International conference on the Biogeochemistry of Trace Elements, Uppsala, Sweden.

[23].         Köleli, N.,  Eker, S. & Cakmak, I. (2004). Effect of Zinc fertilization on Cadmium toxicity in durum and bread wheat grown in Zinc-deficient soil. Environmental Pollution 131: 453-459

[24].         Mc Lean, E.D. (1982). Soil pH and lime requirement. Methods of Soil Analysis Part 2: Chemical and Microbiological Properties. 2nd ed. Wisconsin, USA: Madison Publisher

[25].         Norvell, W. A., Hopkins, J. Wu., D.G. & Welch, R. M. (2000). Assosiation of Cadmium in Durum Wheat Grain with Soil Chloride and Chelate-Extractable Soil Cadmium. Soil Science Society of America Journal, (64):2162-2168.

[26].         Oliver, D.P., Schultz, J.E., Tiller, K.G., Wilhelm, N.S., Merry, R.H.Cozens, G.D. (1994). The effects of Zinc fertilization on Cadmium concentration in wheat grain. Journal of Environmental Quality, 23, 705-711.

[27].         Olsen, S. R.; Sommers, L. E., (1990). Phosphorus. in: Page, A.L. (Ed.). Methods of Soil Analysis. Parts 2, Agron., Monogr No. 9 Madison, WI. 403-431.

[28].         Parida, A.K., Das, A.B. (2005). Salt tolerance and salinity effects on plants: a review. Ecotoxicology and Environmental Safety, 60: 324-349.

[29].         Richards, L.A. (1954). Diagnosis and Improvement of Saline and Alkali Soils, L.A. Richards (eds). Handbook of . U.S. Dept. of Agriculture, Washington: p. 4-160.

[30].         Saleh, J. and Maftoun, M. (2008). Interactive Effects of NaCl Levels and Zinc Sources and Levels on the Growth and Mineral Composition of Rice. Journal of Agricultural Science and Technology, 10: 325-336.

[31].         Smith, S. R. (1994). Effect of soil pH on availability to crops of metals in sewage sludge-treated soil. 1. Nickel, Cu and Zn uptake and toxicity to ryegrass. Environmental Pollution Journal, 85:321-327.

[32].         Terry, N. & Banuelos, G.(2000). Phytoremediation of Contaminated Soil and Water. Boca Raton: Lwis Publication, c2000.

[33].         Torresday, J. L., Videa, J. R. P., Rosa, G. D. & Parsons, J., 2005. Pytoremediation of heavy metals and study of the metal coordination by X-ray absorbtion spectroscopy. Coordination chemistry Review, 249, 1797- 1810.

[34].         Trajkova, F., & Papadatonakis, N. (2006). Comparative effects of NaCl and CaCl2 salinity on cucumber grown in a closed hydroponic system. HortScience, 41(2); 437-441.

[35].         Walkley, A. &  Black, I.A. (1934). An examination of the Degtareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Science. (37): 29.

[36].         Weggler-Beaton, K., Mclaughlin, M.J. &. Graham, R. D.(2000). Salinity increases Cadmium uptake by wheat and Swiss Chard from soil amended with biosolide. Australian Journal of Soil Research, 38: 37-45.

[37].         Welch, R.M., Hart, J.J., Norvell, W., Sullivan, L.A., Kochian, L.V. (1999). Effects of nutrient solution Zinc activity on net uptake, translocation, and root export of Cadmium and Zinc by separated sections of intact durum wheat (Triticum turgidum L-var durum) seedling roots. Plant Soil, 208, 243-250.

[38]. Wu, F.B., Zhang, G.P. (2002). Alleviation of Cadmium-toxicity by application of Zinc and ascorbic acid in barley. Journal of Plant Nutrition, 25, 2745-2761.