[1] Ash, M. (2012) Soybean and Oil Seeds. United States Department of Agriculture Economic Research Service.
http://www.ers.usda.gov/topics/crops/soybeans-oil-crops.aspx
[2] Wilson, R.F. (2008) Soybean: Market Driven Research Needs. In: Stacey, G., Eds., Genetics and Genomics of Soybean, Plant Genetics and Genomics: Crops and Models, Vol. 2, Springer, New York, NY.
https://doi.org/10.1007/978-0-387-72299-3_1
[3] Potter, B. (2017) AGWEB.com Powered by Farm Journal.
[4] Ahmad, H.R., Aziz, T., Hussain, S., Akraam, M., Sabir, M., Khashi, S.U.R. and Hanafi, M.M. (2012) Zinc-Enriched Farm Yard Manure Improves Grain Yield and Grain Zinc Concentration in Rice Grown on a Saline-Sodic Soil. International Journal Agriculture and Biology, 14, 787-792.
[5] Gurmani, A.R., Din, J.U., Khan, S.U., Andaleep, R., Waseem, K., Khan, A. and Hadyat-Ullah. (2012) Soil Application of Zinc Improves Growth and Yield of Tomato. International Journal Agriculture and Biology, 14, 91-96.
[6] Zahoor, F., Ahmed, M., Mubeen, K., Siddqui, M.H., Rasheed, M., Ansar, R. and Mehmood, K. (2013) Soybean (Glycine max L.) Response to Micro-Nutrients. Turkish Journal of Field Crops, 18, 134-138.
[7] Asadi, A. and Mahmoodi, M. (2001) Investigation Trends and Its Consequences Mazandaran Province. The 7th Soil Sciences Congress, Shahrkord, Iran. (In Persian)
[8] Frageria, N.K. (2007) Soil Fertility and Plant Nutrition Research under Field Conditions: Basic Principles and Methodology. Journal of Plant Nutrition, 30, 203-223.
https://doi.org/10.1080/01904160601117887
[9] Sarkar, D., Mandal, B. and Kundu, M.C. (2007) Increasing Use Efficiency of Boron Fertilisers by Rescheduling the Time and Methods of Application for Crops in India. Plant Soil, 301, 77-85.
https://doi.org/10.1007/s11104-007-9423-1
[10] Smith, D. (2010) Micronutrients Can Have a Macro Impact. Farm Journal, 134, 27-30.
[11] Cakmak, I. and Kutman, U.B. (2018) Agronomic Biofortification of Cereals with Zinc: A Review. European Journal of Soil Sciences, 69, 172-180.
https://doi.org/10.1111/ejss.12437
[12] Ali, S., Khan, A.R., Arif, M., Mairaz, G., Fida, M. and Saiqq, B. (2008) Assessment of Different Crop Nutrient Management Practices for Yield Improvement. Australian Journal of Crop Sciences, 2, 150-157.
[13] Ghasemian, V. (2000) Evaluation of Micro Nutrient Elements Effects on Quality and Quantity of Soybean Seeds in East Azerbaijan. M.Sc. Thesis, Tarbiat Modarres University.
[14] Goli, M., Pande, M. and Bellaloui, N. (2012) Effects of Chelating Agents on Protein, Oil, Fatty Acids, and Minerals in Soybean Seed. Agricultural Sciences, 3, 517-523.
http://www.scirp.org/journal/PaperInformation.aspx?paperID=20174&publishStatus=2
https://doi.org/10.4236/as.2012.34061
[15] Simons, J.N., Swindler, R. and Benedict, H.M. (1961) Absorption of Chelated Iron by Soybean Roots in Nutrient Solutions. Physiology, 37, 460-466.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC549816/pdf/plntphys00427-0008.pdf
https://doi.org/10.1104/pp.37.4.460
[16] Goli, M., Pande, M., Bellaloui, N. and Wrachien, D. (2015) Effects of Soil Applications of Micro-Nutrients and Chelating Agent Citric Acid on Mineral Nutrients in Soybean Seeds. Agricultural Sciences, 6, 1404-1411.
https://doi.org/10.4236/as.2015.611136
[17] SAS (2001) SAS 9.1 TS Level 1M3, Windows Version. 5.1.2600. SAS Institute, Gary.
[18] Bellaloui, N. and Gillen, A.M. (2010) Soybean Seed Protein, Oil, Fatty Acids and Mineral Composition as Influenced by Soybean Corn Rotation. Agricultural Sciences, 1, 27-30.
https://doi.org/10.4236/as.2010.13013
[19] Helrich, K. (1990) Method 988.05. 15th Edition, Official Methods of Analysis, The Association of Official Analytical Chemists Inc., Arlington.
[20] Helrich, K. (1990) Method 920.39. 15th Edition, Official Methods of Analysis, The Association of Official Analytical Chemists Inc., Arlington.
[21] Yasari, E. and Vahedi, A. (2012) Micronutrients Impact on Soybean (Glycine max (Merrill)) Qualitative and Quantitative Traits. International Journal of Biology, 4, 112-118.
https://doi.org/10.5539/ijb.v4n2p112
[22] MacDonald, R.S. (2000) The Role of Zinc in Growth and Cell Proliferation. The Journal of Nutrition, 130, 1500S-1508S.
https://doi.org/10.1093/jn/130.5.1500S
[23] Caliskan, S., Ozkaya, I.M.E., Caliskan, M.E. and Arslan, M. (2008) The Effects of Nitrogen and Iron Fertilization on Growth, Yield and Fertilizer Use Efficiency of Soybean in a Mediterranean-Type Soil. Field Crops Research, 108, 126-132.
https://doi.org/10.1016/j.fcr.2008.04.005
[24] Campo, R.J., Araujo, R.S. and Hungria, M. (2009) Molybdenum Enriched Soybean Seeds Enhance Nitrogen Accumulation, Seed Yield Seed Protein Content in Brazil. Field Crop Research, 110, 219-224.
https://doi.org/10.1016/j.fcr.2008.09.001
[25] Bennett, W.F. (1993) Plant Nutrient Utilization and Diagnostic Plant Symptoms. In: Bennett, W.F., Ed., Nutrient Deficiencies and Toxicities in Crop Plants, The APS Press, St Paul, 1-7.