Abd-Alla, M. H. (1994). Phosphatases and the utilization of organic phosphorus by Rhizobium leguminosarum biovar viceae. Letters in Applied Microbiology, 18(5), 294-296.
Ashrafi-Saeidlou, S., and Rasouli-Sadaghiani, M.H. Asadzadeh, F. Barin M. (2016). Modeling Phosphate Solubilization by Pseudomonas fluorescens Using Response Surface Methodology. Water and Soil Science, 26: 299-324. (In Farsi)
Attoe, O. J., & Olson, R. A. (1966). Factors affecting rate of oxidation in soils of elemental sulfur and that added in rock phosphate-sulfur fusions. Soil science, 101(4), 317-325.
Brahim, S., Niess, A., Pflipsen, M., Neuhoff, D., & Scherer, H. (2017). Effect of combined fertilization with rock phosphate and elemental sulphur on yield and nutrient uptake of soybean. Plant, Soil and Environment, 63(2), 89-95.
Cotteni, A. (1980). Methods of plant analysis. Pp. 64-100. In: Soil and Plant Testing FAO Soil Bulletin.
Evans, J., McDonald, L., & Price, A. (2006). Application of reactive phosphate rock and sulphur fertilisers to enhance the availability of soil phosphate in organic farming. Nutrient Cycling in Agroecosystems, 75(1-3), 233-246.
Khawazi, K., Asgharzadeh, A., Rajali, F., Asadi Rahmani, Besharati, H., & Fallah Nosratabadi, AS. (2013). Instructions on how to investigate bio-fertilizers. SADES Publications, 44 Pp. (In Farsi)
Kucey, R. M. N. (1983). Phosphate-solubilizing bacteria and fungi in various cultivated and virgin Alberta soils. Canadian Journal of Soil Science, 63(4), 671-678.
Kucey, R.M.N., & Leggett, M.E. (1989). Increased yield and phosphorus uptake by canola inoculated with a phosphate-solubilizing isolate of penicillium bilaj. Canadian Journal of Soil Science, 69: 425-432.
Myers, R. H., Montgomery, D. C., & Anderson-Cook, C. M. (2016). Response surface methodology: process and product optimization using designed experiments. John Wiley & Sons.
Nancarrow, L., & Taylor, J. H. (1998). The Worm Book: The Complete Guide to Worms in Your Garden. Random House Digital, Inc.
Padmavathi, T. (2015). Optimization of phosphate solubilization by Aspergillus niger using plackett-burman and response surface methodology. Journal of soil science and plant nutrition, 15(3), 781-793.
Pradhan, N., & Sukla, L. B. (2006). Solubilization of inorganic phosphates by fungi isolated from agriculture soil. African Journal of Biotechnology, 5(10).
Rajan, S. S. S. (1983). Effect of sulphur content of phosphate rock/sulphur granules on the availability of phosphate to plants. Fertilizer research, 4(3), 287-296.
Rodrı́guez, H., & Fraga, R. (1999). Phosphate solubilizing bacteria and their role in plant growth promotion. Biotechnology advances, 17(4-5), 319-339.
Sagoe, C. I., Ando, T., Kouno, K., & Nagaoka, T. (1998). Residual effects of organic acid-treated phosphate rocks on some soil properties and phosphate availability. Soil science and plant nutrition, 44(4), 627-634.
Saleh Rastin, N. (1998). Biological Fertilizers. Iranian Journal Soil and Water Science, 13: 1-36. (In Farsi)
Salimpour, S., Khavazi, K., Nadian, H.A., & Besharati, B. (2010). Effect of Rock Phosphate Along With Sulfur and Microorganisms on Yield and Chemical Composition of Canola. Iranian Journal Soil and Water Science, 24: 9-19. (In Farsi)
Sangeeta, M., & Nautiyal, C.S. (2001). An efficient method for qualitative screening of phosphate-solubilizing bacteria. Current Microbiology, 43:51-56.
Sarikhani, M.R., Aliasgharzad, N., & Khoshru, B. (2016). Effectiveness of phosphate solubilizing bacteria in the form of phosphate microbial fertilizer on maize. Iranian Journal of Soil and Water Research, 94:71-81. (In Farsi)
Seilsepour, M., Baniani, E., & Kianirad, M. (2002). Effect of Phosphate Solubilizing Microorganism (PSM) in reducing the rate of phosphate fertilizers application to cotton crop. Proceedings of the 15th International Meeting on Microbial Phosphate Solubilization Salamanca University, 16-19 July, Salamanca, Spain.
Shilpa, M. E., & Brahmaprakash, G. P. (2016). Amendment of carrier with organic material for enhancing shelf life of microbial consortium. Journal of Pure and Applied Microbiology, 10(4), 2835-2842.
Singh, C. P., & Amberger, A. (1991). Solubilization and availability of phosphorus during decomposition of rock phosphate enriched straw and urine. Biological Agriculture & Horticulture, 7(3), 261-269.
Somasegaran, P., & Hoben, H. J. (1994). Preparing a Range of Carrier Materials and Producing Inoculants. In Handbook for Rhizobia (pp. 240-248). Springer, New York, NY.
Stamford, N. P., Santos, P. R. D., Moura, A. M. M. F. D., & Freitas, A. D. S. D. (2003). Biofertilizers with natural phosphate, sulphur and Acidithiobacillus in a soil with low available-P. Scientia Agricola, 60(4), 767-773.
Stanisławska-Glubiak, E., Korzeniowska, J., Hoffmann, J., Górecka, H., Jóźwiak, W., & Wiśniewska, G. (2014). Effect of sulphur added to phosphate rock on solubility and phytoavailability of phosphorus. Polish Journal of Chemical Technology, 16(1), 81-85.
Swetha, S., Varma, A., & Padmavathi, T. (2014). Statistical evaluation of the medium components for the production of high biomass, α-amylase and protease enzymes by Piriformospora indica using Plackett–Burman experimental design. 3 Biotech, 4(4), 439-445.
Whitelaw, M. A. (1999). Growth promotion of plants inoculated with phosphate-solubilizing fungi. In Advances in Agronomy (Vol. 69, pp. 99-151). Academic Press.
Zapata, F., & Roy, R. N. (2004). Use of phosphate rocks for sustainable agriculture. FAO Fertilizer and Plant Nutrition Bulletin, 1-148.
Ziaeyan, A. (2012). The possibility of biological phosphate fertilizers application in corn cultivation of Fars Province. Journal of Soil Management and Sustainable, 2:111-125. (In Farsi)
Ziaeyan, A. Salim-pour, S. Silsipour, M. & Safari, H. (2010) Evaluation of some bio and chemical P- fertilizers in corn. The 1st Iranian Fertilizer Challenges Congress Half a Century of the Fertilizer Consumption. (In Farsi)
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