Abdi S, 2016. Modeling of release rate and adsorbing capacity of potassium in pistachio orchards of Rafsanjan region. PhD Dissertation, Soil Science Department, College of Agriculture, Vali-e-Asr university of Rafsanjan. (In Persian)
Alison LE and Moodie CD, 1965. Carbonate. Pp. 1379-1396. In: Black CA, Evans DD, Ensminger LE, White JL and Clark FE.. (eds.). Methods of Soil Analysis. Part II, American Society of Agronomy, Madison, Wisconsim.
Al-Kanani T, Mackenzi AF and Ross GJ, 1984. Potassium status of some Quebec soils: K release by nitric acid and sodium tetraphenyl boron as related to particle size and mineralogy. Canadian Journal of Soil Science 64: 99-106.
Arnold PW and Close BM, 1961. Potassium releasing power of soils from the agdell rotation experiment assessed by glasshouse cropping. Journal of Agriculture Science 57(3): 381-386.
Bahreini M, Dordipour E and Khormali F, 2013. The role of non-exchangeable potassium on plant nutrition (Zea mays L.) in predominant soil series of Golestan province. 23(2): 159-176. (In Persian)
Bouyoucos GJ, 1951. A recalibration of hydrometer method for making mechanical analysis of soil. Agronomy Journal 43: 434-438.
Chapman HD, 1965. Cation exchange capacity. Pp. 891-900. In: Black CA, Evans DD, Ensminger LE, White JL and Clark FE. (eds.). Methods of Soil Analysis. Part II, American Society of Agronomy, Madison, Wisconsin.
Farpoor MH, Khademi H and Eghbal MK, 2002. Genesis and distribution of palygorskite and associated clay minerals in Rafsanjan soils on different geomorphic surfaces. Iranian Agricultural Research 21: 39-60.
Gangopadhyay SK, Sahoo AK and Das K, 2005. Forms and distribution of potassium in some soils of Ranchi plateau. Journal of the Indian Society of Soil Science 53(3): 413-416.
Havlin JL, Beaton JD, Tisdale SL and Nelson, WL, 1999. Soil Fertility and Fertilizers. Prentice-Hall International (UK) Limited, London.
Helmek PA and Sparks D, 1996. Lithium, sodium potassium, rubidium and cesium. Pp. 551-575. In: Sparks DL. (ed.). Methods of Soil Analysis. Part 3, chemical methods. Soil Science Society of American Madison Wisconsin.
Hosseinifard SJ, Khademi H and Kalbasi M, 2010. Different forms of soil potassium as affected by the age of pistachio (Pistacia vera L.) trees in Rafsanjan, Iran. Geoderma 155: 289-297.
Huang PM, 2005. Chapter 4: Chemistry of potassium in soils. Pp. 227-292. In: Tabatabiai MA and DL Sparks (eds.). Chemical Processes in Soils. Soil Science Society of America, Madison, WI.
Jackson ML, 1975. Soil Chemical Analysis, Advanced Course. University of Wisconsin, College of Agriculture, Department of Soil Science, Madison, Wisconsim., U S A.
Jafari S, baghernezhad M and Chorom M, 2005. Evaluation of changes in physco-chemical properties in cultivated (under sugarcane and rotation cropping) and non-cultivated soils in Haft-Tappeh (Iran). Journal of Agricultural Engineering 28(1): 165-182. (In Persian)
Khodshenas MA and Maftoun M, 2005. Comparison of chemical extractants for extracting of available potassium for rice in wetland calcareous soils in Fars province. Proceedings of the 9th Iranian Soil Science Congress, 4-6 September, Soil Conservation and Watershed Management Research Center, Tehran. (In Persian)
Khosgoftarmanesh AH, 2004. Determination the most important factors limiting pistachio production in saline soils of Qom province. Qom Province Research Journal, qom Province Management and Planning Organization Publication. (In Persian)
Kundu MC, Hazra GC, Biswas PK, Mondal S and Ghosh GK, 2014. Forms and distribution of potassium in some of Hooghly district of West Bengal. Journal of Crop and Weed 10(2): 31-37.
Lindsay WL and Norvell WA, 1978. Development of a DTPA soil test for zinc, iron, manganese and copper. Soil Science Society of American Journal 42: 421-428.
Madaras M and Koubova M, 2015. Potassium availability and soil extraction tests in agricultural soils with low exchangeable potassium content. Plant, Soil and Environment 61(5): 234-239.
Malakouti, MJ and Homaee, M, 1995. Soil fertility in arid regions. Tarbiat Modarres University Publication. (In Persian)
Malavolta E, 1985. Chapter 8: Potassium status of tropical and subtropical region soils. Pp. 163-200. In: Munson RD (ed.). Potassium in Agriculture. American Society of Agronomy, Madison, Wisconsin.
Mengel K and Kirkby EA, 2001. Principles of Plant Nutrition. 5th ed. Kluwer Academic Publishers, Dordrecht, Boston, London.
Najafi Ghiri M, 2016. Changes in different forms of soil potassium at various growth stages of wheat. Iranaian Journal of Soil Research 30(1): 39-47. (In Persian)
Najafi Ghiri M, Abtahi A , Jaberian F and Owliaie HR, 2010. Relationship between soil potassium forms and mineralogy in highly calcareous soils of Southern Iran. Australian Journal of Basic and Applied Sciences 4(3):434-441.
Neaman A and Singer A, 2004. The effects of palygorskite on chemical and physico-chimical properties of soils: review. Geoderma 123(3-4): 297-303.
Patil RB, 2011. Role of potassium humate on growth and yield of soybean and black gram. International Journal of Pharma and Bio sciences 2(1): 242-246.
Pishgir M and Jafari S. 2014. Comparison between potassium and ammonium fixation by clays in different agriculture systems. Journal of Water and Soil Science (Science and Technology of Agriculture and Natural Resources) 18 (69): 237-250. (In Persian)
Raheb A and Heidari A, 2012. Effects of clay mineralogy and physico-chemical properties on potassium availability under soil aquic conditions. Journal of Soil Science and Plant Nutrition 12 (4): 747-761.
Rezapour S, Samadi A, Jafarzadeh, AA and Oustan Sh, 2010. Impact of clay mineralogy and landscape on potassium forms in calcareous soils, Urmia region. Journal of Agricultural Science and Technology 12: 495-507.
Richards LA, 1954. Diagnosis and Improvement of Saline and Alkali Soils. U.S.D.A. Handbook, 60. Washington, D.C., U.S.A.
Romheld V and Kirkby EA, 2010. Research on potassium in agriculture; needs and prospects. Plant and Soil 335: 155-180.
Rowell D, 1994. Soil Science: Methods and Applications. Longman Scientific and Technical, UK.
Saini J and Grewal KS, 2014.Vertical distribution of different forms of potassium and their relationship with different soil properties in some Haryana soil under different crop rotation. Advances in Plants and Agriculture Research 1(2):1-5.
Salardini AA, 2008. Soil fertility. 8th Edition, University of Tehran Press. (In Persian)
Setia RK and Sharma KN, 2004. Vertical distribution of chemical pools of potassium and their relationship with potassium nutrition of wheat under long-term differential fertilization. Journal of the Indian Society of Soil Science 52(4): 469-472.
Shahbazi k, Tofighi H and Siadati SM, 2007. Effect of different moisture regimes on soil exchangeable potassium. Iranian Journal of Agriculture Science 38(2): 161-171. (In Persian)
Shivaprakash BL, Gurumurthy KT and Chidanandappa HM, 2008. Evaluation of suitable extractant for available potassium in rice soils of Tunga command area in Karnataka. Mysore Journal of Agricultural Sciences 42: 264-267.
Simard RS, Dekimpe CR. and Zizka J, 1992. Release of potassium and magnesium from soil fractions and its kinetics. Soil Science Society of American Journal 56: 1421-1428.
Singh HR, Singh TA and Singh S, 1993. Potassium forms in Mollisols of Nainital Tarai. Journal of Potassium Research 9: 8-15.
Sinha AK and Biswas S, 2003. Distribution of different forms of potassium in surface and subsurface horizons of some well established soils of Wes Bengal under the order Inceptisols. Journal of Interacademicia 7(3): 286-291.
Sparks DL and Huang PM, 1985. Physical chemistry of soil potassium. Pp. 201-276. In: Munson RD (ed.), Potassium in Agriculture. American Society of Agronomy, Madison, Wisconsin.
Sparks DL, 1987. Chapter 1: Potassium dynamics in soils. Pp: 1-63. In: Stewart BA. Advances in soil science, Springer-Verlag New York.
Sparks DL, 2000.Chapter 2: Bioavailibility of potassium. Pp. 38-52. In: Sumner ME (ed.). Handbook of Soil Science, CRC Press, Boca Raton, FL.
Steenkamp CJ, Theron AA and Bruyn JA, 1989. Potassium fixation in an Arcadia soil. II. Fixation by the clay fraction. South African Journal of Plant and Soil 6(2): 86-91.
Tabatabai MA and Hanway JJ, 1968. Potassium supplying power of Iowa soils at their minimal levels of exchangeable potassium. Soil Science Society of American Proceedings 33: 105-109.
Zhang QC, Wang GH, Feng YK, Qian P and Schoe-Nau JJ, 2011. Effect of potassium fertilization on soil potassium pools and rice response in an intensive cropping system in China. Journal of Plant Nutrition and Soil Science 174: 73-80.
)