Abtahi A. 1977. Effect of a saline and alkaline ground water on soil genesis in semiarid southern Iran. Soil Science Society of America Journal, 41(3): 583–588.
Abtahi A. 1980. Soil genesis as affected by topography and time in highly calcareous parent materials under semiarid conditions in Iran. Soil Science Society of America Journal, 44(2): 329–336.
Anil S, Vikas S, Sanjay A, et al. 2016. Potassium fixation capabilities of some inceptisols belonging to plain and sub-mountainous region. Journal of the Indian Society of Soil Science, 64(4): 368–380.
Barré P, Montagnier C, Chenu C, et al. 2008. Clay minerals as a soil potassium reservoir: observation and quantification through X-ray diffraction. Plant and Soil, 302(1–2): 213–220.
Bhonsle N S, Pal S K, Sekhon G S. 1992. Relationship of K forms and release characteristics with clay mineralogy. Geoderma, 54(1–4): 285–293.
Blanchet G, Libohova Z, Joost S, et al. 2017. Spatial variability of potassium in agricultural soils of the canton of Fribourg, Switzerland. Geoderma, 290: 107–121.
Bouyoucos G J. 1962. Hydrometer method improved for making particle size analyses of soils. Agronomy Journal, 57(5): 464–465.
Buckley D E, Cranston R E. 1971. Atomic absorption analyses of 18 elements from a single decomposition of aluminosilicate. Chemical Geology, 7(4): 273–284.
Chapman H D. 1965. Cation-exchange capacity. In: Black C A. Methods of Soil Analysis. Part 2. Chemical and Microbiological Properties. Madison, WI: Soil Science Society of America, American Society of Agronomy, 891–901.
Conyers E S, McLean E O. 1969. Plant uptake and chemical extractions for evaluating potassium release characteristics of soils. Soil Science Society of America Journal, 33(2): 226–230.
Ghosh B N, Singh R D. 2001. Potassium release characteristics of some soils of Uttar Pradesh hills varying in altitude and their relationship with forms of soil K and clay mineralogy. Geoderma, 104(1–2): 135–144.
Hashemi S S, Abbaslou H. 2016. Potassium reserves in soils with arid and semi-arid climate in southern Iran: a perspective based on potassium fixation. Iran Agricultural Research, 35(2): 88–95.
Hayashi K, Makino N, Shobatake K, et al. 2014. Influence of scenario uncertainty in agricultural inputs on life cycle greenhouse gas emissions from agricultural production systems: the case of chemical fertilizers in Japan. Journal of Cleaner Production, 73: 109–115.
Hosseinpur A R, Sinegani A A S. 2007. Soil potassium–release characteristics and the correlation of its parameters with garlic plant indices. Communications in Soil Science and Plant Analysis, 38(1–2): 107–118.
Islam A, Saha P K, Biswas J C, et al. 2016. Potassium fertilization in intensive wetland rice system: yield, potassium use efficiency and soil potassium status. International Journal of Agricultural Paper, 1(2): 7–21.
Jackson M L. 1975. Soil Chemical Analysis: Advanced Course. Madison, WI: Department of Soils, College of Agriculture, University Wisconsin, 27–224.
Jalali M. 2006. Kinetics of non-exchangeable potassium release and availability in some calcareous soils of western Iran. Geoderma, 135: 63–71.
Jalali M, Zarabi M. 2006. Kinetics of nonexchangeable–potassium release and plant response in some calcareous soils. Journal of Plant Nutrition and Soil Science, 169(2): 196–204.
Johns W D, Grim R E, Bradley F. 1954. Quantitative estimations of clay minerals by diffraction methods. Journal of Sedimentary Research, 24(4): 242–251.
Khademi H, Mermut A R. 1998. Source of palygorskite in gypsiferous Aridisols and associated sediments from central Iran. Clay Minerals, 33(4): 561–578.
Khormali F, Abtahi A. 2003. Origin and distribution of clay minerals in calcareous arid and semi-arid soils of Fars Province, southern Iran. Clay Minerals, 38(4): 511–527.
Kirkman J H, Basker A, Surapaneni A, et al. 1994. Potassium in the Soils of New Zealand—a review. New Zealand Journal of Agricultural Research, 37(2): 207–227.
Kittrick J A, Hope E W. 1963. A procedure for the particle-size separation of soils for X-ray diffraction analysis. Soil Science, 96(5): 312–325.
Komadel P, Madejová J, Stucki J W. 2006. Structural Fe (III) reduction in smectites. Applied Clay Science, 34(1–4): 88–94.
Li Q X, Jia Z Q, Liu T, et al. 2017. Effects of different plantation types on soil properties after vegetation restoration in an alpine sandy land on the Tibetan Plateau, China. Journal of Arid Land, 9(2): 200–209.
Loeppert R H, Suarez D L. 1996. Carbonate and gypsum. In: Sparks D L. Methods of Soil Analysis. Part 3. Chemical Methods. Madison, WI: Soil Science Society of America, American Society of Agronomy, 437–474.
Martin H W, Sparks D L. 1983. Kinetics of nonexchangeable potassium release from two coastal plain soils. Soil Science Society of America Journal, 47(5): 883–887.
McLean E O, Watson M E. 1985. Soil measurements of plant-available potassium. In: Munson R D. Potassium in Agriculture. Madison, WI: Soil Science Society of America, American Society of Agronomy, 277–308.
Mehra O P, Jackson M L. 1960. Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate. In: Swineford A. Clays and Clays Minerals. Washington, DC: Pergamon Press, 317–327.
Mengel K, Kirkby E A. 2001. Principles of Plant Nutrition. Dordrecht: Kluwer Academic Publishers, 481–512.
Mengel K. 2006. Potassium. In: Barker A V, Pilbeam D J. Handbook of Plant Nutrition. London: Taylor and Francis Group, 91–120.
Moterle D F, Kaminski J, dos Santos Rheinheimer D, et al. 2016. Impact of potassium fertilization and potassium uptake by plants on soil clay mineral assemblage in South Brazil. Plant and Soil, 406(1–2): 157–172.
Nabiollahy K, Khormali F, Bazargan K, et al. 2006. Forms of K as a function of clay mineralogy and soil development. Clay Minerals, 41(3): 739–749.
Najafi Ghiri M, Abtahi A, Jaberian F, et al. 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.
Nelson D W, Sommers L E. 1996. Total carbon, organic carbon, and organic matter. In: Sparks D L. Methods of Soil Analysis. Part 3. Chemical Methods. Madison, WI: Soil Science Society of America, American Society of Agronomy, 961–1010.
Owliaie H R, Abtahi A, Heck R J. 2006. Pedogenesis and clay mineralogical investigation of soils formed on gypsiferous and calcareous materials, on a transect, southwestern Iran. Geoderma, 134(1–2): 62–81.
Pratt P F. 1965. Potassium. In: Black C A. Methods of Soil Analysis. Part 2. Chemical and Microbiological Properties. Madison, WI: Soil Science Society of America, American Society of Agronomy, 1022–1030
Raheb A, 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.
Rees G L, Pettygrove G S, Southard R J. 2013. Estimating plant-available potassium in potassium-fixing soils. Communications in Soil Science and Plant Analysis, 44(1–4): 741–748.
Richards L A. 1954. Diagnosis and Improvement of Saline and Alkali Soils (Handbook No. 60). Washington: United States Salinity Laboratory, 1–160.
Schindler F V, Woodard H W, Doolittle J J. 2003. Reduction–oxidation effects on soil potassium and plant uptake. Communications in Soil Science and Plant Analysis, 34(9–10): 1407–1419.
Sharpley A N. 1989. Relationship between soil potassium forms and mineralogy. Soil Science Society of America Journal, 53(4): 1023–1028.
Soil Survey Staff. 2014. Keys to Soil Taxonomy (2nd ed.). Washington, DC: USDA, NRCS, 43–316.
Sparks D L, Huang P M. 1985. Physical chemistry of soil potassium. In: Munson R D. Potassium in Agriculture. Madison, WI: Soil Science Society of America, American Society of Agronomy, 201–276.
Sparks D L. 2000. Bioavailability of soil potassium. In: Sumner M E. Handbook of Soil Science. Boca Raton: CRC Press, 38–52.
Tan D S, Liu Z H, Jiang L H, et al. 2017. Long-term potash application and wheat straw return reduced soil potassium fixation and affected crop yields in North China. Nutrient Cycling in Agroecosystems, 108(2): 121–133.
Tu S X, Guo Z F, Sun J H. 2007. Effect of oxalic acid on potassium release from typical Chinese soils and minerals. Pedosphere, 17(4): 457–466.
Wani M A. 2012. Oxalic acid effect on potassium release from typical rice soils of Kashmir. Communications in Soil Science and Plant Analysis, 43(8): 1136–1148.
Wood R A, Schroeder B L. 1991. Release of non-exchangeable potassium reserves from a range of sugar industry soils. Proceedings of The South African Sugar Technologists' Association, 65: 47–52.
Xie Q Q, Chen T H, Zhou H, et al. 2013. Mechanism of palygorskite formation in the Red Clay Formation on the Chinese Loess Plateau, northwest China. Geoderma, 192: 39–49.
Zhan L P, Li X K, Lu J W, et al. 2014. Potassium fixation and release characteristics of several normal and K-exhausted soils in the middle and lower reaches of the Yangtse River, China. Communications in Soil Science and Plant Analysis, 45(22): 2921–2931.
Zhang Y G, Yang S, Fu M M, et al. 2015. Sheep manure application increases soil exchangeable base cations in a semi-arid steppe of Inner Mongolia. Journal of Arid Land, 7(3): 361–369.