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The increased carbon storage changes with a decrease in phosphorus availability in the organic paddy soil

Suphathida Aumtong(1*), Chakrit Chotamonsak(2), Bundit Somchit(3)

(1) Maejo University, Chiang Mai-Proaw ST., SanSai Chiang Mia, Thailand,50290
(2) Regional Center for Climate and Environmental Studies (RCCES), Department of Geography, Chiang Mai University, Chiang Mai Thailand 50200
(3) Soil Science Program, Faculty of Agricultural Production, Maejo University, Chiang Mai, Thailand, 50290
(*) Corresponding Author


This study aimed to investigate the effect of organic rice farming on the various forms of inorganic phosphorus, the concentration of dissolved organic carbon (DOC) and carbon storage, and the relationship between DOC and P fractions in organic rice farming (ORF). The soil samples were taken from 11 organic plots, and three pseudo-replicates were sampled from individuals of various soil depths. The P-fractions, the soil organic carbon (SOC), DOC, and other soil properties were analyzed by standard methods from soils. The data were analyzed using One-way and Two-way ANOVA and tested using the least significant difference. The results showed that ORF soils had less labile P than conventional rice farming, while ORF had a higher average of DOC, SOC, and C stock than conventional rice soil (P<0.05). Organic fertilizers such as animal manure application and rice straw retention were used for ten years in the ORF. The agricultural practices of ORF would convince the amount of amorphous Fe and Al on soil minerals significantly and would increase the adsorption capacity of the soil mineral surfaces by organic fertilization. The Fe-P fraction responded to the increased adsorption capacity in the ORF and shown along with the DOC and P which were less than in ORF. Both of them were more adsorbed on the surface mineral. Meanwhile, the lower P for nutrient cycling in ORF soil, the lesser the decomposition of DOC and SOC, which then affected the increase of soil C storage.


phosphorus; dissolve organic carbon; amorphous Fe and Al; surface mineral; adsorption

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Audette,Y., O'Halloran, I.P. and Voroney, R. (2016).Kinetics of phosphorus forms applied as inorganic and organic amendments to a calcareous soil. Geoderma, 262, pp. 119124.

Fisk, M., Santangelo, S., and Minick, K. (2015). Carbon mineralization is promoted by phosphorus and reduced by nitrogen addition in the organic horizon of northern hardwood forests. Soil Biology and Biochemistry. 81, pp. 212–218.

FAO.(2021). The state of the world’s land and water resources for food and agriculture: Systems at breaking point. Synthesis report,Website. [online] Available at: http:// [Accessed 15 December 2021].

Ghani, A.D., Dexter, M., and Perrott, K.W. (2003). Hot water extractable carbon in soils: a sensitive measurement for determining impacts of fertilization, grazing and cultivation. Soil Biological and Biochemistry, 35(9), pp. 1231-1243.

Guggenberger, G. and Kaiser, K. (2003). Dissolved organic matter in soil: challenging the paradigm of sorptive preservation. Geoderma, 113(3-4), pp. 293–310.

Guppy, C.N., Menzies, N.W., Moody, P.W., Compton, B.L., and Blameya,F.P.C. (2000). A simplified, sequential, phosphorus fractionation method. Communications In Soil Science And Plant Analysis, 31(11-14), pp. 1981-1991.

Kaiser, K. and Zech, W. (1999). Release of natural organic matter sorbed to oxides and a subsoil. Soil Science Society American Journal, 63(5), pp.1157–1166.

Kaiser, K. and Guggenberger, G. (2000). The role of DOM sorption to mineral surfaces in the preservation of organic matter in soils. Organic Geochemistry, 31(7-8), pp. 711–725.

Kalbitz, K. and Kaiser, K. (2008). Contributions of dissolved organic matter to carbon storage in forest mineral soils. Journal of Plant Nutrition and Soil Science, 171(1) ,pp. 52–60.

Kögel-Knabner, I., Amelung, W., Cao, Z., Fiedler, S., Frenzel, P., Jahn, R., Kalbitz, K., Kölbl, A., and Schloter, M. (2010). Biogeochemistry of paddy soils. Geoderma,157, pp. 1–14.

Murphy, J. and Riley, J.P. (1962). A modified single solution method for the determination of phosphate in natural waters. Analytica Chimica ActaAnal, 27, pp. 31–36.

Nelson, D.W. and Sommers, L.E. 1996. Total carbon, organic carbon, and organic matter. In: Methods of Soil Analysis. In: A.L. Page et al., eds., 2nd ed. Madison, WI: Am. Soc. of Agron., pp. 961-1010.

Oren, A. and Chefetz, B. (2012). Successive sorption–desorption cycles of dissolved organic matter in mineral soil matrices. Geoderm, 189, pp. 108–115.

Pizzeghello, D., Berti, A., Nardi, S. and Morari, F. (2014). Phosphorus-related properties in the profiles of three Italian soils after long-term mineral and manure applications. Agricultural Ecosystem and Environment, 189, pp. 216–228.

Saidy, A.R., Smernik, R.J., Baldock, J.A., Kaiser, K., Sanderman, J. and Macdonald, L.M. (2012). Effects of clay mineralogy and hydrous iron oxides on labile organic carbon stabilisation. Geoderma, 173–174, pp.104–110.

Spohn, M. and Schleuss, P.M., (2019). Addition of inorganic phosphorus to soil leads to desorption of organic compounds and thus to increased soil respiration. Soil Biology and Biochemistry, 130, pp. 220–226.

Strahm, B.D., Harrison, R.B., Terry, T.A., Harrington, T.B., Adams, A.B. and Footen, P.W. (2009). Changes in dissolved organic matter with depth suggest the potential for postharvest organic matter retention to increase subsurface soil carbon pools. Forest Ecology and Management, 258(10), pp. 2347–2352.

Tirol–Padre, A. and Ladha. J.K. (2004). Assessing the reliability of permanganate–oxidizable carbon as an index of soil labile carbon. Soil Science Society of America Journal, 68, pp. 969-978.

Weil, R.R., Islem, K.R., Stien, M.A., Gruver, J.J., and Samson-Liebig, S.E. (2003). Estimate active carbon for soil quality assessment: a simplified method for laboratory and field use. American Journal of Alternative Agriculture, 18(1), pp. 2-17.

Whittingham, M.J. (2011). The future of agri-environment schemes: biodiversity gains and ecosystem and services delivery?. Journal Applied of Ecosystems, 48(3), pp. 509–513.

Yan, X., Wang, D., Zhang, H., Zhang, G, and Wei, Z. (2013). Organic amendments affect phosphorus sorption characteristics in a paddy soil. Agriculture, Ecosystems and Environment, 175, pp. 47–53.

Yan, X., Wei, Z., Hong, Q., Lu, Z. and Wu, J. (2017). Phosphorus fractions and sorption characteristics in a subtropical paddy soil as influenced by fertilizer sources. Geoderma, 295, pp. 80-85.


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