Applied Chemical Engineering

Phosphorus (P) is an essential element for crop production but its non-renewable natural sources are on the verge of depletion. The few remaining P sources may be depleted in the next 30–50 years. This calls for P recycling strategies with biochar application being an appealing approach. However, very limited information is available on the use of biochar as a P source and how it affects the various P fractions in tropical paddy soils. Therefore, the aim of this study was to establish whether biochar could potentially be used as a P source. A sample tropical paddy soil was treated with 1% biochar (derived from maize straw) and/or potassium dihydrogen phosphate, waterlogged and then incubated in airtight amber glass containers at 25 ℃, to mimic tropical paddy soil conditions. Soil aliquots were sampled periodically, followed by extraction and analysis of P fractions. The generated data was subjected to correlation analysis to explore the relationships among the P fractions. The study established that under anaerobic conditions, biochar amendment and P fertilization had no effect on aluminium bound P, calcium bound P, occluded P, moderately labile P and non-labile P. Additional P increased loosely sorbed P but biochar reduced it, even when combined with supplementary P fertilization. It was established that biochar increased iron bound P and to a greater extent with P fertilization. Additional P increased labile P while it was not affected by biochar. Apart from the effect on loosely sorbed P, biochar performed as well as the P fertilizer—or better in case of Fe-bound P. There is therefore promising potential for utilization of biochar as an alternative renewable P source.

1. Micheli E, Schád P, Spaargaren O, et al. World Reference Base for Soil Resources 2006: A Framework for International Classification, Correlation and Communication. FAO; 2006.

2. Fageria NK, Baliga VC. Enhancing nitrogen use efficiency in crop plants. Advances in Agronomy 2005; 88: 97–185. doi: 10.1016/S0065-2113(05)88004-6

3. Mahmoud E, Ibrahim M, Lamyaa AAER, Asmaa K. Effects of biochar and phosphorus fertilizers on phosphorus fractions, wheat yield and microbial biomass carbon in vertic torriflurents. Communications in Soil Science and Plant Analysis 2018; 50(3): 362–372. doi: 10.1080/00103624.2018.1563103

4. Eghball B, Binford GD, Battensperger D. Phosphorus movement and adsorption in soil receiving long term manure and fertilizer application. Journal for Environmental Quality 1996; 25(6): 1339–1343. doi: 10.2134/jeq1996.00472425002500060024x

5. Smeck NE. Phosphorus dynamics in soils and landscapes. Geoderma 1985; 36(3): 185–199. doi: 10.1016/0016-7061(85)90001-1

6. U.S. Geological Survey. Mineral Commodity Summaries 2009. U.S. Geological Survey; 2009.

7. Li F, Liang X, Niyungeko C, et al. Effects of biochar amendments on soil phosphorus transformation in agricultural soils. Advances in Agronomy 2019; 158: 131–172. doi: 10.1016/bs.agron.2019.07.002

8. Glaser B, Lehr VI. Biochar effects on phosphorus availability in agricultural soils: A meta-analysis. Scientific Reports 2019; 9: 9338. doi: 10.1038/s41598-019-45693-z

9. Stavkova J, Marousek J. Novel sorbent shows promising financial results on P recovery from sludge water. Chemosphere 2021; 276: 130097. doi: 10.1016/j.chemosphere.2021.130097

10. Deluca TH, Gundale MJ, Meckenzie MD, Jones DL. Biochar effects on soil nutrient transformations. Available online: https://www.researchgate.net/publication/302558326 (accessed on 21 July 2023).

11. Rafique M, Ortas I, Rizwan M, et al. Residual effects of biochar and phosphorus on growth and nutrient accumulation by maize (Zea mays L.) amended with microbes in texturally different soils. Chemosphere 2020; 238: 124710. doi: 10.1016/j.chemosphere.2019.124710

12. Maranguit D, Guillaume T, Kuzyakov Y. Effects of flooding on phosphorus and iron mobilization in highly weathered soils under different land-use types: Short-term effects and mechanisms. Catena 2017; 158: 161–170. doi: 10.1016/j.catena.2017.06.023

13. Chacon N, Dezzeo N, Munoz B, Rodriquez J. Implications of soil organic carbon and the biogeochemistry of iron and aluminium on soil phosphorus distribution in flooded forests of the lower Orinoco river, Venezuela. Biogeochemistry 2005; 73: 555–566. doi: 10.1007/s10533-004-1773-7

14. Lehmann J, Joseph SM. Biochar for Environmental Management: Science and Technology. Earthscan; 2009. pp. 1812–1836.

15. Okalebo JR, Waigwa MW, Othieno CO. Phosphorus availability as affected by the application of phosphate rock combined with organic materials to acid soils in western Kenya. Experimental Agriculture 2003; 39(4): 395–407. doi: 10.1017/S0014479703001248

16. Hue NV, Amien I. Aluminium detoxification with green manures. Soil Science and Plant Analysis 1989; 20(15): 1499–1511. doi: 10.1080/00103628909368164

17. Kisinyo PO, Opala PA, Gudu SO, et al. Recent advances towards understanding and managing Kenyan acid soils for improved crop production. African Journal of Agricultural Research 2014; 9(31): 2397–2408. doi: 10.5897/AJAR2013.8359

18. Omwonga RN, Lelei JJ, Macharia JK. Comparative effects of soil amendments on phosphorus use and agronomic efficiencies of two maize hybrids in acidic soils of Molo County Kenya. American Journal of Experimental Agriculture 2013; 3(4): 939–958. doi: 10.9734/AJEA/2013/4380

19. Owino CO, Owuor OP, Sigunga DO. Elucidating the causes of low phosphorus levels in ferrasols of Siaya county, western Kenya. Journal of Soil Science and Environmental Management 2015; 234: 1–7. doi: 10.5897/JSSEM15

20. Camilla S. Effects of biochar amendment in soils from Kisumu Kenya. Available online: https://stud.epsilon.slu.se/5218/1/soderberg_c_130124.pdf (accessed on 2 May 2023).

21. Aslund I. Effects of applying biochar to soils from Embu; Effects on crop residue decomposition and soil fertility under varying soil moisture levels. Available online: https://stud.epsilon.slu.se/4008/ (accessed on 2 May 2023).

22. Andrew CD, Abigail C. Biochar increases maize yields and smallholder profitability: Evidence from Western Kenya. Available online: http://andrewcd.berkeley.edu/ACD_AJC_SS_Kenya_WorkingPaper.pdf (accessed on 2 May 2023).

23. Kätterer T, Roobroeck D, Andrén O, et al. Biochar addition persistently increased soil fertility and yield in maize-soybean rotations over ten years in sub-humid Kenya. Field Crops Research 2019; 235: 18–26. doi: 10.1016/j.fcr.2019.02.015

24. Ernsting A. Biochar—A Climate Smart Solution? Bischöflfliches Hilfswerk MISEREOR; 2011.

25. Ige DV, Akinremi OO, Flaten DN. Environmental index for estimating the risk of phosphorus loss in calcerous soils of Minetoba. Journal of Environmental Quality 2005; 34(6): 1944–1951. doi: 10.2134/jeq2004.0468

26. Sah RN, Mikkelson DS. Phosphorus behavior in flooded-drained soils. Effects on phosphorus sorption. Soil Society of America Journal 1989; 53(6): 1718–1722. doi: 10.2136/sssaj1989.03615995005300060018x

27. Stephens D, Hutsch BW, Eschholz T, et al. Waterlogging may inhibit plant growth primarily by nutrient deficiency rather than nutrient toxicity. Plant Soil Environment 2005; 51(12): 545–552. doi: 10.17221/3630-PSE

28. Parker AK, Beck MB. Iron reduction and phosphorus release from lake sediments and horizon soil. Incubation studies to explore phosphorus cycling. In: Proceedings of the 2003 Georgia Water Resources Conference; 23–24 April 2003; Athens, Georgia. pp. 1–5.

29. Zhang Y, Lin X, Werner W. The effect of soil flooding on the transformation of iron oxide and the adsorption/desorption behavior of phosphate. Plant Nutrition and Soil Science 2003; 166(1): 68–75. doi: 10.1002/jpln.200390014

30. Eduah JO, Abekoe MK, Breuning-Madsen H, Andersen MN. Phosphorus fractionation and sorption characteristics of biochar amended soils in Ghana. In: Proceedings of the Conference on International Research on Food Security, Natural Resource Management and Rural Development; 20–22 September 2017; Bonn, Germany. pp. 7–14.

31. Kalyani K, Saikja V, Babu PS, et al. Effect of organic and inorganic phosphorus on inorganic phosphorus fractions in soil of soybean crop. Journal of Pharmacognosy and Phytochemistry 2015; 7(5): 23–27.

32. Kliestik T, Nica E, Musa H, et al. Networked, smart and responsive devices in industry 4.0 manufacturing systems. Economics, Management, and Financial Markets 2020; 15(3): 23–29. doi: 10.22381/EMFM15320203

33. Kinaro ZO. Wetland Conversion to Large-Scale Agricultural Production; Implications on the Livelihoods of Rural Communities, Yala Swamp, Lake Victoria Basin, Kenya [Master’s thesis]. Linkopings University; 2008.

34. Zhai L, Caiji Z, Liu J, et al. Short-term effects of maize residue biochar on phosphorus availability in two soils with different phosphorus sorption capacities. Biology and Fertility of Soils 2015; 51: 113–122. doi: 10.1007/s00374-014-0954-3

35. Jia M, Fang W, Yongrong B, et al. Effects of pH and metal ions on oxytetracycline sorption to maize straw derived biochar. Bioresource Technology 2013; 136: 87–93. doi: 10.1016/j.biortech.2013.02.098

36. APHA. Standard method for examination of water and waste water. Journal of Public Health 1995; 56(3): 23–89.

37. Pierzynski GM. Methods of phosphorus analysis for soil sediments, residuals and waters. Available online: http://www.sera17.ext.vt.edu/Documents/P_Methods2ndEdition2009.pdf (accessed on 21 July 2023).

38. Chang SC, Jackson ML. Fractionation of soil phosphorus. Soil Science 1957; 84: 133–144. doi: 10.1097/00010694-195708000-00005

39. Zhang H, Chen C, Gray EM, et al. Roles of biochar in improving phosphorus availability in soils: A phosphate adsorbent and a source of available phosphorus. Geoderma 2016; 276: 1–6. doi: 10.1016/j.geoderma.2016.04.020

40. Kim JG, Hyungi M, Minsuk K. Assessing phosphorus availability in a high pH, biochar amended soil under inorganic and organic fertilization. Ecology and Resilient Infrastructure 2018; 5(1): 11–18. doi: 10.17820/eri.2018.5.1.011

41. Ponnamperuma FM. The chemistry of submerged soils. Advances in Agronomy 1972; 24: 29–96. doi: 10.1016/S0065-2113(08)60633-1

42. Xu G, Junna S, Shao H, et al. Biochar had effects on phosphorus sorption and desorption in three soils with differing acidity. Ecological Engineering 2014; 62: 54–60. doi: 10.1016/j.ecoleng.2013.10.027

43. Deluca TH, Mackenzie MD, Gundale MJ, Jones DL. Biochar effects on soil nutrient transformation. In: Lehmann J, Joseph S (editors). Biochar for Environmental Management Science and Technology. Earthscan; 2009. pp. 251–280.

44. Yuan JH, Xu RK, Zhang H. The forms of alkalis in the biochar produced from crop residues at different temperatures. Biological Resources and Technology 2012; 102(3): 3488–3499. doi: 10.1016/j.biortech.2010.11.018

45. Abolfazli F, Forghani A, Norouzi M. Effect of phosphorus and organic fertilizers on phosphorus fractions in submerged soils. Journal of Soil Science and Plant Nutrition 2012; 12(2): 349–362. doi: 10.4067/S0718-95162012000200014

46. Kulhánek M, Černý J, Balík J, et al. Changes of soil bioavailable phosphorus content in the long-term field fertilizing experiment. Soil and Water Research 2019; 14: 240–245. doi: 10.17221/175/2018-SWR

47. Marousek J, Kolar L, Strnecky O, et al. Modified biochar present an economic challenge to phosphate management in wastewater treatment plants. Journal of Cleaner Production 2020; 272: 123015. doi: 10.1016/j.jclepro.2020.123015