Washed rice water (WRW) is often used as liquid plant fertilizer. However, there is no study on nutrient leaching of soils due to frequent WRW application. Therefore, a column study was undertaken to evaluate the rate of nutrient leaching losses, nutrient retention, and recovery of elements in leachates of three different soil textures irrigated with WRW. The treatments were 3 soil textures and 2 water types. The treatments were evaluated for 8 weeks, and the soils and leachates were measured biweekly. Factorial and repeated measurements in a completely randomized design were therefore employed. Higher cumulative leaching of the elements was found in sandy clay loam soil with 666.29, 378.13, 138.51, 50.82, 44.61, and 27.30 mg L^-1 of K, P, Mg, Ca, NH₄⁺-N, and NO₃^--N, respectively. Higher percentages of elements recovery in leachate were found in the sandy clay loam soil with a range of increase by 37.8–283.1% than the other two soil textures. In contrast, after 8 weeks of WRW application, the clay and silt loam soils had a range of increase in nutrient retention by 0.43–1358.5% than the sandy clay loam, with P and NO₃^--N being the highest and the lowest elements retained, respectively, for all soil textures. This study showed that frequent WRW disposal on sandy textured soils risks higher environmental contamination, mainly due to the soil’s lower water retention and nutrients, leading to nutrient leaching. Therefore, organic amendments should be added to sandy textured soils.

• Alfaro, M. A., Jarvis, S. C., & Gregory, P. J. (2004). Factors affecting potassium leaching in different soils. Soil Use and Management, 20(2), 182-189. https://doi.org/10.1111/j.1475-2743.2004.tb00355.x

• Bahar, A. E. (2016). Pengaruh pemberian limbah air cucian beras terhadap pertumbuhan tanaman kangkung darat (Ipomoea reptans Poir) [Effect of applying washed rice wastewater on the growth of land spinach (Ipomoea reptans Poir)]. Jurnal Ilmiah Mahasiswa Fakultas Pertanian, 3(2), 1-9.

• Bollyn, J., Faes, J., Fritzsche, A., & Smolders, E. (2017). Colloidal-bound polyphosphates and organic phosphates are bioavailable: a nutrient solution study. Journal of Agricultural and Food Chemistry, 65(32), 6762-6770. https://doi.org/10.1021/acs.jafc.7b01483

• Bray, R. H., & Kurtz, L. T. (1945). Determination of total, organic, and available forms of phosphorus in soils. Soil Science, 59(1), 39-46.

• Carstens, J. F., Bachmann, J., & Neuweiler, I. (2018). Effects of organic matter coatings on the mobility of goethite colloids in model sand and undisturbed soil. European Journal of Soil Science, 69(2), 360-369. https://doi.org/10.1111/ejss.12510

• Cavagnaro, T. R., Bender, S. F., Asghari, H. R., & van der Heijden, M. G. A. (2015). The role of arbuscular mycorrhizas in reducing soil nutrient loss. Trends in Plant Science, 20(5), 283-290. https://doi.org/10.1016/j.tplants.2015.03.004

• Chandra, S., Medha, I., & Bhattacharya, J. (2020). Potassium-iron rice straw biochar composite for sorption of nitrate, phosphate, and ammonium ions in soil for timely and controlled release. Science of the Total Environment, 712, Article 136337. https://doi.org/10.1016/j.scitotenv.2019.136337

• Cui, S., Kong, F., Li, Y., Jiang, Z., & Xi, M. (2021). Effect of mineral loaded biochar on the leaching performances of nitrate and phosphate in two contrasting soils from the coastal estuary area. Science of the Total Environment, 779, Article 146346. https://doi.org/10.1016/j.scitotenv.2021.146346

• Drinkwater, L. E., Schipanski, M., Snapp, S., Jackson, L. E. (2017). Ecologically based nutrient management, In S. Snapp & B. Pound (Eds.), Chapter 7: Agroecology and Rural Innovation for Development Agricultural Systems (2nd ed.) (pp. 203-257). Academic Press. https://doi.org/10.1016/B978-0-12-802070-8.00007-4

• Fang, L., Li, J. S., Donatello, S., Cheeseman, C. R., Poon, C. S., & Tsang, D. C. W. (2020). Use of Mg/Ca modified biochars to take up phosphorus from acid-extract of incinerated sewage sludge ash (ISSA) for fertilizer application. Journal of Cleaner Production, 244, Article 118853. https://doi.org/10.1016/j.jclepro.2019.118853

• Gardner, W. H. (1986). Water content. In A. Klute (Ed.), Methods of Soil Analysis: Part 1 Physical and Mineralogical Properties (pp. 493-544) American Society of Agronomy-Soil Science Society of America. https://doi.org/10.2136/sssabookser5.1.2ed.c21

• Gee, G. W., & Bauder, J. W. (1986). Particle size analysis. In A. Klute (Ed.), Methods of Soil Analysis: Part 1 Physical and Mineralogical Properties (pp. 383-411). American Society of Agronomy-Soil Science Society of America. https://doi.org/10.2136/sssabookser5.1.2ed.c15

• He, Q., Feng, C., Hu, Q., Li, R., & Chen, N. (2016). Biological denitrification using rice washing drainage (RWD) as carbon source for removing nitrate from groundwater. Desalination and Water Treatment, 57(46), 21990-21999. https://doi.org/10.1080/19443994.2015.1127780

• He, Q., Feng, C., Peng, T., Chen, N., Hu, Q., & Hao, C. (2016). Denitrification of synthetic nitrate-contaminated groundwater combined with rice washing drainage treatment. Ecological Engineering, 95, 152-159. https://doi.org/10.1016/j.ecoleng.2016.06.043

• Ishak, C. F., & Jusop, S. (2010). Weathered Tropical Soils: The Ultisols and Oxisols. UPM Press.

• Juliano, B. O. (1993). Rice in Human Nutrition. International Rice Research Institute.

• Kleinman, P. J. A., Sharpley, A. N., Wolf, A. M., Beegle, D. B., & Moore Jr, P. A. (2002). Measuring water-extractable phosphorus in manure as an indicator of phosphorus in runoff. Soil Science Society of America Journal, 66(6), 2009-2015. https://doi.org/10.2136/sssaj2002.2009

• Laird, D., Fleming, P., Wang, B., Horton, R., & Karlen, D. (2010). Biochar impact on nutrient leaching from a Midwestern agricultural soil. Geoderma, 158(3-4), 436-442. https://doi.org/10.1016/j.geoderma.2010.05.012

• Liu, S., Kong, F., Li, Y., Jiang, Z., Xi, M., & Wu, J. (2020). Mineral-ions modified biochars enhance the stability of soil aggregate and soil carbon sequestration in a coastal wetland soil. Catena, 193, Article 104618. https://doi.org/10.1016/j.catena.2020.104618

• Macolino, S., & Zanin, G. (2014). Effectiveness of a zeolite-based fertilizer in reducing nutrient leaching in a recently sodded turfgrass. In XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014) (pp. 73-82). Acta Horticulturae. https://doi.org/10.17660/ActaHortic.2016.1122.10

• Manevski, K., Børgesen, C. D., Andersen, M. N., & Kristensen, I. S. (2015). Reduced nitrogen leaching by intercropping maize with red fescue on sandy soils in North Europe: A combined field and modeling study. Plant and Soil, 388, 67-85. https://doi.org/10.1007/s11104-014-2311-6

• McLean, E. O. (1983). Soil pH and lime requirement. In A. L. Page, R. H. Miller & D. R. Keeney (Eds.), Methods of Soil Analysis: Part 2 Chemical and Microbiological Properties (pp.199-224). American Society of Agronomy-Soil Science Society of America. https://doi.org/10.2134/agronmonogr9.2.2ed.c12

• Matichenkov, V., Bocharnikova, E., & Campbell, J. (2020). Reduction in nutrient leaching from sandy soils by Si-rich materials: Laboratory, greenhouse and filed studies. Soil and Tillage Research, 196, Article 104450. https://doi.org/10.1016/j.still.2019.104450

• Mitrogiannis, D., Psychoyou, M., Baziotis, I., Inglezakis, V. J., Koukouzas, N., Tsoukalas, N., Palles, D., Kamitsos, E., Oikonomou, G., & Markou, G. (2017). Removal of phosphate from aqueous solutions by adsorption onto Ca(OH)2 treated natural clinoptilolite. Chemical Engineering Journal, 320, 510-522. https://doi.org/10.1016/j.cej.2017.03.063

• Nabayi, A., Sung, C. T. B., Zuan, A. T. K., & Paing, T. N. (2021). Fermentation of washed rice water increases beneficial plant bacterial population and nutrient concentrations. Sustainability, 13(23), Article 13437. https://doi.org/10.3390/su132313437

• Nabayi, A., Sung, C. T. B., Zuan, A. T. K., Paing, T. N., & Akhir, N. I. M. (2021). Chemical and microbial characterization of washed rice water waste to assess its potential as plant fertilizer and for increasing soil health. Agronomy, 11(12), Article 2391. https://doi.org/10.3390/agronomy11122391

• Nabayi, A., Teh, C. B. S., Ngai, T. P., & Tan, A. K. Z. (2021). Wastewater from washed rice water as plant nutrient source: Current understanding and knowledge gaps. Pertanika Journal of Science and Technology, 29(3), 1347-1369. https://doi.org/10.47836/pjtas.29.3.11

• Petrucci, R. H., Herring, F. G., Madura, J. D., & Bissonnette, C. (2011). General Chemistry: Principles and Modern Applications. Pearson Prentice Hall.

• Pratiwi, E. P. A., Hillary, A. K., Fukuda, T., & Shinogi, Y. (2016). The effects of rice husk char on ammonium, nitrate and phosphate retention and leaching in loamy soil. Geoderma, 277, 61-68. https://doi.org/10.1016/j.geoderma.2016.05.006

• Richards, L. A. (1947). Pressure-membrane apparatus, construction and use. Agricultural Engineering, 28(10), 451-454.

• Riddle, M., Cederlund, H., Schmieder, F., & Bergström, L. (2018). Magnetite-coated biochar as a soil phosphate filter: From laboratory to field lysimeter. Geoderma, 327, 45-54. https://doi.org/10.1016/j.geoderma.2018.04.025

• Sairi, F., Ismail, N., & Ibrahim, N. (2018). The effect of FRAW towards the growth of chilli seedlings and its associated microorganisms. Malaysian Journal of Microbiology, 14(6), 606-610.

• Siagian, A. S. (2018). Respon pemberian pupuk organik cair air cucian beras terhadap pertumbuhan dan produksi tanaman selada hijau (Lactuca Satvia L.) [Response of organic fertilizer to liquid water wash on growth and production of lettuce (Lactuca sativa L)]. (Unpublished diploma thesis). University of Medan Area Faculty of Agricultural, Indonesia. http://repository.uma.ac.id/handle/123456789/10578

• Skjemstad, J. O., & Baldock, J. A. (2007). Total and organic carbon. In M. R. Carter & E. G. Gregorich (Eds.), Soil Sampling and Methods of Analysis (2nd ed.) (pp. 225-239). CRC Press. https://doi.org/10.1201/9781420005271

• Stevenson, F. J. (1996). Nitrogen-organic forms. In D. L. Sparks, A. L. Page, P. A. Helmke, R. H. Loeppert, P. N. Soltanpour, M. A. Tabatabai, C. T. Johnston & M. E. Sumner (Eds.), Methods of Soil Analysis: Part 3 Chemical Methods (pp. 1185-1200). Wiley. https://doi.org/https://doi.org/10.2136/sssabookser5.3.c39

• Tahir, S., & Marschner, P. (2017). Clay addition to sandy soil reduces nutrient leaching-effect of clay concentration and ped size. Communications in Soil Science and Plant Analysis, 48(15), 1813-1821. https://doi.org/10.1080/00103624.2017.1395454

• Teh, C. B. S., Ishak, C. F., Rosazlin, A., Othman, R., Panhwar, Q. A., & Aziz, M. M. A. (2017). Soil properties (physical, chemical, biological, mechanical) In M. A. Ashraf, R. Othman & C. F. Ishak (Eds.), Soils of Malaysia, (pp. 103-154). CRC Press. https://doi.org/10.1201/b21934

• Thomas, G. W. (1982). Exchangeable cations. In A. L. Page, R. H. Miller & D. R. Keeney (Eds.), Methods of Soil Analysis: Part 2 Chemical and Microbiological Properties (pp. 159-165). American Society of Agronomy-Soil Science Society of America.

• Villagra-Mendoza, K., & Horn, R. (2018). Effect of biochar addition on hydraulic functions of two textural soils. Geoderma, 326, 88-95. https://doi.org/10.1016/j.geoderma.2018.03.021

• Wardiah, W., Linda, L., & Rahmatan, H. (2014). Potensi limbah air cucian beras sebagai pupuk organik cair pada pertumbuhan pakchoy (Brassica rapa L.) [Potential of washed rice water as a liquid organic fertilizer on the growth of pakchoy (Brassica rapa L.)]. Jurnal Biologi Edukasi, 6(1), 34-38.

• Wu, L., Wei, C., Zhang, S., Wang, Y., Kuzyakov, Y., & Ding, X. (2019). MgO-modified biochar increases phosphate retention and rice yields in saline-alkaline soil. Journal of Cleaner Production, 235, 901-909. https://doi.org/10.1016/j.jclepro.2019.07.043

• Wulandari, C. G. M., Muhartini, S., & Trisnowati, S. (2012). Pengaruh air cucian beras merah dan beras putih terhadap pertumbuhan dan hasil selada (Lactuca sativa L.) [Effect of washed brown and white rice water on the growth and yield of lettuce (Lactuca sativa L.)]. Vegetalika, 1(2), 24-35.

• Yaghi, N., & Hartikainen, H. (2013). Enhancement of phosphorus sorption onto light expanded clay aggregates by means of aluminum and iron oxide coatings. Chemosphere, 93(9), 1879-1886. https://doi.org/10.1016/j.chemosphere.2013.06.059

• Yin, S., Bai, J., Wang, X., Wang, X., Zhang, G., Jia, J., Li, X., & Liu, X. (2020). Hydrological connectivity and herbivores control the autochthonous producers of coastal salt marshes. Marine Pollution Bulletin, 160, Article 111638. https://doi.org/10.1016/j.marpolbul.2020.111638

• Zeng, Q., Qin, L., Bao, L., Li, Y., & Li, X. (2016). Critical nutrient thresholds needed to control eutrophication and synergistic interactions between phosphorus and different nitrogen sources. Environmental Science and Pollution Research, 23, 21008-21019. https://doi.org/10.1007/s11356-016-7321-x