doi:10.48130/cas-0025-0014

[1]

FAO. 2018. The state of food security and nutrition in the world. Building climate resilience for food security and nutrition. www.fao.org/3/I9553EN/i9553en.pdf. (Accessed on 24-02-2023)

[2]

DCS. 2020. National Accounts of Sri Lanka. Department of Census and Statistics, Ministry of Finance, Economy and Policy Development, Sri Lanka. www.statistics.gov.lk/Resource/en/NationalAccounts/2010/reports/Production/2020.08.04/detail_note_2020q1_english.pdf

[3]

Punyawardena BVR. 2010. Climate of the Dry zone of Sri Lanka. In Soils of the Dry Zone of Sri Lanka. Special publication, No. 7, eds. Mapa RB, Somasiri S, Dassanayake AR. Peradeniya, Sri Lanka: Soil Science Society of Sri Lanka. pp. 9–26 doi: 10.13140/RG.2.2.26445.15847

[4]

Imbulana L. 2006. Water allocation between agriculture and hydropower: a case study of Kalthota irrigation scheme, Sri Lanka. In Global Theory, Emerging Practice and Local Needs. Integrated Water Resource Management, eds. Mollinga PP, Dixit A, Athukorala K. Vol. 1. New Delhi, India: Sage Publications. pp. 219–48 https://api.semanticscholar.org/CorpusID:128332919

[5]

DOA. 2020. Rice Cultivation. Colombo, Sri Lanka: Rice Research and Development Institute, Department of Agriculture, Sri Lanka. https://doa.gov.lk/rrdi_homepage (Accessed on 13-01-2023)

[6]

Panabokke CR. 1978. Rice soils of Sri Lanka. In: Soil and Rice. Los Banos, The Phillipines: International Rice Research Institute. pp. 19–35

[7]

Smith JL, Doran JW. 1996. Measurement and use of pH and electrical conductivity for soil quality analysis, In Methods for Assessing Soil Quality, eds. Doran JW, Jones AJ. Madison, WI: Soil Science Society of America. pp. 169–85 doi: 10.2136/sssaspecpub49.c10

[8]

Husson O, Brunet A, Babre D, Charpentier H, Durand M, et al. 2018. Conservation Agriculture systems alter the electrical characteristics (Eh, pH and EC) of four soil types in France. Soil and Tillage Research 176:57−68

doi: 10.1016/j.still.2017.11.005

[9]

McCauley A, Scientist S, Jones C, Jacobsen J. 2009. Soil pH and organic matter. Nutrient Management Module 8:1−12

[10]

Hossain N, Muhibbullah M, Ali KMB, Molla MH. 2015. Relationship between soil salinity and physico-chemical properties of paddy field soils of Jhilwanja union, Cox’s Bazar, Bangladesh. Journal of Agricultural Science 7:166−80

doi: 10.5539/jas.v7n10p166

[11]

Yan F, Schubert S, Mengel K. 1996. Soil pH increase due to biological decarboxylation of organic anions. Soil Biology and Biochemistry 28:617−24

doi: 10.1016/0038-0717(95)00180-8

[12]

Zeng L, Shannon MC. 2000. Salinity effects on seedling growth and yield components of rice. Crop Science 40:996−1003

doi: 10.2135/cropsci2000.404996x

[13]

Hetti Arachchige I, Marambe B, Nijamudeen M, Kadupitiya H, Sirisena D, et al. 2023. Distribution of exchangeable magnesium in lowland rice-cultivated soils of Sri Lanka as affected by the differences in climate, soil, and water source. Applied Environmental Research 45:027

doi: 10.35762/aer.2023027

[14]

Evans CD, Jones TG, Burden A, Ostle N, Zieliński P, et al. 2012. Acidity controls on dissolved organic carbon mobility in organic soils. Global Change Biology 18:3317−31

doi: 10.1111/j.1365-2486.2012.02794.x

[15]

Rubasinghe RT, Gunatilake SK, Chandrajith R. 2021. Climatic control of major and trace elements in paddy soils from wet and dry regions of Sri Lanka. Environmental Challenges 5:100361

doi: 10.1016/j.envc.2021.100361

[16]

Bandara WMJ. 2005. Nutrient requirement and identification of nutrient deficiencies in rice. Soil Science Society of Sri Lanka, Bulletin no 4:40

[17]

Mandal AK, Yadav PK, Dhakal KH. 2021. Comparative study of evaluation of soil fertility status in rice zone, Morang. Tropical Agro Ecosystem 2:12−25

doi: 10.26480/taec.01.2021.12.25

[18]

Fageria NK, Baligar VC, Clark RB. 2002. Micronutrients in crop production. Advances in Agronomy 77:185−268

doi: 10.1016/S0065-2113(02)77015-6

[19]

Ren H, Wang H, Qi X, Yu Z, Zheng X, et al. 2021. The damage caused by decline disease in bayberry plants through changes in soil properties, rhizosphere microbial community structure and metabolites. Plants 10:2083

doi: 10.3390/plants10102083

[20]

Kekane SS, Chavan RP, Shinde DN, Patil CL, Sagar SS. 2015. A review on physico-chemical properties of soil. International Journal of Chemical Studies 3:29−32

[21]

Zhang R, Wienhold BJ. 2002. The effect of soil moisture on mineral nitrogen, soil electrical conductivity, and pH. Nutrient Cycling in Agroecosystem 63:251−54

doi: 10.1023/A:1021115227884

[22]

Lathiff MA. 2007. Electrical conductivity. In Manual of Soil Sampling and Analysis, eds. Dharmakeerthi RS, Indraratne SP, Kumaragamage D. Sri Lanka: Soil Science Society of Sri Lanka. pp. 51−53 https://dl-rri.nsf.gov.lk//handle/1/2298

[23]

Rathnayake WMUK, De Silva RP, Dayawansa NDK. 2015. Variability of some important soil chemical properties of rainfed low land paddy fields and its effect on land suitability for rice cultivation. Tropical Agricultural Research 26:506−15

doi: 10.4038/tar.v26i3.8113

[24]

Brubaker SC, Jones AJ, Lewis DT, Frank K. 1993. Soil properties associated with landscape position. Soil Science Society of America Journal 57:235−39

doi: 10.2136/sssaj1993.03615995005700010041x

[25]

Huang L, Liu X, Wang Z, Liang Z, Wang M, et al. 2017. Interactive effects of pH, EC and nitrogen on yields and nutrient absorption of rice (Oryza sativa L.). Agricultural Water Management 194:48−57

doi: 10.1016/j.agwat.2017.08.012

[26]

Wang S, Gao B, Li Y, Mosa A, Zimmerman AR, et al. 2015. Manganese oxide-modified biochars: preparation, characterization, and sorption of arsenate and lead. Bioresource Technology 181:13−17

doi: 10.1016/j.biortech.2015.01.044

[27]

Guo X, Li H, Yu H, Li W, Ye Y, et al. 2018. Drivers of spatio-temporal changes in paddy soil pH in Jiangxi Province, China from 1980 to 2010. Scientific Report 8:2702

doi: 10.1038/s41598-018-20873-5

[28]

Kadupitiya HK, Madushan RND, Rathnayake UK, Thilakasiri R, Dissanayaka SB, et al. 2021. Use of smartphones for rapid location tracking in mega scale soil sampling. Open Journal of Applied Science 11:239−53

doi: 10.4236/ojapps.2021.113017

[29]

Dharmakeerthi RS, Indraratne SP, Kumaragamage D. 2007. Manual of Soil Sampling and Analysis. Sri Lanka: Soil Science Society of Sri Lanka. pp. 51−53 https://dl-rri.nsf.gov.lk//handle/1/2298

[30]

Cheng W, Padre AT, Shiono H, Sato C, Nguyen-Sy T, et al. 2017. Changes in the pH, EC, available P, SOC and TN stocks in a single rice paddy after long-term application of inorganic fertilizers and organic matters in a cold temperate region of Japan. Journal of Soils and Sediments 17:1834−42

doi: 10.1007/s11368-016-1544-9

[31]

Fageria NK, Santos AB, Lins IDG, Camargo SL. 1997. Characterization of fertility and particle size of várZea soils of Mato Grosso and Mato Grosso do sul states of Brazil. Communications in Soil Science and Plant Analysis 28:37−47

doi: 10.1080/00103629709369770

[32]

Yu Y, Yang J, Zeng S, Wu D, Jacobs DF, et al. 2017. Soil pH, organic matter, and nutrient content change with the continuous cropping of Cunninghamia lanceolata plantations in South China. Journal of Soils and Sediments 17:2230−38

doi: 10.1007/s11368-016-1472-8

[33]

Chandrasekara C, Rajapaksha I, Dissanayake S, Kadupitiya H, Sirisena D, et al. 2024. Effects of climate, soil and water source on the distribution of bioavailable iron in low-land paddy soils of Sri Lanka. Applied Geochemistry 160:105875

doi: 10.1016/j.apgeochem.2023.105875

[34]

Sugathas S, Neththasinghe NASA, Sirisena DN, Thilakasiri R, Ariyarathna M, et al. 2024. Effects of agro-climatic zones, soil orders, and irrigation types on the exchangeable cadmium in paddy soils. Soil & Environmental Health 2:100078

doi: 10.1016/j.seh.2024.100078

[35]

Šimek M, Cooper JE. 2002. The influence of soil pH on denitrification: progress towards the understanding of this interaction over the last 50 years. European Journal of Soil Science 53:345−54

doi: 10.1046/j.1365-2389.2002.00461.x

[36]

Aciego Pietri JC, Brookes PC. 2008. Nitrogen mineralisation along a pH gradient of a silty loam UK soil. Soil Biology and Biochemistry 40:797−802

doi: 10.1016/j.soilbio.2007.10.014

[37]

Blackwell M, Darch T, Haslam R. 2019. Phosphorus use efficiency and fertilizers: future opportunities for improvements. Frontiers in Agricultural Science & Engineering 6:332−40

doi: 10.15302/J-FASE-2019274

[38]

Kannan P, Paramasivan M, Marimuthu S, Swaminathan C, Bose J. 2021. Applying both biochar and phosphobacteria enhances Vigna mungo L. growth and yield in acid soils by increasing soil pH, moisture content, microbial growth and P availability. Agriculture, Ecosystem and Environment 308:107258

doi: 10.1016/j.agee.2020.107258

[39]

Gentili R, Ambrosini R, Montagnani C, Caronni S, Citterio S. 2018. Effect of soil pH on the growth, reproductive investment and pollen allergenicity of Ambrosia artemisiifolia L. Frontiers in Plant Science 9:1335

doi: 10.3389/fpls.2018.01335

[40]

DCS. 2015. Paddy extent sown 1976-2015. Agriculture and Environment Statistics Division. Department of Census and Statistics of Sri Lanka. www.statistics.gov.lk/Agriculture/StaticalInformation/PaddyStatistics/SownExtent1976-2015 (Accessed on 02-03-2023)

[41]

Liu ZP, Shao MA, Wang YQ. 2013. Large-scale spatial interpolation of soil pH across the Loess Plateau, China. Environmental Earth Science 69:2731−41

doi: 10.1007/s12665-012-2095-z

[42]

Vašák F, Černý J, Buráňová Š, Kulhánek M, Balík J. 2015. Soil pH changes in long-term field experiments with different fertilizing systems. Soil and Water Resource 10:19−23

doi: 10.17221/7/2014-SWR

[43]

Indraratne SP. 2020. Soil mineralogy, In The Soils of Sri Lanka, ed. Mapa RB. Switzerland: Springer, Cham. pp. 35−47 doi: 10.1007/978-3-030-44144-9_4

[44]

Rathnayake WMUK, Sirisena DN, Wanninayake WMN. 2015. Assessment of temporal variation of soil salinity in paddy fields in Puttalam district. Annals of Sri Lanka Department of Agriculture 17:124−132

[45]

Nayakekorale HB. 2020. Soil degradation. In The Soils of Sri Lanka, ed. Mapa RB. Switzerland: Springer, Cham. pp. 103−18 doi: 10.1007/978-3-030-44144-9_9

[46]

Soepraptohardjo M, Suhardjo H. 1978. Rice soils of Indonesia. In Soils and Rice. Philippines: International Rice Research Institute. pp. 99–115

[47]

Flach KW, Slusher DF. 1978. Soils used for rice culture in the United States. In Soils and Rice, eds. Mapa RB, Somasiri S, Dassanayake AR. Los Banos, Philippines: International Rice Research Institute. pp. 199–214

[48]

Dissanayake R, Kahrood HV, Dimech AM, Noy DM, Rosewarne GM, et al. 2020. Development and application of image-based high-throughput phenotyping methodology for salt tolerance in lentils. Agronomy 10:1992

doi: 10.3390/agronomy10121992

[49]

Lynn WC, Ahrens RJ, Smith AL. 2002. Soil minerals, their geographic distribution, and soil taxonomy. Soil Mineralogy with Environmental Applications 7:691−709

doi: 10.2136/sssabookser7.c23

[50]

Kumaragamage D, Kendaragama KMA, Mapa RB, Somasiri S, Dassananyaka AR. 2010. Risk and limitations of dry zone soils. In Soils of the Dry Zone of Sri Lanka. Special publication No. 7, eds. Mapa RB, Somasiri S, Dassanayake AR. Peradeniya, Sri Lanka: Soil Science Society of Sri Lanka. pp. 239−58

[51]

Zhang YY, Wu W, Liu H. 2019. Factors affecting variations of soil pH in different horizons in hilly regions. PLoS One 14:e0218563

doi: 10.1371/journal.pone.0218563

[52]

Purwanto BH, Alam S. 2020. Impact of intensive agricultural management on carbon and nitrogen dynamics in the humid tropics. Soil Science and Plant Nutrition 66:50−59

doi: 10.1080/00380768.2019.1705182

[53]

Indraratne SP. 2006. Occurrence of organo-mineral complexes in relation to clay mineralogy of some Sri Lankan soils. Journal of Natural Sciences Foundation of Sri Lanka 34:29−35

doi: 10.4038/jnsfsr.v34i1.2073

[54]

Chandrajith R, Seneviratna S, Wickramaarachchi K, Attanayake T, Aturaliya TNC, et al. 2010. Natural radionuclides and trace elements in rice field soils in relation to fertilizer application: study of a chronic kidney disease area in Sri Lanka. Environmental Earth Sciences 60:193−201

doi: 10.1007/s12665-009-0179-1

[55]

Kashem MA, Singh BR. 2001. Metal availability in contaminated soils: II. Uptake of Cd, Ni and Zn in rice plants grown under flooded culture with organic matter addition. Nutrient Cycling in Agroecosystem 61:257−66

doi: 10.1023/A:1013724521349

[56]

Ponnamperuma FN. 1972. The chemistry of submerged soils. Advances in Agronomy 24:29−96

doi: 10.1016/S0065-2113(08)60633-1

[57]

Fageria NK, Carvalho GD, Santos AB, Ferreira EPB, Knupp AM. 2011. Chemistry of lowland rice soils and nutrient availability. Communications in Soil Science and Plant Analysis 42:1913−33

doi: 10.1080/00103624.2011.591467

[58]

Kumari MKN, Pathmarajah S, Dayawansa NDK, Nirmanee KGS. 2016. Evaluation of groundwater quality for irrigation in Malwathu Oya cascade-I in Anuradhapura District of Sri Lanka. Tropical Agricultural Research 27:310−24

doi: 10.4038/tar.v27i4.8209

[59]

Abeysingha NS, Silva DSMD, Duminda DMS. 2018. Hydro chemical assessment of agro-well water for irrigation in Thalawa block in Mahaweli system-H in Anuradhapura, Sri Lanka. Journal of Agricultural Science, Sri Lanka 13:186−99

doi: 10.4038/jas.v13i3.8393

[60]

Kendaragama KMA. 2000. Quality of agro-well water in the Dryzone-A case study in the permeable, well-drained, coarse-textured soils in Anuradapura district. Soil Science Society of Sri Lanka 12:26−33

[61]

Jayakody AN. 2006. Large diameter shallow Agro-wells–a national asset or a burden for the nation? Journal of Agricultural Sciences 2:1−10

doi: 10.4038/jas.v2i1.8108

[62]

Aizat AM, Roslan MKM, Wan Nor Azmin Sulaiman, Karam DS. 2014. The relationship between soil pH and selected soil properties in 48 years logged-over forest. International Journal of Environmental Science 4:1129−40

[63]

Chandrajith R, Dissanayake CB, Tobschall HJ. 2005. The abundances of rarer trace elements in paddy (rice) soils of Sri Lanka. Chemosphere 58:1415−20

doi: 10.1016/j.chemosphere.2004.09.090

[64]

Hassan P, Jusop S, Ismail R, Aris AZ, Ali Panhwar QA. 2016. Land quality of an acid sulfate soil area in Kelantan Plains, Malaysia and its effect on the growth of rice. Asian Journal of Agriculture and Food Sciences 4:124−44

[65]

Shamshuddin J, Elisa Azura A, Shazana MARS, Fauziah CI, Panhwar QA, et al. 2014. Properties and management of acid sulfate soils in Southeast Asia for sustainable cultivation of rice, oil palm, and cocoa. Advances in Agronomy 124:91−142

doi: 10.1016/B978-0-12-800138-7.00003-6

[66]

Dent DL. 1986. Acid Sulfate Soils: A Baseline for Research and Development. International Institute for Land Reclamation and Improvement. Wageningen, the Netherlands: ILRI Publication. 204 pp. https://edepot.wur.nl/61984

[67]

Neina D. 2019. The role of soil pH in plant nutrition and soil remediation. Applied and Environmental Soil Science 2019:5794869

doi: 10.1155/2019/5794869

[68]

Liang Q, Chen H, Gong Y, Fan M, Yang H, et al. 2012. Effects of 15 years of manure and inorganic fertilizers on soil organic carbon fractions in a wheat-maize system in the North China Plain. Nutrient Cycling in Agroecosystem 92:21−33

doi: 10.1007/s10705-011-9469-6

[69]

Kizilkaya R, Dengiz O. 2010. Variation of land use and land cover effects on some soil physico-chemical characteristics and soil enzyme activity. Zemdirbyste-Agriculture 97:15−24

[70]

Wang L, Huang D. 2021. Nitrogen and phosphorus losses by surface runoff and soil microbial communities in a paddy field with different irrigation and fertilization managements. PLoS One 16:e0254227

doi: 10.1371/journal.pone.0254227

[71]

Parvathi E, Venkaiah K, Munaswamy V, Naidu MVS, Giridhara KT, et al. 2013. Long-term effect of manure and fertilizers on the physical and chemical properties of an Alfisol under semiarid rainfed conditions. International Journal of Agricultural Science 3:500−5

[72]

Walker DJ, Clemente R, Bernal MP. 2004. Contrasting effects of manure and compost on soil pH, heavy metal availability and growth of Chenopodium album L. in a soil contaminated by pyritic mine waste. Chemosphere 57:215−224

doi: 10.1016/j.chemosphere.2004.05.020

[73]

Obia A, Cornelissen G, Mulder J, Dörsch P. 2015. Effect of soil pH increase by biochar on NO, N₂O and N₂ production during denitrification in acid soils. PLoS One 10:e0138781

doi: 10.1371/journal.pone.0138781