Selected key publications 

Kulasinghe T.N., and Dharmakeerthi R.S. 2022. Effects of land use type and tank components on soil properties and sustainability of tank cascade system in the Dry Zone of north central Sri Lanka. Agricultural Systems 201 (2022) 103474. https://doi.org/10.1016/j.agsy.2022.103474

Attanayake, C. P., Dharmakeerthi, R. S., Kumaragamage, D., Indraratne, S.P., & Goltz, D. (2022). Flooding-induced inorganic phosphorus transformations in two soils, with and without gypsum amendment. J. Environ. Qual, 1–11. https://doi.org/10.1002/jeq2.20319

Nawarathna, K. K., Dandeniya, W. S., Dharmakeerthi, R. S., & Weerasinghe, P. (2021). Evaluating the nitrification inhibition potential of selected botanicals and their non-target effects. Canadian Journal of Soil Science, (ja). https://doi.org/10.1139/CJSS-2021-0072

Liyanage, L. R. M. C., Sulaiman, M. F., Ismail, R., Gunaratne, G. P., Dharmakeerthi, R. S., Rupasinghe, M. G. N., Mayakaduwa, A.P. & Hanafi, M. M. (2021). Carbon Mineralization Dynamics of Organic Materials and Their Usage in the Restoration of Degraded Tropical Tea-Growing Soil. Agronomy, 11(6), 1191.

Concepcion, A., Kumaragamage, D., Akinremi, W., Dharmakeerthi, S., Goltz, D., & Indraratne, S. (2021). Phosphorus release from intact soil monoliths of manure amended fields under simulated snowmelt flooding. Journal of Environmental Quality. 50(1): 252-263.

Indraratne, S. P., Kumaragamage, D., Goltz, D., Dharmakeerthi, R. S., & Zvomuya, F. (2020). A laboratory assay of in situ stabilization of toxic metals in contaminated boreal forest soil using organic and inorganic amendments. Canadian Journal of Soil Science, 100(2), 109-119. dx.doi.org/10.1139/cjss-2019-0085

Dharmakeerthi R.S., Kumaragamage, D., Indraratne, S.P., and Goltz, D. (2019b). Phosphorus release from unamended, gypsum amended and biochar amended soils under simulated spring snowmelt and summer flooding conditions, Journal of Environmental Quality. 48:822-830

Dharmakeerthi R.S., Kumaragamage, D., Indraratne, S.P., and Goltz, D. (2019a). Gypsum amendment reduces redox-induced phosphorous release from freshly manured, flooded soils to floodwater, Journal of Environmental Quality. 48:127-135

Duminda V.G., Mapa, R., Dharmakeerthi R., Biswas, A. (2016) Effect of rice husk biochar on selected soil properties in tropical Alfisols. Soil Research 54: 302-310

Dharmakeerthi, R. S., Hanley, K., Whitman, T., Woolf, D., & Lehmann, J. (2015). Organic carbon dynamics in soils with pyrogenic organic matter that received plant residue additions over seven years. Soil Biology and Biochemistry, 88: 268-274.

Research Grants

Long term effect of single application of Rice Husk and Corn Cob Biochar on physical, hydrothermal properties and carbon dynamics in maize cultivated Reddish Brown Earth soil. (Co-investigator) NARP, SL Rs.3.0 Million [2021 – to date]

An Assessment of Economic and Environmental Feasibility of Alternative Agricultural Technologies to Restore Degraded Village Tank Cascade Systems of Dry Zone of Sri Lanka (Co-Investigator) 2019 World Bank: AHEAD/DOR/52 SL Rs. 30 Million [2019 – to date]

A Scalable Bio-based Solution to Eliminate Cyanotoxins in Drinking Water” (Collaborating Scientist). 2019. The Biotechnology and Biological Sciences Research Council (“BBSRC”) in the UK.SL Rs.44.0 Million for activities in Univ. of Peradeniya [2019- to date]

Research Facilitation Fund, PGIA 2018: Investigations on soil quality in intensively cultivated vegetable cropping systems of Sri Lanka (Principal Investigator). PGIA/RFF/01 Rs.0.75 Million (Ongoing)

National Research Council 2016: Development of eco-friendly farming technologies to minimize inorganic fertilizer usage while maintaining adequate productivity and improving soil fertility. (Principal Investigator) 2016. NRC TO 16-07 SL Rs.49.92 Million (ongoing).