Darshani Kumaragamage, Ph.D

Recent Publications

Peer reviewed journal articles (past 6 years)

  1. Lasisi AA, Akinremi OO, Zhang Q, Kumaragamage D. (In Press). Efficiency of fall versus spring applied urea‐based fertilizers treated with urease and nitrification inhibitors I. ammonia volatilization and mitigation by NBPT. Soil Science Society of America Journal. DOI: 10.1002/saj2.20062
  2. Lasisi A. A, O.O. Akinremi, and D. Kumaragamage. (In press). Ammonia emission from manures treated with different rates of urease and nitrification inhibitors.Canadian Journal of Soil Science. DOI:10.1139/cjss-2019-0128
  3. Kumaragamage, D., A. Concepcion, C. Gregory, D. Goltz, S. Indraratne and G.Amarawansha. 2020. Temperature and freezing effects on phosphorus release from soils to overlying floodwater under flooded, anaerobic conditions. Journal of Environmental Quality. 49:700–711. Open access
  4. Indraratne S.P., D. Kumaragamage, D. Goltz, R.S. Dharmakeerthi, and F. Zvomuya. 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. (Editor’s choice for the issue)
  5. Lasisi, Ahmed, Darshani Kumaragamage & Olalekan Akinremi. 2020. Stability of stored N-(n-butyl) thiophosphoric triamide (NBPT) treated urea-based fertilizers, Communications in Soil Science and Plant Analysis. 51:911-918.
  6. Lasisi A. A, O.O. Akinremi, and D. Kumaragamage. 2019. Efficacy of a new N-(n-butyl) thiophosphoric triamide formulation in reducing ammonia volatilization from urea-based fertilizers. Canadian Journal of Soil Science 99:395-405
  7. Kumaragamage, D., G. S. Amarawansha, S. P. Indraratne, K. Jayarathne, D. N. Flaten, F. Zvomuya, and O. O. Akinremi. 2019. Degree of phosphorus saturation as a predictor of redox-induced phosphorus release from flooded soils to floodwater. Journal of Environmental Quality.48:1817-1825. Open Access
  8. Duminda, D.M.S., D. Kumaragamage, S.P. Indraratne and W. S. Dandeniya. 2019. Effect of variable rates of phosphorus on changes in phosphorus fractions in two soils with contrasting properties under maize (Zea mays) cultivation. Journal of Soil Science Society of Sri Lanka. 85: 53-63.
  9. Dharmakeerthi R.S., D. Kumaragamage, S.P.Indraratne, and D. Goltz (2019). Phosphorus Release from Unamended, Gypsum-Amended and Biochar-Amended Soils under Simulated Spring Snowmelt and Summer Flooding Conditions. Journal of environmental quality. 48(1):127-35. Open access
  10. Chathurika, J.A.S., D. Kumaragamage, S.P. Indraratne, and W.S. Dandeniya (2019). Improving soil carbon pool, soil fertility and yield of maize (Zea mays L.) in low-fertile tropical Alfisols by combining fertilizers with slow-decomposing organic amendments. The Journal of Agricultural Science (Cambridge University Press). 157:45-54
  11. Dharmakeerthi R.S., D. Kumaragamage, S.P.Indraratne, and D. Goltz (2019). Gypsum Amendment Reduces Redox-Induced Phosphorous Release from Freshly Manured, Flooded Soils to Floodwater. Journal of environmental quality. 2019: 48:127-35. Open access.
  12. Duminda, D.M.S., D. Kumaragamage and S.P. Indraratne. (2018) Response of maize (Zea mays L.) to phosphorus fertilizers in two alfisols with contrasting phosphorus availabilities and sorption capacities. Communications in Soil Science and Plant Analysis. 49:1218-1228.
  13. Vivekanandan, K., O. Akinremi, A.P. Moulin and D. Kumaragamage (2018). Importance of terrain attributes in relation to the spatial distribution of soil properties at the micro scale, a case study. Canadian Journal of Soil Science. 98:292-305
  14. Kumaragamage, D. and O.O. Akinremi (2018). Manure Phosphorus: Mobility in Soils and Management Strategies to Minimize Losses. (An Invited review paper). Current Pollution Reports. 4: 162-174.
  15. Indraratne, S.P. and D. Kumaragamage (2018). Flooding-Induced Mobilization of Potentially Toxic Trace Elements from Uncontaminated, Calcareous, Agricultural Soils. Canadian Journal of Soil Science. 98:103-113.
  16. Sanjeevani, U. K. P. S., S. P. Indraratne, R. Weerasooriya, U. W. A. Vitharana and D. Kumaragamage (2017). Identifying the Sources and Contamination Status of Potentially Toxic Trace Elements in Agricultural Soils. Communications in Soil Science and Plant Analysis Vol. 48:865-877.
  17. Duminda, D.M.S., D. Kumaragamage, S. P. Indraratne and D. Flaten. (2017). Fertilizer-induced phosphorus dynamics in alkaline-calcareous soils as influenced by soil properties. Canadian J. Soil Science. 97(2):159-170. 2017.
  18. Diochon, A. N. Basiliko, M. Krzic, T. T. Yates, E. Olson, J. Masse, B. Amiro, and D. Kumaragamage. (2016) Profiling Undergraduate Soil Science Education in Canada: Status and Projected Trends. Canadian J. Soil Science. 97(2):122-32
  19. Chathurika, J.A.S., D. Kumaragamage, F. Zvomuya, O.O. Akinremi, D. Flaten, S.P. Indraratne, and W.S. Dandeniya (2016). Woodchip biochar with or without synthetic fertilizers affects soil properties and available phosphorus in two alkaline, Chernozemic soils. Canadian J. Soil Science. 96:472-484.
  20. Kumaragamage D., O.O. Akinremi and G.J. Racz (2016). Comparison of nutrient and metal loadings with the application of swine manure slurries and their liquid separates to soils. J. Environ. Qual. 45: 1769-1775. Open Access
  21. Jayarathne, P.D.K.D., D. Kumaragamage, S.P. Indraratne, D. Flaten and D. Goltz. (2016). Phosphorus release to floodwater from calcareous surface soils and their corresponding subsurface soils under anaerobic conditions. J. Environ. Qual. 45:1375–1384.
  22. Amarawansha, E.A.G.S., D. Kumaragamage, D. Flaten, F. Zvomuya and M Tenuta (2016). Predicting phosphorus release from anaerobic, alkaline, flooded soils. J. Environ. Qual. 45:1452–1459. Open access
  23. Chathurika, J.A.S., S.P. Indraratne, W.S. Dandeniya, and D. Kumaragamage. 2015. Beneficial management practices on growth and yield parameters of maize (Zea maize) and soil fertility improvement. Tropical Agricultural Research. 27 (1): 59-74.
  24. Amarawansha, E.A.G.S., D. Kumaragamage, D. Flaten, F. Zvomuya and M Tenuta 2015. Phosphorus mobilization from manure-amended and unamended alkaline soils to overlying water during simulated flooding. J. Environ. Qual. 44:1242–1252. The cover page article of the journal’s 44 (4) issue (July/August). Open access.
  25. Olatuyi, S.O., D. Kumaragamage, O.O. Akinremi and L. Grieger. 2014. Heavy-Metal Fractions in Solid and Liquid Separates of Swine Slurry Separated using Different Technologies. J. Environ. Qual. 43:1779–1789.

Darshani Kumaragamage, Ph.D