Dr Paramsothy (Jeya) Jeyakumar staff profile picture

Contact details +64 (06) 356 9099  ext. 84882

Dr Paramsothy (Jeya) Jeyakumar PhD, MPhil

Research Officer

School of Agriculture and Environment

I describe myself as a soil scientist, with specific expertise in the subject area of environmental chemistry. My research objectives align with enhancing the primary sector production and productivity while maintaining soil and water quality, and food safety. My current research projects study heavy metals and essential micronutrients in agricultural products and their effects on the food chain. I developed a great deal of expertise in using metal speciation to assess the bioavailability of trace elements (TE) in soil, and their effects on plants and soil microbial activity.

Professional

Contact details

  • Ph: 84882
    Location: 1.25, Ag Hort B
    Campus: Turitea

Qualifications

  • Doctor of Philosophy - Massey University (2011)
  • Mastor of Phylosophy - University of Peradeniya (2001)

Prizes and Awards

  • AGMARDT Post–Doctoral Scientist: Soil water repellency (SWR) – economic and environmental consequences of an emerging issue of soil degradation’. Plant and Food Research, New Zealand - (2010)
  • ‘Summit-Quinphos’ award for the best final year PhD candidate - New Zealand Society of Soil Science (2009)

Research Expertise

Research Interests

  • Environmental issues of heavy metals bioavailability in soil, water and wastewater system
  • Carbon, phosphorus and nitrogen dynamics in soil and plant
  • Environmental issues in relation to natural disasters
  • Soil–root interface with special concern on Mycorrhiza and soil microorganisms

Thematics

Health and Well-being, Future Food Systems

Area of Expertise

Field of research codes
Environmental Sciences (050000): Soil Sciences (050300)

Keywords

Heavy metals

Research Projects

Summary of Research Projects

Position Current Completed
Project Leader 1 0

Research Outputs

Journal

Mao, Q., Zhou, Y., Yang, Y., Zhang, J., Liang, L., Wang, H., . . . Rizwan, M. (2019). Experimental and theoretical aspects of biochar-supported nanoscale zero-valent iron activating H<inf>2</inf>O<inf>2</inf> for ciprofloxacin removal from aqueous solution. Journal of Hazardous Materials. 380
[Journal article]Authored by: Jeyakumar, P.
Xia, S., Song, Z., Jeyakumar, P., Shaheen, SM., Rinklebe, J., Ok, YS., . . . Wang, H. (2019). A critical review on bioremediation technologies for Cr(VI)-contaminated soils and wastewater. Critical Reviews in Environmental Science and Technology. 49(12), 1027-1078
[Journal article]Authored by: Jeyakumar, P.
Hermansen, C., Moldrup, P., Müller, K., Jensen, PW., van den Dijssel, C., Jeyakumar, P., . . . de Jonge, LW. (2019). Organic carbon content controls the severity of water repellency and the critical moisture level across New Zealand pasture soils. Geoderma. 338, 281-290
[Journal article]Authored by: Jeyakumar, P.
Geretharan, T., Jeyakumar, P., Bretherton, M., & Anderson, CWN. (2018). Defining a standard method to measure the total and bioavailable concentration of fluorine in New Zealand soils. Microchemical Journal. 142, 94-101
[Journal article]Authored by: Anderson, C., Bretherton, M., Jeyakumar, P.
Wang, M., Tang, Y., Anderson, CWN., Jeyakumar, P., & Yang, JY. (2018). Correction to: Effect of simulated acid rain on fluorine mobility and the bacterial community of phosphogypsum (Environmental Science and Pollution Research, (2018), 25, 16, (15336-15348), 10.1007/s11356-018-1408-5). Environmental Science and Pollution Research. 25(23), 23371-23372
[Journal article]Authored by: Anderson, C., Jeyakumar, P.
Wang, M., Tang, Y., Anderson, CWN., Jeyakumar, P., & Yang, J. (2018). Effect of simulated acid rain on fluorine mobility and the bacterial community of phosphogypsum. Environmental Science and Pollution Research. 25(16), 15336-15348
[Journal article]Authored by: Anderson, C., Jeyakumar, P.
Stafford, AD., Kusumo, BH., Jeyakumar, P., Hedley, MJ., & Anderson, CWN. (2018). Cadmium in soils under pasture predicted by soil spectral reflectance on two dairy farms in New Zealand. Geoderma Regional. 13, 26-34
[Journal article]Authored by: Anderson, C., Jeyakumar, P.
Stafford, A., Jeyakumar, P., Hedley, M., & Anderson, C. (2018). Influence of Soil Moisture Status on Soil Cadmium Phytoavailability and Accumulation in Plantain (Plantar lanceolata). Soil Systems. 2(1), Retrieved from http://www.mdpi.com/
[Journal article]Authored by: Anderson, C., Jeyakumar, P.
Bretherton, M., Horne, D., Sumanasena, HA., Jeyakumar, P., & Scotter, D. (2018). Repellency-induced runoff from New Zealand hill country under pasture: A plot study. Agricultural Water Management. 201, 83-90
[Journal article]Authored by: Bretherton, M., Horne, D., Jeyakumar, P.
Stafford, AD., Palmer, AS., Jeyakumar, P., Hedley, MJ., & Anderson, CWN. (2018). Soil cadmium and New Zealand dairy farms: Impact of whole-farm contaminant variability on environmental management. Agriculture, Ecosystems and Environment. 254, 282-291
[Journal article]Authored by: Anderson, C., Jeyakumar, P., Palmer, A.
Black, M., Miller, S., Dean, F., Carder, D., Jeyakumar, P., & Anderson, CWN. (2014). Getting to grips with copper chemistry. New Zealand Kiwifruit Journal. November/December 2014(228), 23-25
[Journal article]Authored by: Anderson, C., Jeyakumar, P.
Müller, K., Deurer, M., Jeyakumar, P., Mason, K., van den Dijssel, C., Green, S., . . . Clothier, B. (2014). Temporal dynamics of soil water repellency and its impact on pasture productivity. Agricultural Water Management. 143, 82-92
[Journal article]Authored by: Jeyakumar, P.
Jeyakumar, P., Müller, K., Deurer, M., Van den Dijssel, C., Mason, K., Le Mire, G., . . . Clothier, B. (2014). A novel approach to quantify the impact of soil water repellency on run-off and solute loss. Geoderma. 221-222, 121-130
[Journal article]Authored by: Jeyakumar, P.
Jeyakumar, P., Loganathan, P., Anderson, CWN., Sivakumaran, S., & McLaren, RG. (2014). Comparative tolerance of Pinus radiata and microbial activity to copper and zinc in a soil treated with metal-amended biosolids. Environmental Science and Pollution Research. 21(5), 3254-3263
[Journal article]Authored by: Anderson, C., Jeyakumar, P.
Villholth, KG., Jeyakumar, P., Amerasinghe, PH., Manamperi, ASP., Vithanage, M., Goswami, RR., . . . Panabokke, CR. (2010). Tsunami impacts and rehabilitation of groundwater supply: Lessons learned from eastern Sri Lanka. , 82-99
[Journal article]Authored by: Jeyakumar, P.
Jeyakumar, P., Loganathan, P., Sivakumaran, S., Anderson, CWN., & McLaren, RG. (2010). Bioavailability of copper and zinc to poplar and microorganisms in a biosolids-amended soil. Australian Journal of Soil Research. 48(5), 459-469
[Journal article]Authored by: Anderson, C., Jeyakumar, P.
Jeyakumar, P., Loganathan, P., Sivakumaran, S., Anderson, CWN., & McLaren, RG. (2008). Copper and zinc spiking of biosolids: Effect of incubation period on metal fractionation and speciation and microbial activity. Environmental Chemistry. 5(5), 347-354
[Journal article]Authored by: Anderson, C., Jeyakumar, P.
Jeyakumar, P., Pathmarajah, S., & Ariyaratne, AR. (2001). User–friendly computer package for on–farm water management in the dry zone of Sri Lanka. Journal of Tropical Agricultural Research. 13, 112-122
[Journal article]Authored by: Jeyakumar, P.

Book

Villholth, KG., Jeyakumar, P., Amerasinghe, PH., Manamperi, ASP., Vithanage, M., Goswami RR, RR., . . . Panabokke, CR. (2010). Tsunami impacts and rehabilitation of groundwater supply: Lessons learned from Eastern Sri Lanka. In MK. Jha (Ed.) Natural and Anthropogenic Disasters: Vulnerability, Preparedness and Mitigation. (pp. 82 - 99). New York: Springer
[Chapter]Authored by: Jeyakumar, P.
Villholth, KG., Amerasinghe, P., & Jeyakumar, P. (2008). Tsunami impacts on shallow groundwater and associated water supplies on the East Coast of Sri Lanka. In Groundwater for Sustainable Development: Problems, Perspectives and Challenges. (pp. 211 - 222).
[Chapter]Authored by: Jeyakumar, P.

Report

Villholth, KG., Amerasinghe, PH., Jeyakumar, P., Panabokke, CR., Woolley, O., Weerasinghe, MD., . . . Pathirana, SRK.(2005). Tsunami impacts on shallow groundwater and associated water supply on the east coast of Sri Lanka. Colombo, Sri Lanka: International Water Management Institute (IWMI)
[Technical Report]Authored by: Jeyakumar, P.

Conference

Gnaratnam, A., McCurdy, M., Grafton, M., Jeyakumar, P., Bishop, P., & Davies, C.(2019). ASSESSMENT OF NITROGEN FERTILIZERS UNDER CONTROLLED ENVIRONMENT – A LYSIMETER DESIGN. Paper presented at the meeting of Occasional Report No. 32. Fertilizer and Lime Research Centre. Massey University, Palmerston North
[Conference Paper]Authored by: Grafton, M., Jeyakumar, P.Contributed to by: Grafton, M.Edited by: Currie, L.
Jeyakumar, P., Stafford, AD., Anderson, C., Cavanagh, JE., & Smith, S. (2017, July). Cadmium risks to soil, crop and livestock productivity in New Zealand agricultural system and strategies for mitigation. Presented at The International Conference on the Biogeochemistry of Trace Elements (ICOBTE 2017). Zurich, Switzerland.
[Conference Oral Presentation]Authored by: Anderson, C., Jeyakumar, P.
Hedley, MJ., Stafford, A., Anderson, CWA., Jeyakumar, P., Kusumo, B., Mitchell, C., . . . Calvelo-Pereira, R. (2017). Mitigating elevated topsoil cadmium with topsoil inversion tillage. In LD. Currie, & MJ. Hedley (Eds.) Science and Policy: Nutrient Management Challenges for the Next Generation. (pp. 88 - 88). : 30th Annual Fertilizer Lime Research Centre Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Jeyakumar, P.Edited by: Currie, L.
Cavanagh, JE., Yi, M., Lehto, N., Robinson, B., Geretharan, T., Jeyakumar, P., . . . Anderson, CWA. (2017). Understanding the influence of soil properties on plant uptake of cadmium in New Zealand agricultural soils. In . L. D. Currie and M. J. Hedley (Ed.) Science and Policy: Nutrient Management Challenges for the Next Generation. (pp. 1 - 11). : 30th Annual Fertilizer & Lime Research Centre Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Jeyakumar, P.
Thompson-Morrison, H., Anderson, CWN., Jeyakumar, P., Geretharan, T., Cavanagh, J., & Robinson, B. (2017). Cost-benefit analysis of cadmium management in New Zealand’s horticultural soils. In LD. Currie, & MJ. Hedley (Eds.) Science and Policy: Nutrient Management Challenges for the Next Generation. (pp. 1 - 4). : 30th Annual Fertilizer Lime Research Centre Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Jeyakumar, P.Edited by: Currie, L.
Geretharan, T., Jeyakumar, P., Anderson, CWA., & Bretherton, M. (2017). Effects of soil properties on bioavailability of fluorine to microorganisms. In LD. Currie, & MJ. Hedley (Eds.) Science and Policy: Nutrient Management Challenges for the Next Generation. (pp. 89 - 89). Palmerston North, New Zealand: 30th Annual Fertilizer Lime Research Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Bretherton, M., Jeyakumar, P.Edited by: Currie, L.
Stafford, A., Jeyakumar, P., Anderson, CWA., & Hedley, MJ. (2017). Influence of fluctuating soil moisture on cadmium phytoavailability and accumulation in plantain. In . L. D. Currie and M. J. Hedley (Ed.) Science and Policy: Nutrient Management Challenges for the Next Generation. (pp. 81 - 81). : 30th Annual FLRC Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Jeyakumar, P.
Alborno Jover, PMY., Anderson, CWA., & Jeyakumar, P. (2016). Environmental management perspectives of soil fluorine in New Zealand’s agricultural soils. , Joint Soils Conference of the New Zealand and Australian Societies of Soil Science
[Conference Abstract]Authored by: Anderson, C., Jeyakumar, P.
Thompson-Morrison, H., Anderson, CWA., Jeyakumar, P., Cavanagh, J., & Robinson, B. (2016). An economic perspective on soil amendment use for regulating cadmium bioavailability in horticultural soil. , Joint Soils Conference of the New Zealand and Australian Societies of Soil Science
[Conference Abstract]Authored by: Anderson, C., Jeyakumar, P.
Geretharan, T., Jeyakumar, P., Anderson, CWN., & Bretherton, M. (2016). Effect of lime and compost on fluorine bioavailability and microorganisms in New Zealand horticultural soils. , Joint Soils conference of the New Zealand and Australian Societies of Soil Science
[Conference Abstract]Authored by: Anderson, C., Bretherton, M., Jeyakumar, P.
Okafor, CM., Jeyakumar, P., & Anderson, CWA. (2016). Does land application of drilling waste pose a threat to New Zealand agricultural systems?. Integrated Nutrient and Water Management for Sustainable Farming. (pp. 1 - 7). : 29th Annual FLRC Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Jeyakumar, P.
Jeyakumar, P., & Anderson, CWN. (2016). Recent methodology developments in soil fluorine analysis. In LD. Currie, & R. Singh (Eds.) Integrated Nutrient and Water Management for Sustainable Farming. (pp. 53 - 53). Palmerston North, New Zealand: 29th Annual Fertilizer Lime Research Centre Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Jeyakumar, P.Edited by: Currie, L.
Cavanagh, J., Munir, K., Gray, C., Wakelin, S., Chioma, O., Jeyakumar, P., . . . Robinson, B. (2016). Assessing the significance of cadmium in New Zealand agricultural systems – Preliminary results. In . L. D. Currie and R. Singh (Ed.) Integrated Nutrient and Water Management for Sustainable Farming. (pp. 51 - 51). : 29th Annual FLRC Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Jeyakumar, P.
Hageman, LF., Jeyakumar, P., Smith, S., & Anderson, CWA. (2015). Serum and faecal zinc concentrations in sheep following low dose oral ZnO treatment. In LD. Currie, & LL. Burkitt (Eds.) Moving Farm Systems to Improved Attenuation. (pp. 81 - 81). : 28th Annual Fertilizer Lime Research Centre Workshop
[Conference Paper in Published Proceedings]Authored by: Anderson, C., Jeyakumar, P.Edited by: Burkitt, L., Currie, L.
Jeyakumar, P., Anderson, CWN., & Cronin, SJ. (2014). Comparison of trace elements in potatoes grown in volcanic soil versus non-volcanic soil. , New Zealand Society of Soil Science - Soil Science for future generations 2014 Conference
[Conference Abstract]Authored by: Anderson, C., Jeyakumar, P.
Jeyakumar, P., Anderson, CWN., Miller, S., & Holmes, A. (2014). Optimising copper sprays on kiwifruit: A review. In LD. Lance, & CL. Christensen (Eds.) FLRC Workshop Proceedings. Palmerston North: 27th Annual FLRC Workshop
[Conference Paper in Published Proceedings]Authored by: Jeyakumar, P.
Clothier, BE., Müller, K., Deurer, M., Green, S., Jeyakumar, P., van den Dijssel, C., . . . Herath, I. (2013, November). The natural capital value of soil: Carbon, macropores and hydrophobicity. Presented at American Society of Agronomy/ Crop Science Society of America / Soil Science Society of America International Annual Meetings. Tampa, United States of America.
[Conference Oral Presentation]Authored by: Jeyakumar, P.
Jeyakumar, P., Müller, K., Deurer, M., van den Dijssel, C., Mason, K., Green, S., . . . Clothier, BE. (2012, April). Influence of soil water repellency on runoff and solute loss from New Zealand pasture. Presented at European Geosciences Union General Assembly 2012. Vienna, Austria.
[Conference Oral Presentation]Authored by: Jeyakumar, P.
Jeyakumar, P., Loganathan, P., Anderson, CWN., Sivakumaran, S., & McLaren, RG. (2010). Response of Pinus radiata and soil microbial activity to increasing copper and zinc contamination in a soil treated with metal–amended biosolids. In RJ. Gilkes, & N. Prakongkep (Eds.)Brisbane, Australia: 19th World Congress of Soil Science: Soil Solutions for a Changing World
[Conference Paper in Published Proceedings]Authored by: Jeyakumar, P.
Jeyakumar, P., Loganathan, P., Sivakumaran, S., Anderson, CWN., & McLaren, RG. (2009, July). Comparative tolerance of poplar and microorganisms to copper and zinc toxicity in a biosolids–amended soil. Presented at 10th International Conference on the Biogeochemistry of Trace Elements. Chihuahua, Mexico.
[Conference Oral Presentation]Authored by: Jeyakumar, P.

Other

Villholth, KG., Jeyakumar, P., Amerasinghe, PH., Manamperi, ASP., Vithanage, M., Goswami, RR., . . . Panabokke, CR. (2010). Tsunami impacts and rehabilitation of groundwater supply: Lessons learned from Eastern Sri Lanka. (pp. 296 - 308). In Paris: UNESCO: International Hydrological Program Publication
[Working Paper]Authored by: Jeyakumar, P.

Supervision and Teaching

Summary of Doctoral Supervision

Position Current Completed
Supervisor 2 0
Co-supervisor 5 1

Current Doctoral Supervision

Supervisor of:

  • Dumsane Matse - Doctor of Philosophy
    Application of heavy molecular weight organic acids (HMWOA) in ameliorating the toxic effect of heavy metals in Newe Zealand productive soils
  • Nilusha Ubeynarayana - Doctor of Philosophy
    Mechanisms of cadmium uptake and transport in forage and food plant species

Co-supervisor of:

  • Bawatharani Raveendrakumaran - Doctor of Philosophy
    Controlled traffic in association with nitrate leaching and nitrous oxide emissions from slow release fertilizer for best fertilizer management practices in New Zealand soils
  • Gautam Shrestha - Doctor of Philosophy
    Amplifying the power of proximal sensing to monitor trace element distribution in agricultural soils
  • Cecilia Rodriguez Gomez - Doctor of Philosophy
    Geothermal exploration using hyperspectral and thermal remote sensing
  • Abhiram Gunaratnam - Doctor of Philosophy
    The testing of novel slow release fertilisers manufactured by CRL Energy.
  • Geretharan Thangavelautham - Doctor of Philosophy
    Impact of soil fluorine from superphosphate on microbiology

Completed Doctoral Supervision

Co-supervisor of:

  • 2017 - Aaron Stafford - Doctor of Philosophy
    Distribution of cadmium in long-term dairy soils, its accumulation in selected plant species, and the implications for management and mitigation

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