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Department of Agronomy




Hettiarachchi, G.M., E. Donner, and E. Doelsch. 2017. Introduction to Special Section: Application of Synchrotron Radiation-Based Methods for Environmental Biogeochemistry J. Environ. Qual. 46:1–7 https://dl.sciencesocieties.org/publications/jeq/pdfs/46/6/1139

Attanayake, C.P., G.M. Hettiarachchi, Q. Ma, G.M. Pierzynski, M.D. Ransom. 2017. Lead speciation and in vitro bioaccessibility of compost-amended urban garden soils. J. Environ. Qual. 46:1215-1224 doi:10.2134/jeq2017.02.0065

Paredez, J. M, N. Mladenov, M. B. Galkaduwa, G.M. Hettiarachchi, G.J. Kluitenberg, S.L. Hutchinson. 2017. A soil column study to evaluate treatment of trace elements from saline industrial wastewater. Journal of Water Science and Technology (Accepted on 06/26/2017).

Vega,M. A., H. V. Kulkarni, N. Mladenov, K. Johannesson, G. M. Hettiarachchi, P. Bhattacharya, N. Kumar, J. Weeks, M. Galkaduwa and S. Datta. 2017. Biogeochemical Controls on the Release and Accumulation of Mn and As in Shallow Aquifers, West Bengal, India. Front. Environ. Sci., 23 June 2017. doi.org/10.3389/fenvs.2017.00029.

Galkaduwa, M.B., G.M. Hettiarachchi, G.J. Kluitenberg, S.L. Hutchinson, L. Erickson, L. Davis. 2017. Transport and transformation of selenium and other constituents of flue-gas desulfurization wastewater in water-saturated soil materials. J Environ Qual. 46(2):384-392. doi: 10.2134/jeq2016.09.0335.

Datta, S, S.E. Vero, G.M. Hettiarachchi, and K. Johannesson. 2017.  Tungsten contamination of soils and sediments: Current state of Science. Current Pollution Rep. Curr Pollution Rep  doi:10.1007/s40726-016-0046-0


Karna, R., G.M. Hettiarachchi, M. Newville, C-J Sun, and Q. Ma, Synchrotron-Based X-Ray Spectroscopy Studies for Redox-Based Remediation of Lead, Zinc, and Cadmium in Mine Waste Materials. Journal of Environ. Qual. Published online October 20, doi:10.2134/jeq2015.12.0616

Wijesekara, H., N. S. Bolan, M. Vithanage, Y. Xu, S. Mandal, S. L. Brown, G. M. Hettiarachchi, G. M. Pierzynski, L. Huang, Y. Ok, M. B. Kirkham, C. Saint, A. Surapaneni.  A review on the utilization of biowastes for mine spoil rehabilitation. Advances in Agronomy. 138: 97- 173.

Brown, S., R.L. Chaney, and G.M. Hettiarachchi. 2016. Lead in urban soils -- A real or perceived concern for urban agriculture? J. Environ. Qual45: 26-36. OPEN ACCESS


Naujokas, M.F., N.T. Basta, Z. Cheng, G.M. Hettiarachchi, M. Maddaloni, C. Schadt, K. G. Scheckel, C. Attanayake, and H. Henry. 2015. Bioavailability-based in situ remediation to meet future lead (Pb) standards in urban soils and gardens. Environ. Sci. Technol., Just Accepted Manuscript. DOI: 10.1021/acs.est.5b01693.  Publication Date (Web): 03 Jul 2015.

Attanayake, C.P., G.M. Hettiarachchi, S. Martin, and G.M. Pierzynski. 2015. Potential bioavailability of lead, arsenic, and polycyclic aromatic hydrocarbons in compost-amended urban soils. J. Environ. Qual. 44:930-944. doi:10.2134/jeq2014.09.0400.

Milani, N., G.M. Hettiarachchi, D.G. Beak, M. J. McLaughlin, J. K. Kirby, and S. P. Stacey 2015. Fate of zinc oxide nanoparticles coated onto macronutrient fertilizers in an alkaline calcareous soil. PLoS ONE 10(5): e0126275. DOI: 10.1371/journal.pone.0126275.



Hartley, P.E., D. Presley, M. D. Ransom, G. M. Hettiarachchi, and L. T. West.  2014. Overlying parent material affects degree of expression of vertic properties in polygenetic soils in the Cherokee Prairies Major Land Resource Area of Kansas. Soil Sci. Soc. Am. J. (KAES# 13-153-J) Accepted in Dec. 2013.

Hartley, P.E., D. Presley, M. D. Ransom, G. M. Hettiarachchi, and L. T. West.  2014. Vertisols and Vertic Properties of Soils of the Cherokee Prairies of Kansas. Soil Sci. Soc. Am. Vol. 78 No. 2, p. 556-566.

Defoe, P.P, G.M. Hettiarachchi, C. Benedict, and S. Martin. 2014. Safety of Gardening on Lead- and Arsenic-Contaminated Urban Brownfields.J. Environ. Qual. (KAES# 14-293-J) 43:2041- 2078. doi:10.2134/jeq2014.03.0099.

Khatiwada, R., G.M. Hettiarachchi, D. Mengel, and M. Fei.  Placement and source effects of phosphate fertilizers on phosphorus availability and reaction products in two reduced-till soils: A greenhouse study. Soil Sci. (KAES# 12-304-J) 179: 141-152.

Sankar, M. S., M.A. Vega, P. P. Defoe, M. G. Kibria, S. Ford, K. Telfeyan, A. Neal, T.J. Mohajerin, G. M. Hettiarachchi, S. Barua, C. Hobson, K. Johannesson, S. Datta. 2014. Elevated arsenic and manganese in groundwaters of Murshidabad, West Bengal, India Science of the Total Environ. Vol. 488-489: 570-579.

Harms, A., D.R. Presley, G.M. Hettiarachchi, C. Attanayake, S. Martin, and S.J. Thien. 2014. Harmony Park: A Decision Case on Gardening on a Brownfield Site. Natural Sciences Education (KAES# 13-129-J) Vol. 43, 33-41.

Attanayake, C.P., G.M. Hettiarachchi, A. Harms, D. Presley, S. Martin, and G.M. Pierzynski. 2014. Field Evaluations on Soil Plant Transfer of Lead from an Urban Garden Soil. J. Environ. Qual. (KAES# 13-364-J) Vol. 43, 475-487.

Baker, L., G.M. Pierzynski, G.M. Hettiarachchi, K.G. Scheckel, and M. Newville. 2014. μXRF, μXAS and μXRD Investigation of Pb Speciation after the Addition of Different P Amendments to a Smelter-Contaminated Soil. J. Environ. Qual.Vol. 43, 488-497.(KAES # 14-011-J).



Mladenov, N., P. Wolski, G. M Hettiarachchi, M. Murray-Hudson; H. Enriquez; S. Damaraju, M.B. Galkaduwa, D. M McKnight, and W. Masamba. 2013. Abiotic and biotic factors influencing the mobility of arsenic in island groundwater of the Okavango Delta, Botswana. J. of Hydrology. Vol. 518, Part C, 326-341. http://dx.doi.org/10.1016/j.jhydrol.2013.09.026

Harms, A., D. Presley, G.M. Hettiarachchi, and S.J. Thien. 2013. Assessing the Needs Urban Gardeners and Farmers: Soil Contamination. Journal of Extension.  51 (1)



Khatiwada, R., G.M. Hettiarachchi, D. Mengel, and M. Fei. 2012. Speciation of Phosphorus in a Fertilized Reduced Till Soil System: In-Field Treatment Incubation Study. Soil Sci. Soc. Am. J.  76: 2006-2018.

Baker, L., G.M. Pierzynski, G.M. Hettiarachchi, K.G. Scheckel, and M. Newville.  2012. Speciation of Zn as Influenced by P Addition in a Pb/Zn Smelter Contaminated Soil. J. Environ. Qual.  41: 1865-1873.

Jassogne, L., G.M. Hettiarachchi, A. McNeill, and D. Chittleborough. 2012. Characterising the chemistry of micropores in a sodic soil with strong texture-contrast using synchrotron X-ray techniques and LA-ICP-MS. Soil Res. 50: 424–435.

Premarathna, L., M.J. McLaughlin, J. Kirby, G.M. Hettiarachchi, S. Stacey, and D. Chittleborough. 2012. Selenate-enriched urea granules are a highly effective fertilizer for selenium biofortification of paddy rice grain. J. Agric. Food Chem. 60: 6037–6044.

Premarathna, L., M.J. McLaughlin, J. Kirby, G.M. Hettiarachchi, D. Beak, S. Stacey, and D. Chittleborough. 2012. Influence of submergence and subsequent drainage on the partitioning and lability of added selenium fertilizers in a Fluvisol. European J Soil Sci. 63:514-522.

Milani, N., M.J. McLaughlin, S.P. Stacey, J. K. Kirby, G.M. Hettiarachchi, D.G. Beak and G. Cornelis. 2012. Dissolution kinetics of macronutrient fertilisers coated with manufactured zinc oxide nanoparticles. J. Agric. Food Chem. 60:3991-98.

Brown, S.L., I. Clausen, M.A. Chappell, K.G. Scheckel, M. Newville, G.M. Hettiarachchi. 2012. High Fe biosolids compost induced changes in Pb and As speciation and bioaccessibility in contaminated soils. J. Environ. Qual. 41: 1612-22 



De Livera, D. Beak, M.J. McLaughlin, G.M. Hettiarachchi, and J.K. Kirby.  2011. Release of dissolved cadmium and sulfur nanoparticles from oxidizing sulfide minerals. Soil Sci. Soc. Am. J. 75: 842- 854.

Lombi, E., G.M. Hettiarachchi, and K.G. Scheckel. 2011.  Advanced in situ spectroscopic techniques and their applications in environmental biogeochemistry: Introduction to the special section.  J. Environ. Qual. 40:659-666.

Beak, D., J.K. Kirby, G.M. Hettiarachchi, L.A. Wendling, M.J. McLaughlin, and R. Khatiwada. 2011. Cobalt distribution and speciation in spiked soils: Effect of aging, intermittent submergence and in situ rice roots.  J. Environ. Qual. 40:679-695.

De Livera M.J. McLaughlin, G.M. Hettiarachchi, J.K. Kirby, and D.G. Beak.  2011. Cadmium solubility in paddy soils: effects of soil oxidation, sulfide equilibria and competitive ions. Sci. Total Environment. 409:1489-1497.

Premarathna, H.M.P.L., G.M. Hettiarachchi, and S.P. Indrarathne. 2011. Trace metal concentration in crops and soils collected from intensively cultivated areas of Sri-Lanka. Pedology. 54: 230-240



Premarathna, L., M.J. McLaughlin, J. Kirby, G.M. Hettiarachchi, D. Beak, S. Stacey, and D. Chittleborough. 2010. Potential availability of fertilized selenium in field capacity and submerged soils. Soil Sci. Soc. Am. J. 74(5) 1589-1596

Biasioli, M., J. Kirby, G.M. Hettiarachchi, F. Ajmone-Marsan, and M.J. McLaughlin. 2010. Copper lability in soils subjected to intermittent submergence.  J. Environ. Qual. 39:2047-2053.

Hettiarachchi, G. M., E. Lombi, M. J. McLaughlin, D. Chittleborough, and C. Johnston.  2010.  Chemical Behavior of Fluid- and Granular-Mn and Zn Fertilizers in Alkaline Soils. Aust. J. Soil Res. 48: 238-247.

Stacey, S.P., M.J. McLaughlin, and G. M. Hettiarachchi. 2010.  Fertilizer-Borne Trace Element Contaminants in Soils.  In Trace Elements in soils. Hooda P.S. (ed.) p. 135-154. Blackwell Publishing Ltd.  Oxford, England.



Jassogne, L., G. M. Hettiarachchi, D. Chittleborough, and A. McNeill. 2009. Distribution and speciation of nutrient elements around micropores. Soil Sci. Soc. Am. J. 73:1319 -1326.

Stacey, S.P., M.J. McLaughlin, I. Cakmak, G. Hettiarachchi, K. Scheckel, and M. Karkkainen. 2008. Root uptake of lipophilic zinc-rhamnolipid complexes. J. Agric. Food Chem. 56:2112-2117.



Hettiarachchi, G. M., M. J. McLaughlin, K. G. Scheckel, D. J. Chittleborough, M. Newville, S. Sutton, and E. Lombi. 2008. Evidence for Different Reaction Pathways for Liquid- and Granular-Micronutrients in a Calcareous Soil. Soil Sci. Soc. Am. J. 72:98-110.