Staff Directory /

Dr. Tom Bruulsema

Curriculum Vitae: download
Color Photo: download

18 Maplewood Dr
Guelph, ON N1G 1L8
Since July 2017, Tom Bruulsema has been VP Americas & Research for the International Plant Nutrition Institute. Based in Guelph, Ontario, Canada, he has been involved in soil fertility research and education since 1995. From 2015 to 2017 he led the Institute's Phosphorus Program. Dr. Bruulsema has been recognized as a Fellow of the American Society of Agronomy, the Soil Science Society of America, and the Canadian Society of Agronomy. He was previously a research associate at the University of Minnesota (1994), and an agronomist with the Mennonite Central Committee in Bangladesh (1986-1990).


B.S. 1983 University of Guelph (Agriculture)
M.S. 1985 University of Guelph (Crop Science)
Ph.D. 1994 Cornell University (Soil Science)

Awards & Recognition

Agronomic Industry Award (2014) American Society of Agronomy

Fellow (2012) Canadian Society of Agronomy

Fellow (2008) Soil Science Society of America
Fellow (2007) American Society of Agronomy

Professional Service

2005-2011 President-elect, President, past-President, Canadian Society of Agronomy
2007-2010 Director, American Society of Agronomy Board (ICCA Representative)
2005-2007 Chair, Division S-8, Soil Science Society of America
2001-2004 Chair, International Certified Crop Adviser Board
2000-2006 Chair, Agronomy-Environment Committee, Canadian Fertilizer Institute
1999-2003 President, NE Branch, American Society of Agronomy & Soil Science Society of America
1999-2000 Chair, Ontario Certified Crop Adviser Board
1995-2005 Chair, Agronomy Committee, Ontario Agri Business Association
1995-1998 Chair, Ontario Certified Crop Adviser Exam Committee

Selected Publications

Macintosh, KA, DG Doody, PJA Withers, R McDowell, DR Smith, LT Johnson, TW Bruulsema, V O'Flaherty and JW McGrath. 2019. Transforming soil phosphorus fertility management strategies to support the delivery of multiple ecosystem services from agricultural systems. Science of The Total Environment 649:90-98. ISSN 0048-9697

Bruulsema, T. 2018. Managing nutrients to mitigate soil pollution. Environmental Pollution, ISSN 0269-7491,

Maaz, T. M., Waldo, S., Bruulsema, T., & Mikkelsen, R. (2018). Inconsistencies undermine the conclusion that agriculture is a dominant source of NOx in California. Science Advances, 4(9). Retrieved from

George, TS, CD Giles, D Menezes-Blackburn, …, TW Bruulsema, et al. (102 authors). 2017. Organic phosphorus in the terrestrial environment: a perspective on the state of the art and future priorities. Plant Soil.

Jarvie, Helen P, LT Johnson, AN Sharpley, DR Smith, DB Baker, TW Bruulsema, R Confesor. 2016. Increased soluble phosphorus loads to Lake Erie: unintended consequences of conservation practices? Journal of Environmental Quality doi:10.2134/jeq2016.07.0248

Powers SM, Bruulsema TW, Burt TP, Chan N, Elser JJ, Haygarth PM, Howden NJK, Jarvie HP, Lyu Y, Peterson HM, Sharpley AN, Shen J, Worrall J, Zhang F. 2016. Long-term accumulation and transport of anthropogenic phosphorus in three river basins. Nature Geoscience. DOI: 10.1038/ngeo2693.

Norton R, Bruulsema T, Roberts T, Snyder C. 2015 Crop nutrient performance indicators. Agriculturalm Science, 27 (2), 33-38.

Roy, AK, Wagner-Riddle, C, Deen, B, Lauzon, J and Bruulsema, T. 2014. Nitrogen application rate, timing and history effects on nitrous oxide emissions from corn (Zea mays L.). Can J Soil Sci. 94: 563-573

Fixen, PE and TW Bruulsema . 2014. Potato management challenges created by phosphorus chemistry
and plant roots. American Journal of Potato Research 91 (2), 121-131. DOI 10.1007/s12230-014-9374-z.

Robertson, GP, TW Bruulsema, RJ Gehl, D Kanter, DL Mauzerall, CA Rotz, CO Williams. 2012. Nitrogen–climate interactions in US agriculture. Biogeochemistry DOI 10.1007/s10533-012-9802-4.