Professor, Plant Science
phone: 6048226139
fax: 6048222184
MacMillan 325
2357 Main Mall
Vancouver, BC V6T 1Z4


University of Michigan, Ph.D, Biological Sciences
Princeton University, MA, Cellular and Developmental Biology
Indian Agricultural Research Institute, MSc, Plant Physiology
College of Agriculture (India), BSc, Hon. Agricultural Sciences


  • Effects of ultraviolet-B radiation on plants
  • Role of mycorrhizae in plant-plant interaction
  • Allelopathy
  • Stress physiology
  • Seed dormancy and seed banks


  • APBI 328 – Weed Science
  • BIOL 317 –  Weed Science

Selected Publications

Cameron, J.H. M.B. Isman, and M.K. Upadhyaya. 2007. Trichoplusia ni growth and preference on broccoli and eight common agricultural weeds. Can. J. Plant Sci. 87:413-421.

Bainard, Luke D., Murray B. Isman, and Mahesh K. Upadhyaya. 2006. Phytotoxicity of clove oil and its primary constituent eugenol and the role of leaf epicuticular wax in the susceptibility to these essential oils. Weed Science 54:833-837.

Furness, N.H., P.A. Jolliffe, and M.K. Upadhyaya. 2005. Experimental approaches to studying effects of UV-B radiation on plant competitive interactions. Phytochem. and Photobiol. 81:1026-1037.

Rashid, A., N.H. Furness, B.E. Ellis and M.K. Upadhyaya. 2005. Inhibition of seed germination and seedling growth by hound’s-tongue (Cynoglossum officinale L.) seed leachate. Weed Biol. & Manage. 5: 143-149.

Furness, N.H., P.A. Jolliffe, and M.K. Upadhyaya. 2005. Competitive interactions in mixtures of broccoli and Chenopodium album grown at two levels of UV-B radiation. Weed Res. 45:1-11.

Shrestha, A., D.R. Clements, and M.K. Upadhyaya. 2004. Weed management in agroecosystems: Towards a holistic approach. In: Recent Res. www. Crop Sci. 1: 451-477.

Dai, Q., N.H. Furness, and M.K. Upadhyaya. 2004. UV-absorbing compounds and susceptibility of six weedy species to UV-B radiation. Weed Biol. Manage. 4: 95-102.

Lefort, J., T. Durance, and M.K. Upadhyaya. 2003. Effects of tuber storage and cultivar on the quality of vacuum-microwave-dried potato chips. J. Food Sci. 60:690-696.

Furness, N.H., P.A. Jolliffe, and M.K. Upadhyaya. 2003. Ultraviolet-B-induced shifts in leaf and canopy optical properties alter competitive outcome. Proc. Can. Weed Sci. Soc. 18-26.

Dai, Q. and M.K. Upadhyaya. 2002. Seed germination and seedling growth response of selected weedy species to ultraviolet-B radiation. Weed Sci. 50: 611-615.

Furness, N.H.and M.K. Upadhyaya. 2002. Differential susceptibility of agricultural weeds to ultraviolet-B radiation. Can. J. Plant Sci. 82:789-796.

Shibairo, S.I., M.K. Upadhyaya, and P.M.A. Toivonen. 2002. Changes in water potential, osmotic potential, and tissue electrolyte leakage during mass loss in carrots stored under different conditions. Scientia Hort. 95: 13-21.

Furness, N.H., A. Upadhyaya, and M.K. Upadhyaya. 2002. Comparison of three non-destructive methods for determination of vegetable surface area. HortScience 37:550-553.

Furness, N.H., M.K. Upadhyaya, and D.P. Ormrod. 1999. Seedling growth and leaf surface morphological responses of three rangeland weeds to ultraviolet-B radiation. Weed Sci. 47:427-434.

Clements, D.R., M.K. Upadhyaya, and S.J. Bos. 1999. The biology of Canadian weeds. 110. Tragopogon dubius Scop., Tragopogon pratensis L., and Tragopogon porrifolius L. Can. J. Plant Sci. 79:153-163.

Stabell, E., M.K. Upadhyaya, and B.E. Ellis. 1998. Role of seed coat in regulation of seed germination in Cynoglossum officinale L. Weed Sci. 46:344-350.

Solomon, S.I., M.K. Upadhyaya, and P.M.A. Toivonen. 1998. Potassium nutrition and postharvest moisture loss in carrots (Daucus carotaL.). J. Hort. Sci. and Biotechnol. 73:862-866.

Upadhyaya, M.K. and N.H. Furness. 1998. Stem morphology and leaf surface characteristics of selected raspberry (Rubus idaeus L.) cultivars. HortScience 33:330-332.

Shibairo, S.I., M.K. Upadhyaya, and P.M.A. Toivonen. 1998. Effect of preharvest moisture stress on postharvest weight loss of carrots. J. Hort. Sci. and Biotechnol. 73:347-352.

Shibairo, S.I., M.K. Upadhyaya, and P.M.A. Toivonen. 1998. Replacement of postharvest moisture loss by recharging and its effects on subsequent moisture loss during short-term storage of carrots. J. Amer. Soc. Hort. Sci. 123:141-145.

Shibairo, S.I., M.K. Upadhyaya, and P.M.A. Toivonen. 1997. Postharvest moisture loss characteristics of carrot (Daucus carota L.) cultivars during short-term storage. Sci. Horticulturae 71:1-12.

Bitterlich, I., M.K. Upadhyaya, and S.I. Shibairo. 1996. Weed control in cole and onion (Allium cepa) crops using ammonium nitrate. Weed Sci. 44:952-958.

Stabell, E., M.K. Upadhyaya, and B.E. Ellis. 1996. Development of seed coat-imposed dormancy during Cynoglossum officinale L. seed development. Physiol. Plant. 97:28-34.

Qi, M.Q., M.K. Upadhyaya, and R.A. Turkington. 1996. Dynamics of seed banks and survivorship of meadow salsify (Tragopogon pratensis) populations. Weed Sci. 44:100-108.

Qi, M.Q., M.K. Upadhyaya, and R.A. Turkington. 1996. Reproductive behaviour of natural populations of meadow salsify (Tragopogon pratensis). Weed Sci. 44:68-73.

Popular Articles

Shrestha, A., M.K. Upadhyaya, and D. Clements. 2006. Seeking solutions: Researchers shine a spotlight on alternative weed management tools. American/Western Fruit Grower. 12-14.

Upadhyaya, M.K. 2005. Weed seed dormancy and seed banks. SEARCA Discussion Paper Series (DPS), SEARCA, Las Banos, Philippines.

Upadhyaya, M.K. and N.H. Furness. 2004. Cover crops. AgriDigest 20: 14.

Upadhyaya, M.K. 2004. Using the sun as a weapon – solar heating may help control weeds, nematodes soil-borne insects, and pathogens. American Vegetable Grower. Page 35.

Upadhyaya, M.K., D. Clements, and R.S. Cranston.  2003. Purple loosestrife: Don’t be fooled by this beauty. Agri Digest 19(8):25.

Invited Presentations

Upadhyaya, M.K. 2006. Ecophysiological implications of UV-B effects on plants. Agronomy Department, Kasetsart University, Bangkok, Thailand.

Upadhyaya, M.K. 2005. UV-B radiation effects on plants and their implications. Institute of Biodiversity, Fudan University, Shanghai, Peoples Republic of China.

Upadhyaya, M.K. 2005. Ecophysiology of UV-B radiation effects on weed and crop plants. Department of Agronomy and Biotechnology, China Agricultural University, Peoples Republic of China.

Upadhyaya, M.K. 2003. Persistence strategy of weeds. Seminar, South East Asian Regional Cooperation Agreement (SEARCA) and University of Philippines at Los Banos, Philippines, October 30, 2003.

Upadhyaya, M.K. 2002. Depletion of stratospheric ozone layer and its influence on agriculture, Trinity Western Univ., B.C.

Professional Affiliations

American Society for Horticultural Sciences, Certified Professional Horticulturalist (C.P.H.)
Soil Science Society of America, Certified Professional Crop Scientist (C.P.C.S.)

Awards & Honours

Killam Teaching Award, Univ. of British Columbia (2001)
Fellow of Weed Science Society of America (2004)
Excellence in Weed Science Award, Canadian Weed Science Society (2004)
James F. Richard Service Award, Faculty of Land and Food Systems (2006)