Forge, Thomas, Ph.D.

Research Scientist


Contact Information:

4200 Highway 97
PO Box 5000
Summerland, British Columbia V0H 1Z0
Telephone: 250-494-2119
Fax: 250-494-7711
Email: tom.forge@agr.gc.ca

Areas of Expertise:

  • Soil ecology and nematology
  • Cultural management of plant-parasitic nematodes
  • Influences of organic amendments on root diseases and soil health indicators
  • Sustainable soil, nutrient and water management for high-value horticultural crops

Current Projects:

  • Root diseases of perennial fruit crops: Impacts of climate change and sustainable water management strategies
  • Role of plant-parasitic nematodes in root decline of blueberry
  • Biological interactions fundamental to the environmentally sustainable production of high-quality blueberries
  • Effects of alternative mulches on blueberry root health, productivity and nutrient management
  • Impacts of plant-parasitic nematodes on root dynamics and productivity of wine grapes in the Okanagan Valley
  • Influences of nitrogen sources and cover crops on soil health indicators and root diseases of red raspberry

Affiliations:

  • Adjunct Professor, University of British Columbia
  • Canadian Phytopathological Society
  • Canadian Society for Soil Science
  • Society of Nematologists

Research Publications:

The links below lead to abstracts with access to full text.

2016

2015

2014

2013

2012

2011

2010

2009

Other Science Related Publications:

2016

  • Forge, T.A., Neilsen, D., Neilsen, G.H., Hannam, K.D., Randall, P., and Wambold, L. (2016). "Water-conserving mulch and micro-irrigation practices affect assemblages of nematodes parasitizing winegrape in the Okanagan Valley.", Canadian Journal of Plant Pathology. (Abstract)
  • Lang, G., Blatt, S.E., Forge, T.A., Lordan, J., Neilsen, D., Reig, G., and Robinson, T. (2016). "Integrating Sweet Cherry Canopy Architectures and Rootstocks in Different Environments: the NC140 Trial Results from Michigan, New York, British Columbia, and Nova Scotia.", XI International Symposium on Integrating Canopy, Rootstock and Environmental Physiology in Orchard Systems.
  • O'Gorman, D.T., Haag, P., Forge, T.A., and Urbez-Torres, J.R. (2016). "Identification and characterization of the fungal pathogens inhabiting the root zone of sweet cherry (Prunus avium L.) in the Okanagan Valley of British Columbia.", Canadian Journal of Plant Pathology. doi : 10.1080/07060661.2016.1139308 (Abstract)
  • O'Gorman, D.T., Haag, P., Urbez-Torres, J.R., Forge, T.A., Nelson, L.M., and Toivonen, P.M.A. (2016). Characterization and management of two cherry diseases in the Okanagan: cherry slip skin and cherry replant disease. AIP-ASP reporting: BC Cherry Growers Association/Summerland Varieties Corp - Interim Report, January 1,2016. (Report)
  • Watson, T.T., Nelson, L.M., Neilsen, G.H., Neilsen, D., O'Gorman, D.T., and Forge, T.A. (2016). "Control of Pratylenchus penetrans on sweet cherry using organic soil amendments.", Canadian Journal of Plant Pathology. (Abstract)

2015

  • Forge, T.A., Neilsen, D., Neilsen, G.H., Hannam, K.D., Randall, P., and Wambold, L. (2015). "Water-conserving mulch and micro-irrigation practices affect assemblages of nematodes parasitizing wine grape in the Okanagan Valley.", Canadian Phytopathological Society BC. Regional Meetings, Abbotsford, BC, Canada, October 21, 2015. (Presentation)
  • Forge, T.A., Neilsen, D., Zebarth, B.J., Neilsen, G.H., Kenney, E., Hashimoto, N., and Watson, T.T. (2015). "Using compost amendmenets to enhance soil health and replant establishment of tree-fruit and berry crops.", 3rd International Symposium on Organic Matter Management and Compost Use in Horticulture, International Society for Horticultural Science, Murcia, Spain, April 20-24, 2015.
  • Mimee, B., Bélair, G., Yu, Q., Forge, T.A., Rott, M., and Tenuta, M. (2015). "La génomique et les nouvelles technologies au service de la biovigilance des nématodes phytoparasites.", Journée de la science, Centre de recherche et développement en horticulture. (Presentation)
  • Neilsen, D., Neilsen, G.H., and Forge, T.A. (2015). "Irrigation and nutrient management in tree fruit production systems.", Apple and Pear Horticulture, WSU Fruit School, Wenatchee, WA, USA, November 17, 2015, Presentation. (Abstract)
  • Neilsen, D., Neilsen, G.H., and Forge, T.A. (2015). "Precision nutrient and water management for irrigated woody perennial crops.", AAFC Science Day, July 9, 2015. (Presentation)
  • Neilsen, D., Smith, C.A.S., Neilsen, G.H., and Forge, T.A. (2015). "Underlying Challenges and Issues in Adaptation Research.", Agriculture and Climate Change Adaptation Research Workshop, Kelowna, BC, December 10, 2015. (Abstract)
  • Watson, T.T., Nelson, L.M., Neilsen, D., Neilsen, G.H., O'Gorman, D.T., and Forge, T.A. (2015). "Control of Pratylenchus penetrans on sweet cherry using organic soil amendments.", Canadian Phytopathological Society BC. Regional Meetings, Abbotsford, BC, October 21, 2015. (Presentation)
  • Watson, T.T., Nelson, L.M., and Forge, T.A. (2015). "Alternative management of root-lesion nematodes (Pratylenchus penetrans) and Cylindrocarpon/Ilyonectria spp. Impacting apple and sweet cherry during replant establishment.", Canadian Journal of Plant Pathology, 37(2), pp. 245. doi : 10.1080/07060661.2015.1027547 (Abstract)
  • Zebarth, B.J., Ryan, M.C., Graham, G.L., Forge, T.A., and Neilsen, D. (2015). "Addressing groundwater nitrate contamination associated with intensive agricultural production systems: The Abbotsford-Sumas Aquifer case study.", Internal Association of Hydrogeologists – Canadian National Chapter Annual Meeting, Waterloo, ON, Canada, October 27-30, 2015.

2014

  • Dossett, M.P., Forge, T.A., Koch, C.A., and Kempler, C. (2014). "Resistance to Phytophthora rubi in wild North American red raspberry germplasm.", 2014 American Society for Horticultural Science Annual Meeting, Orlando, FL, USA, July 28-31, 2014. (Abstract)
  • Fentabil, M., Nichol, C.F., Hannam, K.D., Neilsen, D., Forge, T.A., Neilsen, G.H., and Jones, M.D. (2014). "Nitrous oxide emissions from micro-irrigated grape and apple fields located in the semi-arid Okanagan region of British Columbia.", ASA, CSSA and SSSA International Annual Meeting 2014, Long Beach, CA, USA, November 2-5, 2014, Number 96-13. (Abstract)
  • Fentabil, M., Nichol, C.F., Hannam, K.D., Neilsen, D., Forge, T.A., and Neilsen, G.H. (2014). "Annual greenhouse gas fluxes in drip and microspray irrigated vineyards and orchards in the Okanagan Valley, British Columbia.", Annual meeting of the Canadian Soil Science Society, Banff, Alberta, Canada, May 4-7, 2014. (Abstract)
  • Forge, T.A., Neilsen, D., Hannam, K.D., Neilsen, G.H., Jones, M.J., and Nichol, C.F. (2014). "Root growth and development of nematode communities in a young Merlot grape (Vitis vinifera L.) vineyard: Influence of irrigation and organic amendments.", ASA, CSSA and SSSA International Annual Meeting 2014, Long Beach, CA, USA, November 2-5, 2014, Number 145-9. (Abstract)
  • Forge, T.A., Neilsen, D., and Neilsen, G.H. (2014). "PARC Research update-root zone ecology and management.", Cherry Notes Newsletter of the British Columbia Cherry Association(January), pp. 6-7.
  • Forge, T.A., Neilsen, D., and Neilsen, G.H. (2014). "PARC Research update-root zone ecology and management.", Cherry Notes Newsletter of the British Columbia Cherry Association(January), pp. 6-7. (Newsletter)
  • Forge, T.A., Neilsen, G.H., Broersma, K., and Neilsen, D. (2014). "Application of municipal biosolids alters the structure of nematode communities in rangeland soils in the southern interior of British Columbia.", Annual meeting of the Canadian Soil Science Society, Banff, Alberta, Canada, May 4-7, 2014. (Abstract)
  • Forge, T.A., Neilsen, G.H., Neilsen, D., and Hogue, E.J. (2014). "Assessing soil health for tree-fruit and vine crops.", 2013 Washington State Horticultural Association 109th Annual Meetings, Wenatchee, WA, USA, December 2-4, 2013.
  • Forge, T.A., Neilsen, G.H., and Neilsen, D. (2014). "Assessing soil health for tree fruit and vine crops.", 109th Annual Meeting, Wenatchee, WA, USA, pp. 329-334.
  • Hampson, C.R., Neilsen, D., Neilsen, G.H., and Forge, T.A. (2014). Report of cooperative regional project NC-140 / British Columbia: Improving economic and environmental sustainability in tree fruit production through changes in rootstock use. http://www.nc140.org/annualreports.html. (Report)
  • Hannam, K.D., Forge, T.A., Neilsen, G.H., Neilsen, D., Jones, M.D., and Nichol, C.K. (2014). "Implications of irrigation and soil amendment practices for soil nutrient dynamics and yield in a young Merlot grape (Vitis vinifera) vineyard.", 2014 CSSS Annual Meeting, Banff, Alberta, Canada. (Abstract)
  • Hannam, K.D., Jones, M.D., Neilsen, D., Midwood, A., Forge, T.A., Neilsen, G.H., and Millard, P. (2014). "Bicarbonates in irrigation water can alter the C13 signature and rate of soil respiration-evidence from a 10 year-old apple orchard in the Okanagan valley, British Columbia.", 2014 CSSS Annual Meeting, Banff, Alberta, Canada. (Abstract)
  • Hannam, K.D., Neilsen, G.H., Neilsen, D., Forge, T.A., Jones, M.J., Nichol, C.F., and Fentabil, M. (2014). "Soil nutrient dynamics and yield in a young Merlot grape (Vitis vinifera L.) vineyard; implications of irrigation and soil amendment practices.", ASA, CSSA and SSSA International Annual Meeting 2014, Long Beach, CA, USA, November 2-5, 2014, Number 139-8. (Abstract)
  • Hannam, K.D., Neilsen, G.H., and Forge, T.A. (2014). Effects of three years of Big Horn Natural Compost on soil properties, vine nutrient status, fruit quality and yield - Industry report to Big Horn Compost. (Report)
  • Loo, S., Ryan, M.C., Zebarth, B.J., and Forge, T.A. (2014). "Quantifying the impact of an individual agricultural field on groundwater nitrate.", Geological Society of America Conference, Vancouver, British Columbia, Canada, October 19-22, 2014. (Abstract)
  • Neilsen, D., Neilsen, G.H., and Forge, T.A. (2014). "Dwarfing rootstocks and training systems affect initial growth, cropping and nutrition in Skeena sweet cherry.", 29th International Hort. Congress, Australia, http://www.ihc2014.org/Abstract, pp. 95. (Abstract)
  • Neilsen, G.H., Forge, T.A., and Neilsen, D. (2014). "Does organic matter matter?", 109th Annual Meeting, Wenatchee, WA, USA, pp. 314-321.
  • Neilsen, G.H., Forge, T.A., and Neilsen, D. (2014). "Does organic matter?", 2013 Washington State Horticultural Association 109th Annual Meetings, Wenatchee, WA, USA, December 2-4, 2013.

2013

  • Forge, T.A., Neilsen, G.H., Neilsen, D., O'Gorman, D.T., Hogue, E.J., Angers, D.A., and Bissonnette, N. (2013). "Organic orchard soil management practices affect soil biology and organic matter", II International symposium of organic matter management and compost use in horticulture III Workshop of bioproducts for agriculture and III Workshop of Ibero-american network for biological fertilizers for agriculture, Santiago, Chile, pp. 31.
  • Forge, T.A., Walters, T.W., Particka, M., and Koch, C.A. (2013). "Use of dairy manure solids as mulch for establishment of red raspberry: influences on soil nematode communities and N and P availability.", CSSS/MSSS/CSAFM 2013 Annual Meeting, Winnipeg, MB., Canada, June 22-25, 2013, pp. 101. (Abstract)
  • Neilsen, D., Neilsen, G.H., Forge, T.A., and Cline, J.A. (2013). "The effects of crop load and water stress on yield and fruit quality of sweet cherry cultivars.", ASHS Annual Conference, HortSci. Supplement: S213. (Abstract)
  • Neilsen, D., Neilsen, G.H., and Forge, T.A. (2013). NC-140 BC 2013 State Report_Cherry., Canada: Okanagan Kootenay Cherry Growers' Association (OKCGA), BC, Canada. (Report)
  • Neilsen, D., Neilsen, G.H., and Forge, T.A. (2013). Report of cooperative regional project NC-140 / British Columbia: Improving economic and environmental sustainability in tree fruit production through changes in cherry rootstock use. http://www.nc140.org/annualreports.html. (Report)
  • Neilsen, G.H., Forge, T.A., Neilsen, D., O'Gorman, D.T., and Bissonnette, N. (2013). "Soil and nutrient management in organic orchard production.", ASA/CSSA/SSSA International annual meeting, Tampa, Florida, USA, November 3-6, 2013, SSSA division soil fertility and plant nutrition, Abstract 133-9, pp. 103. (Abstract)

2012

  • Forge, T.A. (2012). "Alternative raspberry field renovation practices and the use of organic amendments: Implications for root diseases and nitrate leaching.", 57th Annual North Willamette Horticulture Society Meeting, Canby, OR, USA, January 10-12, 2012, Berry Section.
  • Forge, T.A. (2012). "Comparing Poultry Manure and Compost as Preplant Soil Amendments for Enhanced Root Health.", Compost Matters 2012 Workshop, Composting Council of Canada, Vancouver, BC, Canada, February 15-16, 2012.
  • Forge, T.A. (2012). "Evaluation of alternatives to fumigation.", 54th Annual Horticulture Growers’ Short Course, Abbotsford, BC, Canada, January 26-28, 2012.
  • Forge, T.A. (2012). "Using composts in berries: influences on soil health.", 57th Annual North Willamette Horticulture Society Meeting, Canby, OR, USA, January 10-12, 2012, Organic Section.
  • Forge, T.A., Kenney, E., Neilsen, D., and Zebarth, B.J. (2012). "Alternatives to fumigation.", 54th Annual Horticulture Growers’ Short Course, Abbotsford, BC, Canada, January 26-28, 2012, pp. 29-32.

2011

  • Collins, D.P., Cogger, C.G., Kennedy, A., Forge, T.A., Collins, H.P., Bary, A.I., and Rossi, R. (2011). "Multi-scale variation of soil quality indices and association with edaphic properties.", 2011 ASA-CSSA-SSSA International Annual Meeting: Fundamental for life: soil, crop and environmental sciences, San Antonio, TX, USA, October 16-19, 2011. (Abstract)
  • Forge, T.A. (2011). "A better understanding of the impact of fumigation and alternatives on soils, pests and crops.", 53st Annual Horticulture Growers' Short Course, Abbotsford, BC, Canada, January 27-29, 2011.
  • Forge, T.A. (2011). "Soil and water management for healthy blueberry root systems.", Scotia Horticultural Congress 2011, Wolfville, NS, Canada, January 24-25, 2011.
  • Forge, T.A. (2011). "Soil ecology and alternative mulches for blueberry.", COABC 2011 "The Next Generation" Conference, Sidney, BC, Canada, March 4-6, 2011.
  • Forge, T.A. (2011). "Sustainable soil and nutrient management for fruit crops: Implications for root health.", UBC-Okanagan, Kelowna, BC, Canada, October 20, 2011.
  • Forge, T.A., Neilsen, D., Neilsen, G.H., and Hogue, E.J. (2011). "Influences of organic mulches on development of root-lesion nematode populations in relation to indicators of soil food web structure during apple orchard establishment.", Canadian Journal of Plant Pathology, 33, pp. 276. (Abstract)
  • Forge, T.A., Neilsen, G.H., Neilsen, D., Walters, T.W., and Koch, C.A. (2011). "Using organic amendments and mulches to preferentially enhance biological activity and suppress plant pathogens in root zone soil under perennial fruit crops.", Soils Ecology Society Meeting 2011, University of British Columbia - Okanagan, Kelowna, BC, Canada, May 24-27, 2011.
  • Forge, T.A., Neilsen, G.H., Smit, R., Neilsen, D., Bowen, P.A., Hannam, K., and Hannam, K.D. (2011). "Nematode parasites of grapevines in the Okanagan Valley: What are their potential impacts? What can we do about them?", 12th Annual Enology & Viticulture Conference and Trade Show, Penticton, BC, Canada, July 18-19, 2011.
  • Hannam, K.D., Neilsen, G.H., Neilsen, D., and Forge, T.A. (2011). "Improving the yeast assimiliable nitrogen status of wine grape juice.", 12th Annual Enology & Viticulture Conference and Trade Show, Penticton, BC, Canada, July 18-19, 2011.
  • Neilsen, D., Neilsen, G.H., Forge, T.A., Guak, S., and Herbert, L.C. (2011). "Effects of irrigation stress and crop load on yield and quality of Ambrosia/M.9 apple trees.", HortScience, 46(9), pp. S115. (Abstract)
  • Neilsen, G.H., Neilsen, D., Forge, T.A., Guak, S., and Herbert, L.C. (2011). "Irrigation strategy and crop load affect nutrition management of drip-fertigated Ambrosia/M.9 apple trees 359-2 S04 Soil fertility and plant nutrition.", 2011 ASA-CSSA-SSSA International Annual Meeting: Fundamental for life: soil, crop and environmental sciences, San Antonio, TX, USA, October 16-19, 2011, Session: Management strategies to improve nutrient use efficiency I.
  • Neilsen, G.H., Neilsen, D., Forge, T.A., Hannam, K., and Hannam, K.D. (2011). "Urea sprays to improve yeast assimiliable N concentration in grape at harvest.", 12th Annual Enology & Viticulture Conference and Trade Show, Penticton, BC, Canada, July 18-19, 2011.
  • Valenzuela-Estrada, L.R., Bryla, D.R., Hoashi-Erhardt, W.K., Moore, P.P., and Forge, T.A. (2011). "Root traits associated with Phytophthora root rot resistance in red raspberry.", International Society for Horticultural Science (ISHS) 10th Rubus & Ribes Symposium, Zlatibor, Serbia, June 22-26, 2011. (Abstract)

2010

  • Diarra, M.S., Rempel, H., Leslie, M., Forge, T.A., Bittman, S., Kannangara, T., and Topp, E. (2010). "Persistence of antibiotic resistant Escherichia coli in soil fertilised with chicken litter.", 2nd American Society for Microbiology (ASM) Meeting on Antimicrobial Resistance in Zoonotic and Foodborne Pathogens in Animals, Humans and the Environment, Toronto, ON, Canada, June 8-11, 2010. (Poster)

2009

  • Bissonnette, N., Angers, D.A., Neilsen, G.H., Neilsen, D., Hogue, E.J., and Forge, T.A. (2009). "Utilisation de residus de paillis organiques en production biologique de pommiers: effect sur la matiere organique du soil.", 23e Congrès annuel de l’Association Québécoise des Spécialistes en Science du Sol (AQSSS): La rivière, reflet de la gestion des terres, l'auberge le Baluchon, St-Paulin, QC, Canada, May 19-22, 2009, pp. 72.
  • Herath, A., Zhang, T.Q., Hamel, C., Bittman, S., Forge, T.A., Tan, C.S., Goss, M.J., and Welacky, T.W. (2009). "Phosphorus fraction distributions in soils under various management practices in Canada.", Joint Annual Meeting of the CSA-CSSS-CSAFM: Sciences for Sustainability: Soils, Agronomy, and Atmosphere, University of Guelph, Guelph, ON, Canada, August 5-7, 2009. (Abstract)
  • Herath, A., Zhang, T.Q., Hamel, C., Tan, C.S., Forge, T.A., Lafond, G.P., and Goss, M.J. (2009). "Development of a soil Phosphorus Test for Prediction of Long-term Soil Phosphorus Loss.", Great Lakes Phosphorus Forum with SERA-17 Annual Meeting, Hilton Hotel and St. Clair Centre, Windsor, ON, Canada, July 28-31, 2009. (Poster)
  • Neilsen, G.H., Neilsen, D., Hogue, E.J., Rabie, B., Herbert, L.C., Forge, T.A., Angers, D.A., and Bissonnette, N. (2009). "Use of composts in organic apple production.", 19th Annual National Compost Conference, Vancouver, BC, Canada, September 30-October 2, 2009.
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