Hao, Xiuming, Ph.D.

Research Scientist, Crop Physiology and Energy Conservation

Contact Information:

2585 County Road 20
Harrow, Ontario N0R 1G0
Telephone: 519-738-1228
Fax: 519-738-2929
Email: xiuming.hao@agr.gc.ca

Areas of Expertise:

  • Greenhouse environmental physiology and energy conservation
  • Development of greenhouse energy conservation technology and strategies to improve energy efficiency
  • Optimization of environmental conditions (light, temperature, humidity and carbon dioxide (CO2) for greenhouse vegetables
  • Improvement of greenhouse microclimate for better fruit yield, quality and integrated pest management
  • Development of water, nutrient and crop management strategies and soiless/hydroponic systems for greenhouse crops
  • Development of year-round vegetable production systems with the use of supplemental lighting

Current Projects:

  • Development of a high-wire cucumber production system on raised-gutters with or without the use of supplemental lighting
  • Dynamic optimization of CO2 enrichment in greenhouse vegetable production
  • Development of plant-based climate control strategies for improving greenhouse microclimate and conserving energy
  • Renewable energy for greenhouses: an assessment of biomass residues and advanced technologies - CO2 enrichment from flue gas of biomass combustion
  • Development and evaluation of a dynamic liquid foam technology for improving greenhouse climate and conserving energy
  • Development of heating and climate control technologies for reducing energy consumption in greenhouse crop production

Affiliations:

  • Member, Ontario Greenhouse & Protected Crops Research and Service Committee
  • Adjunct Professor, University of Laval

Research publications

2018

2017

2016

2015

2012

2011

2010

Other science related publications

2016

  • Naznin, M.T., Gravel, V., and Hao, X.M. (2016). "Different Ratios of Red and Blue LED Light Affect Coriander Productivity and Antioxidant Properties.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016. (Abstract)
  • Naznin, M.T., Gravel, V., and Hao, X.M. (2016). "Different Ratios of Red and Blue LED to improve the Growth of Strawberry Plants.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016. (Abstract)
  • Guo, X.-B., Hao, X.M., Khosla, S., Kumar, K., Tsao, R., and Bennett, N. (2016). "Effect of LED interlighting combined with overhead HPS light on fruit yield and quality of year-round sweet pepper in commercial greenhouse.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016. (Abstract)
  • Guo, X.-B., Hao, X.M., Tsao, R., Zheng, J.M., Little, C., and Khosla, S. (2016). "Response of greenhouse mini-cucumber to different vertical spectra of LED lighting under overhead high pressure sodium and plasma lighting.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016. (Abstract)
  • Guo, X.-B., Hao, X.M., Zheng, J.M., Little, C., and Khosla, S. (2016). "Effects of plasma vs. high pressure sodium lamps on plant growth, fruit yield and quality in greenhouse cucumber production.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016, Presentation. (Abstract)
  • Hao, X.M. (2016). "Lighting strategies using LEDs and HID", Canadian Greenhouse Conference, Niagara Falls, Ontario, Canada, October 5-6, 2016. (Invited Presentation)
  • Hao, X.M. (2016). New cover materials for sustainable greenhouse vegetable production, annual project report to Ontario Greenhouse Vegetable Growers (May 30, 2016), 5 pages (confidential).
  • Hao, X.M., Guo, X.-B., Zheng, J.M., Little, C., and Khosla, S. (2016). "Effects of Plasma vs. High Pressure Sodium Lamps on Plant Growth, Microclimate, Fruit Yield and Quality in Greenhouse Tomato Production.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016, Presentation. (Abstract)
  • Hao, X.M., Little, C., Zheng, J.M., and Tsao, R. (2016). "Far Red LED Improved Fruit Production in Greenhouse Tomato Grown under High Pressure Sodium Lighting.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016. (Abstract)
  • Hao, X.M., Little, C., and Zheng, J.M. (2016). "Effects of HPS Top Lighting, LED Inter-lighting and Their Interaction with Ca Supply in Nutrient Solution in Greenhouse Sweet Pepper Production.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016. (Abstract)
  • Hao, X.M., Zhang, Y.-C., Guo, X.-B., Zheng, J.M., Little, C., and Khosla, S. (2016). "Response of Greenhouse Tomato to Long Photoperiod of LED Interlighting at Different Top HPS Photoperiods and Temperature Integration Regimes.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016. (Abstract)
  • Kumar, K., Hao, X.M., Khosla, S., Guo, X.-B., and Bennett, N. (2016). "Comparison of HPS lighting and the hybrid lighting with top HPS and intra-canopy LED lighting for high-wire mini-cucumber production in a commercial greenhouse.", 8th International Symposium on Light in Horticulture, East Lansing, Michigan, USA, May 22-26, 2016. (Abstract)

2015

  • Hao, X.M. (2015 Confidential). New cover materials for sustainable greenhouse vegetable production, annual project report to Ontario Greenhouse Vegetable Growers (April 1, 2015), 7 pages. (Report)
  • Hao, X.M. (2015 Confidential). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production - Phase 2, Final project report to Ontario Greenhouse Vegetable Growers (Dec. 12, 2015), 9 pages. (Report)
  • Hao, X.M. (2015). "Greenhouse Lighting.", Oral presentation to Ontario Greenhouse Vegetable Growers, OGVG Science Day, Leamington, Ontario, Canada, March 13, 2015. (Presentation)
  • Hao, X.M. (2015). "Improving Light and Energy Use Efficiency in Greenhouse Crop Production", Invited speech at the 4th High-Level International Forum on Protected Horticulture, Shouguang, China, April 19-23, 2015. (Presentation)
  • Hao, X.M. (2015). "Lighting strategies to improve production efficiencies.", Invited speech at Canadian Greenhouse Conference, October 7-8, 2015. (Presentation)
  • Hao, X.M. (2015). Improving efficiency and fruit quality in greenhouse vegetable production, annual project progress report to Ontario Greenhouse Vegetable Growers (April 1, 2015), 9 pages. (Report)
  • Hao, X.M., Guo, X.-B., Chen, X., and Khosla, S. (2015). "Dynamic temperature integration with temperature drop improved the response of greenhouse tomato to long photoperiod of supplemental lighting.", International Symposium on New Technologies and Management for Greenhouse (Greensys2015), Universidade De Évora, Évora, Portugal, July 19-23, 2015, An international symposium on new technologies and management for greenhouses.
  • Hao, X.M., Guo, X.-B., Chen, X., and Khosla, S. (2015). "Please Enter a TitleDynamic temperature integration with temperature drop improved the response of greenhouse tomato to long photoperiod of supplemental lighting.", International Symposium on New Technologies and Management for Greenhouse (Greensys2015), Universidade De Évora, Évora, Portugal, July 19-23, 2015. (Abstract)
  • Hao, X.M., Guo, X.-B., Chen, X., and Khosla, S. (2015). "Response of greenhouse tomato to different vertical spectra of LED lighting under top high pressure sodium and plasma lighting.", International Symposium on New Technologies and Management for Greenhouse (Greensys2015), Universidade De Évora, Évora, Portugal, July 19-23, 2015, An international symposium on new technologies and management for greenhouses. (Poster)
  • Hao, X.M., Guo, X.-B., Chen, X., and Khosla, S. (2015). "Response of greenhouse tomato to different vertical spectra of LED lighting under top high pressure sodium and plasma lighting.", International Symposium on New Technologies and Management for Greenhouse (Greensys2015), Universidade De Évora, Évora, Portugal, July 19-23, 2015. (Abstract)
  • Hao, X.M., Guo, X.-B., Zheng, J.M., Little, C., and Khosla, S. (2015). "Liquid desiccant dehumidification system for improving greenhouse microclimate and energy use efficiency in year-round greenhouse vegetable production.", International Symposium on New Technologies and Management for Greenhouse (Greensys2015), Universidade De Évora, Évora, Portugal, July 19-23, 2015, An international symposium on new technologies and management for greenhouses. (Poster)
  • Hao, X.M., Guo, X.-B., Zheng, J.M., Little, C., and Khosla, S. (2015). "Liquid desiccant dehumidification system for improving greenhouse microclimate and energy use efficiency in year-round greenhouse vegetable production.", International Symposium on New Technologies and Management for Greenhouse (Greensys2015), Universidade De Évora, Évora, Portugal, July 19-23, 2015. (Abstract)
  • Hao, X.M., Zheng, J.M., Guo, X.-B., Little, C., and Khosla, S. (2015). "Effects of diffused cover materials on greenhouse microclimate, plant growth, fruit yield and quality, and energy use in greenhouse cucumber and sweet pepper production.", American Society for Horticultural Science (ASHS) Annual Conference 2015, New Orleans, Louisiana, USA, August 4-7, 2015. (Abstract)
  • Hao, X.M., Zheng, J.M., Little, C., and Khosla, S. (2015). "Hybrid lighting configurations with top HPS lighting and LED inter-lighting and N:K ratios in nutrient feedings affected plant growth, fruit yield, and light and energy use efficiency in greenhouse tomato production.", American Society for Horticultural Science (ASHS) Annual Conference 2015, New Orleans, Louisiana, USA, August 4-7, 2015. (Abstract)
  • Khosla, S., Hao, X.M., and Yang, X. (2015). "Precise fertigation in greenhouse vegetables to minimize offsite nutrient discharge.", International Symposium on New Technologies and Management for Greenhouse (Greensys2015), Universidade De Évora, Évora, Portugal, July 19-23, 2015. (Abstract)
  • Khosla, S., Hao, X.M., and Yang, X.M. (2015). "Precision fertigation in greenhouse Vegetables to minimize offsite nutrient Discharge.", International Symposium on New Technologies and Management for Greenhouse (Greensys2015), Universidade De Évora, Évora, Portugal, July 19-23, 2015.

2014

  • Hao, X.M. (2014 Confidential). New cover materials for sustainable greenhouse vegetable production, progress report to SABIC Innovative Plastics, 9 pages. (Report)
  • Hao, X.M. (2014 Confidential). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production - Phase 2, First annual progress report to Ontario Greenhouse Vegetable Growers (Dec. 12, 2014), 5 pages. (Report)
  • Hao, X.M. (2014). "Lighting from HPS to LED.", Canadian Greenhouse Conference 2014, Niagara Fall, Ontario, Canada, October 8-9, 2014.
  • Hao, X.M. (2014). "Lighting, from HPS to LEDs.", Invited speech at the Canadian Greenhouse Conference, Niagrara Fall, Canada, October 8-9, 2014. (Presentation)
  • Hao, X.M. (2014). Improving efficiency and fruit quality in greenhouse vegetable production, Annual project report to Ontario Greenhouse Vegetable Growers (AIP-029, Activity 4), 6 pages. (Report)
  • Hao, X.M. (2014). New cover materials for sustainable greenhouse vegetable production, Annual project report to Ontario Greenhouse Vegetable Growers (AIP-029, Activity 5), 6 pages. (Report)
  • Hao, X.M. (2014). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production. Annual project report (AAFC, March 31, 2014), 9 pages. (Report)
  • Hao, X.M. (2014). Sustainable Year-Round Greenhouse Vegetable Production with Supplemental lighting. Annual project report (AAFC, March 31, 2014), 10 pages. (Report)
  • Hao, X.M., Guo, X.-B., Chen, X., and Khosla, S. (2014). "Interlighting in mini-cucumbers: interactions with overhead lighting and plant density.", ISHS 29th International Horticultural Congress, Brisbane, Australia, August 17-22, 2014, Oral presentation. (Abstract)
  • Hao, X.M., Guo, X.-B., Tsao, R., Khosla, S., and Chen, X. (2014 Confidential). Sustainable Year-Round Greenhouse Vegetable Production with Supplemental lighting, Final Research Project Report to Ontario Greenhouse Vegetable Growers (July 15, 2014), 28 pages . (Report)
  • Hao, X.M., Zheng, J.M., Little, C., and Khosla, S. (2014). "Effects of LED interlighting on plant growth, fruit yield and quality, and energy use efficiency in greenhouse mini-cucumber production.", 2014 American Society for Horticultural Science Annual Meeting, Orlando, FL, USA, July 28-31, 2014, Oral presentation. (Abstract)
  • Hao, X.M., Zheng, J.M., and Little, C. (2014). "Dynamic temperature integration with temperature drop to improve early fruit yield and energy efficiency in greenhouse cucumber production.", ISHS 29th International Horticultural Congress, Brisbane, Australia, August 17-22, 2014, Poster presentation. (Abstract)
  • Hao, X.M., Zheng, J.M., and Little, C. (2014). "Response of Chrysanthemums to various day-night air temperature differences/drops and root zone temperatures at the same daily integrated temperature.", 2014 American Society for Horticultural Science Annual Meeting, Orlando, FL, USA, July 28-31, 2014, Poster presentation. (Abstract)
  • Hao, X.M., Zheng, J.M., and Little, C. (2014). "Response of poinsettias to dynamic temperature integration with pre-morning and early morning temperature drop and root zone heating.", ISHS 29th International Horticultural Congress, Brisbane, Australia, August 17-22, 2014, Poster presentation. (Abstract)

2013

  • Hao, X.M. (2013 Confidential). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production, Final Research Project Report to Ontario Greenhouse Vegetable Growers, 5 page. (Report)
  • Hao, X.M. (2013 Confidential). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production, Second Interim Research Project Report to Ontario Greenhouse Vegetable Growers, 3 pages. (Report)
  • Hao, X.M. (2013). "How Dynamic Climate Control can Conserve Energy and Improve Crop Productivity.", 55th Annual Horticulture Growers’ Short Course, Abbotsford, BC, January 24-26, 2013. (Presentation)
  • Hao, X.M. (2013). "Lighting research at GPCRC (AAFC-Harrow).", Invited presentation to the 63rd Southwest Horticulture Expo, Leamington, Ontario, November 2013. (Presentation)
  • Hao, X.M. (2013). "Lighting workshop.", Organized by AAFC-Harrow and OMAFRA, Light research greenhouse, Harrow, Ontario, Canada, December 4, 2013. (Presentation)
  • Hao, X.M., Khosla, S., Low, J., and Colasanti, R. (2013 Confidential). New Greenhouse Cover Materials for Improving Crop Productivity and Energy Efficiency in Year-Round Greenhouse Vegetable Production, Final AIP Research Project Report to Ontario Greenhouse Vegetable Growers, 4 pages. (Report)
  • Hao, X.M., Khosla, S., Wen, G., and Chen, X. (2013 Confidential). Evaluation of Philips GreenPower LED Interlighting Module for Greenhouse Mini-Cucumber Production – A Preliminary Study, Project report to Philips Lighting Canada, 25 pages. (Report)
  • Hao, X.M., Tsao, R., Khosla, S., and Haight, D. (2013 Confidential). Evaluation of new light sources for optimizing year-round greenhouse vegetable production system with supplemental lighting, Final AIP Research Project Report to Ontario Greenhouse Vegetable Growers, 5 pages. (Report)
  • Hao, X.M., Tsao, R., and Khosla, S. (2013 Confidential). Sustainable year-round greenhouse vegetable production with supplemental lighting, Second Interim Research Project Report to Ontario Greenhouse Vegetable Growers, 7 pages. (Report)
  • Hao, X.M., Zheng, Y., Dixon, M.A., and Brown, W. (2013). Dynamic greenhouse climate control to conserve energy and improve crop quality, Final Ornamental Cluster Research Project Report, 12 pages. (Report)
  • Khosla, S., Hao, X.M., and Yang, X.M. (2013). "Precision Fertigation in Greenhouse Vegetables to Minimize Offsite Nutrient Discharge.", 29th International Horticultural Congress, Brisbane, Queensland, Australia. (Abstract)

2012

  • Hao, X.M. (2012 Confidential). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production, First Interim Research Project Report to Ontario Greenhouse Vegetable Growers, 3 pages. (Report)
  • Hao, X.M. (2012 Internal). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production. 1st Interim Research Project Report to Ontario Greenhouse Vegetable Growers. (Report)
  • Hao, X.M. (2012 Internal). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production. Annual Research Project Report. (Report)
  • Hao, X.M. (2012 Internal). Sustainable year-round greenhouse vegetable production with supplemental lighting. 2nd Interim Research Project Report to Ontario Greenhouse Vegetable Growers. (Report)
  • Hao, X.M. (2012). "Dynamic Greenhouse Climate Control to Conserve Energy and Improve Crop Quality.", Ornamental Cluster Research & Innovation Forum, Toronto, ON, Canada, December 5, 2012. (Presentation)
  • Hao, X.M. (2012). "Heating & Climate Management for Poinsettias and Chrysanthemums.", Canadian Greenhouse Conference (CGC2012), Scotiabank Convention Centre, Niagara Falls, ON, Canada, October 3-4, 2012. (Presentation)
  • Hao, X.M. (2012). "Improving Light Environment for Year-round Greenhouse Vegetable Production.", Canadian Greenhouse Conference (CGC2012), Scotiabank Convention Centre, Niagara Falls, ON, Canada, October 3-4, 2012. (Presentation)
  • Hao, X.M. (2012). "Lighting for Greenhouse Cucumbers.", Canadian Greenhouse Conference (CGC2012), Scotiabank Convention Centre, Niagara Falls, ON, Canada, October 3-4, 2012. (Presentation)
  • Hao, X.M. (2012). "Potential technologies for northern greenhouses.", Improving Food Security in the North: A Workshop on Sustainable Northern Greenhouses, University of Saskatchewan, Saskatoon, SK,, Canada, November 7-8, 2012. (Presentation)
  • Hao, X.M. (2012). Novel climate control technology to improve energy use efficiency in greenhouse vegetable production, Annual Research Project Report, 6 pages. (Report)
  • Hao, X.M. (2012). Sustainable year-round greenhouse vegetable production with supplemental lighting, Annual Research Project Report, 10 pages. (Report)
  • Hao, X.M., Dorais, M., Ehret, D.L., and Papadopoulos, A.P. (2012). Dynamic plant-based environment control to improve energy use efficiency in greenhouse crop production. Final A-Base Research Project (2008-12) Report, 13 pages. (Report)
  • Hao, X.M., Khosla, S., Wen, G., and Chen, X. (2012 Internal). Evaluation of Philips GreenPower LED Interlighting Module for Greenhouse Mini-Cucumber Production – A Preliminary Study. Project report to Philips Lighting Canada. (Report)
  • Hao, X.M., Tsao, R., and Khosla, S. (2012 Internal). Sustainable year-round greenhouse vegetable production with supplemental lighting. 1st Interim Research Project Report to Ontario Greenhouse Vegetable Growers. (Report)
  • Hao, X.M., Tsao, R., and Khosla, S. (2012). Sustainable year-round greenhouse vegetable production with supplemental lighting, First Interim Research Project Report to Ontario Greenhouse Vegetable Growers, 8 pages. (Report)
  • Hao, X.M., Zheng, J.M., Little, C., and Khosla, S. (2012). "LED inter-lighting in year-round greenhouse mini-cucumber production.", 7th International Symposium on Light in Horticultural Systems, Wageningen, The Netherlands, October 14-18, 2012.
  • Hao, X.M., Zheng, J.M., Little, C., and Khosla, S. (2012). "LED inter-lighting in year-round greenhouse mini-cucumber production.", 7th International Symposium on Light in Horticultural Systems, Wageningen, The Netherlands, October 14-18, 2012. (Abstract)
  • Hao, X.M., Zheng, J.M., and Little, C. (2012). "Dynamic temperature integration with temperature drop to improve early fruit yield in greenhouse cucumber production.", HORTIMODEL 2012, Nanjing, China. (Abstract)
  • Hao, X.M., Zheng, J.M., and Little, C. (2012). "Response of poinsettia to various air temperature drops and root zone temperatures at the same daily integrated temperature.", 109th Annual Conference of the American Society for Horticultural Science (ASHS), InterContinental Miami Hotel, Miami, FL, USA, July 31-August 3, 2012.
  • Hao, X.M., Zheng, Y., Dixon, M.A., and Brown, W. (2012). Dynamic greenhouse climate control to conserve energy and improve crop quality. Annual Research Project Report. (Report)

2011

  • Hao, X.M., Zheng, J.M., and Little, C.M. (2011). "Response of poinsettia to various air temperature drops and root zone temperatures at the same daily integrated temperature.", 108th Annual Conference of the American Society for Horticultural Science (ASHS), Hilton, Waikoloa, HI, USA, September 25-28, 2011.
  • Hao, X.M., Zheng, Y., Dixon, M.A., and Brown, W. (2011). Dynamic greenhouse climate control to conserve energy and improve crop quality. Annual Ornamental Cluster Research Project Report, 10 pages. (Report)
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