Phosphorus Extraction and Application Timing on BC Dairy Farms

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Join researchers to discuss technology to extract phosphorous from animal manure and research on phosphorous fertilizer rates for corn.

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Phosphorus Extraction and Application Timing on BC Dairy Farms

Thursday, March 11, 10-11am

Integrated dairy manure management system, Dr. Victor Lo and Dr. Don Mavinic, UBC Department of Civil Engineering

This presentation will share results from a new manure management system that breaks down solid waste and allows for energy production as well as nutrient recovery. The system integrates:

  • an innovative microwave enhanced oxidation process (MW-AOP) for solids destruction in animal waste slurries, and
  • a high rate two-phase anaerobic digestion (TPAD) system for energy production and nutrient recovery via crystallization.

The integrated system provides the best nutrient management scheme with benefits such as eliminating the need for trucking of excess manure, recovering phosphorus and nitrogen, obtaining a value-added product, enhancing anaerobic digestion and improving solid/liquid separation.

The MW-AOP achieves a high level of solids reduction and nutrients release in dairy manure, which then allows the TPAD to complete biogas production in less than 10 days. Nutrients are also recovered for use as a valuable fertilizer that can be used both off-site and on-site.

Results from starter fertilizer trials in silage corn to refine phosphorous application , Dr. Aime Messiga, AAFC Agassiz

This presentation will share recent research on starter phosphorous rates and phosphorous risk indicators in silage corn productions . Since 2018, we have been conducting corn experiments in farmer’s fields in the Fraser Valley and Okanagan. Our results demonstrate that the effect of starter P on young corn plants varies, but does not carryover through harvest. Phosphorus fertilizer recommendations for silage corn can be refined by decreasing starter P rates to 5.0 to 7.5 kg P ha–1 without decreasing dry matter yield at harvest. Refining Phosphorous management is important in light of the new Code of Practice for Agricultural Environmental Management (AEM Code) published in 2019.

Webinar details

  • Sessions will be hosted on zoom and can be joined through any web browser or the zoom app using a computer, tablet or phone.
  • Sessions are available at no cost.
  • Session recordings will be made publicly available and will be shared with all registrants.

Presenter bios

Dr. Victor Lo, UBC Department of Civil Engineering and UBC Dairy Centre

From 1980 to 2017, Dr. Lo was a Faculty Member, UBC. Since July 2017, he has been Professor Emeritus. He is a Professional Engineer (P. Eng.), Province of BC (1980). He is a Fellow of CSEAFBS and EC. He has supervised 10 Ph.D.’s, and over 65 MASc.’s and several PDF’s. He has published over 200 papers in Refereed Journals.

Dr. Lo is the principal investigator and co-inventor of the microwave enhanced advanced oxidation process (MW-AOP) - a patented microwave-peroxide technology for treatment of organic slurries, such as sewage sludge, food and agricultural wastes. He has over 40 years of experience in biological process applications for waste treatment and resource recovery.

Dr. Donald Mavinic, UBC Department of Civil Engineering

Dr. Mavinic completed his BASc. in 1969 and Ph.D. in 1973, both at the U. of Windsor. From 1973-2018, he was a Faculty Member, UBC. Since January 2018, he has been Professor Emeritus. He is a Professional Engineer (P.Eng.), Province of B.C. (1974). He has mentored 30 Ph.D.’s, approximately 180 MASc.’s and dozens of PDF’s and PA’s. He is currently a Fellow of: CSCE, CAE, EIC, EC, and WEF (Water Environment Federation). Over the last 12-13 years, he has delivered over 50 keynote and invited speakerships; he has been consultant to over 80 different firms and government agencies. Dr. Mavinic is a former Associate Dean, Faculty of Graduate Studies and the Faculty of APSC. He is also a Killam Research Scholar. He is co-founder, Ostara Inc. Vancouver (2005) and was a Board member 2005-2009. Currently, he is President and Acting CEO, BOOST, Inc. (UBC spinoff, since 2016). He is also a Manning Foundation Laureate (2010), NSERC Synergy Awardee (2011), Engineers Canada Gold Medalist (2016), Order of Canada (2019) and a recipient of the Dean’s Medal of Distinction (UBC) in 2020. In 2017-18, he chaired the Expert Panel ECCC-Ottawa, on Wastewater Management and Challenges in Canada. He is a former Board Member of at least 10 private and public companies and Federal Agencies.

Dr. Aimé Messiga, Agriculture and Agri-Food Canada, Agassiz

Dr. Aimé Messiga is a Research Scientist at Agriculture and Agri-Food Canada (Agassiz Research and Development Centre). His research program focuses on soil and nutrient management. His current projects aim at improving our understanding of nutrient cycling and dynamics, particularly phosphorus, in field crops and berry production systems. More specifically, Dr. Messiga is collaborating with colleagues across Canada and local industry to improve starter fertilizer P recommendations in silage corn systems and to adapt an agri-environmental indicator of the risk of P transfer from fields to water sources for soils of British Columbia. Dr. Messiga serves as Associate Editor for the Canadian Journal of Soil Science and was awarded the Outstanding Associate editor in 2017. Dr. Messiga has published 33 peer-reviewed articles and delivered more than 50 talks at national and international conferences and extensions meetings.

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