The webinar intends to give an overview of our knowledge about current manure management practices in sub-Saharan Africa and their impacts on GHG and ammonia emissions and other externalities (e.g., leaching, health hazards). The discussions after the presentation will be about identifying pressing knowledge gaps linked to manure and ideas for collaboration. The aim for collaboration could be to explore opportunities for joint in-depth analysis of the current manure management systems and how efficiently manure is recycled to fertilize soil and reduce GHG emissions, and to follow this up with studies filling the knowledge gaps identified.

Speakers:

David Pelster

Dr. Pelster is a soil scientist at Agriculture and Agri-Food Canada (AAFC) specializing on nitrogen [N] cycling in agricultural systems with a focus on measuring and mitigating ammonia and greenhouse gas (GHG – methane and nitrous oxide in particular) emissions related to agriculture. Dr. Pelster also worked as a scientist with the International Livestock Research Institute in Nairobi, Kenya, measuring and investigating practices to help mitigate GHG emissions from manure and soil management in smallholder agricultural systems.

Sonja Leitner

Sonja is an ecologist and biogeochemist working on carbon and nitrogen cycling in natural and agricultural ecosystems. She investigates nutrient transformations and nutrient losses via gaseous emissions and leaching, with a special focus on greenhouse gas emissions (CO₂, CH₄, N₂O). Her aim is to develop options for soil and manure management that reduce nutrient losses to improve livestock productivity and help achieve climate change mitigation and adaptation. Sonja works in mixed crop-livestock systems and pastoral rangelands in projects Kenya, Uganda, Tanzania, and Ethiopia.

Ngwa Martin Ngwabie

Martin is an experienced engineer and consultant with over 20 years practical knowledge on greenhouse gas inventory, mitigation and adaptation strategies from livestock barns, manure and waste management in Germany, Sweden, Canada and Cameroon. He also assesses the biomethane potential of different feedstock and their blends.  He was a contributing author in the revised IPCC 2019 guidelines on Emissions from Manure Management. He has consulted for Agriculture and Agri-Food Canada, Environment Canada as well as the International Livestock Research Institute. He has been at the forefront of research on greenhouse gas emissions from livestock production systems in West-Africa for the past 10 years.

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