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Efforts to reduce phosphorus losses from agricultural systems have primarily focused on improving on-farm phosphorus use efficiency. Often overlooked are the phosphorus losses that occur between crop harvest and food consumption, which can be of a similar magnitude to on-farm losses. This talk provides an overview of global phosphorus flows through livestock production systems and human consumption. The opportunities for recycling phosphorus-containing "wastes" from the food chain is dependent on the proximity of crop production and consumption. The spatial separation of croplands requiring P fertilizers and areas producing wastes is increasing due to growth in global trade and the continued industrialization of livestock production systems.
About the speaker
Meagan Schipanski is a postdoctoral fellow at McGill University researching the influence of agriculture trade on the global and regional distribution of phosphorus. She received her B.A. in Biology from Oberlin College and her Ph.D. in Horticulture from Cornell University. Her dissertation research focused on nitrogen and carbon cycling in agroecosystems with an emphasis on analyzing the biotic and abiotic factor...
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