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Spatially differentiated nitrogen supply is key in a global food–fertilizer price crisis

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Title Spatially differentiated nitrogen supply is key in a global food–fertilizer price crisis
 
Creator Snapp, Sieglinde S.
Sapkota, Tek Bahadur
Chamberlin, Jordan
Cox, Cindy
Gameda, Samuel
Jat, Mangi Lal
Marenya, Paswel Phiri
Mottaleb, Khondoker Abdul
Negra, Christine
Senthilkumar, Kalimuthu
Sida, Tesfaye Shiferaw
Singh, Upendra
Stewart, Zachary
Fantaye, Kindie Tesfaye
Govaerts, Bram
 
Subject nitrogen
food security
fertilizers
farming systems
yields
prices
 
Description A regional geopolitical conflict and sudden massive supply disruptions have revealed vulnerabilities in our global fuel–fertilizer–food nexus. As nitrogen (N) fertilizer price spikes threaten food security, differentiated responses are required to maintain staple cereal yields across over- and underfertilized agricultural systems. Through integrated management of organic and inorganic N sources in high- to low-input cereal production systems, we estimate potential total N-fertilizer savings of 11% in India, 49% in Ethiopia and 44% in Malawi. Shifting to more cost-effective, high-N fertilizer (such as urea), combined with compost and integration of legumes, can optimize N in N-deficient systems. Better targeted and more efficient N-fertilizer use will benefit systems with surplus N. Geospatially differentiated fertilization strategies should prioritize high-N fertilizer supply to low-yield, N-deficient locations and balanced fertilization of N, P, K and micronutrients in high-yield systems. Nationally, governments can invest in extension and realign subsidies to enable and incentivize improved N management at the farm level.
 
Date 2023
2023-07-20T20:34:29Z
2023-07-20T20:34:29Z
 
Type Journal Article
 
Identifier Snapp, S., Sapkota, T. B., Chamberlin, J., Cox, C. M., Gameda, S., Jat, M. L., Marenya, P., Mottaleb, K. A., Negra, C., Senthilkumar, K., Sida, T. S., Singh, U., Stewart, Z. P., Tesfaye, K., & Govaerts, B. (2023). Spatially differentiated nitrogen supply is key in a global food–fertilizer price crisis. Nature Sustainability. https://hdl.handle.net/10883/22650
2398-9629
https://hdl.handle.net/10568/131233
https://hdl.handle.net/10883/22650
https://doi.org/10.1038/s41893-023-01166-w
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format application/pdf
 
Publisher Springer
 
Source Nature Sustainability