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

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Relation http://oar.icrisat.org/12123/
https://www.nature.com/articles/s41893-023-01166-w
https://doi.org/10.1038/s41893-023-01166-w
 
Title Spatially differentiated nitrogen supply is key in a global food–fertilizer price crisis
 
Creator Snapp, S
Sapkota, T B
Chamberlin, J
Cox, C M
Gameda, S
Jat, M L
Marenya, P
Mottalebab, K A
Negra, C
Senthilkumar, K
Sida, T S
Singh, U
Stewart, Z P
Tesfaye, K
Govaerts, B
 
Subject Cereals
India
Ethiopia
Malawi
 
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.
 
Publisher Nature Research
 
Date 2023-06-29
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12123/1/Nature%20Sustainability_01-11_2023.pdf
Snapp, S and Sapkota, T B and Chamberlin, J and Cox, C M and Gameda, S and Jat, M L and Marenya, P and Mottalebab, K A and Negra, C and Senthilkumar, K and Sida, T S and Singh, U and Stewart, Z P and Tesfaye, K and Govaerts, B (2023) Spatially differentiated nitrogen supply is key in a global food–fertilizer price crisis. Nature Sustainability, 6. pp. 1268-1278. ISSN 2398-9629