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Maize crop nutrient input requirements for food security in sub-Saharan Africa

Author: Berge, H.F.M. ten
Author: Hijbeek, R.
Author: Loon, M.P. van
Author: Rurinda, J.
Author: Fantaye, K.T.
Author: Shamie Zingore
Author: Craufurd, P.
Author: Heerwaarden, Joost van
Author: Brentrup, F.
Author: Schröder, J.J.
Author: Boogaard, H.
Author: Groot, H.L.E. de
Author: Ittersum, M.K. van
Year: 2019
ISSN: ISSN: 2211-9124
URI: https://hdl.handle.net/10883/20114
Abstract: Nutrient limitation is a major constraint in crop production in sub-Saharan Africa (SSA). Here, we propose a generic and simple equilibrium model to estimate minimum input requirements of nitrogen, phosphorus and potassium for target yields in cereal crops under highly efficient management. The model was combined with Global Yield Gap Atlas data to explore minimum input requirements for self-sufficiency in 2050 for maize in nine countries in SSA. We estimate that yields have to increase from the current ca. 20% of water-limited yield potential to approximately 50–75% of the potential depending on the scenario investigated. Minimum nutrient input requirements must rise disproportionately more, with N input increasing 9-fold or 15-fold, because current production largely relies on soil nutrient mining, which cannot be sustained into the future.
Format: PDF
Language: English
Publisher: Elsevier
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Place of Publication: Amsterdam (Netherlands)
Pages: 9-21
Volume: 23
DOI: 10.1016/j.gfs.2019.02.001
Keywords: Crop Nutrient Requirements
Keywords: Food Self-Sufficiency
Agrovoc: INTENSIFICATION
Agrovoc: MAIZE
Agrovoc: CEREALS
Agrovoc: YIELD GAP
Agrovoc: NUTRIENTS
Agrovoc: FOOD SECURITY
Agrovoc: SOIL FERTILITY
Agrovoc: ZEA MAYS
Related Datasets: https://ars.els-cdn.com/content/image/1-s2.0-S2211912418301445-mmc1.docx
Journal: Global Food Security


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  • Socioeconomics
    Including topics such as farming systems, markets, impact & targeting, innovations, and GIS
  • Sustainable Intensification
    Sustainable intensification agriculture including topics on cropping systems, agronomy, soil, mechanization, precision agriculture, etc.

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