Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 549774
Title Maize crop nutrient input requirements for food security in sub-Saharan Africa
Author(s) Berge, H.F.M. ten; Hijbeek, R.; Loon, M.P. van; Rurinda, J.; Tesfaye, K.; Zingore, S.; Craufurd, P.; Heerwaarden, J. van; Brentrup, F.; Schröder, J.J.; Boogaard, H.L.; Groot, H.L.E. de; Ittersum, M.K. van
Source Global Food Security 23 (2019). - ISSN 2211-9124 - p. 9 - 21.
DOI https://doi.org/10.1016/j.gfs.2019.02.001
Department(s) Agro Field Technology Innovations
Plant Production Systems
PE&RC
Earth Observation and Environmental Informatics
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Cereals - Crop nutrient requirements - Food self-sufficiency - Intensification - Maize - Soil fertility - Sub-saharan Africa - Yield gaps - Zea mays
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.

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