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

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Title Maize crop nutrient input requirements for food security in sub-Saharan Africa
 
Creator Berge, Hein F.M. ten
Hijbeek, Renske
Loon, Marloes P. van
Rurinda, Jairos
Tesfaye, Kinde
Zingore, Shamie
Craufurd, Peter Q.
Heerwaarden, Joost van
Brentrup, Frank
Schröder, Jaap J.
Boogaard, Hendrik L.
Groot, Hugo L.E. de
Ittersum, Martin K. van
 
Subject climate change
agriculture
food security
intensification
maize
yield gap
soil fertility
 
Description 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.
 
Date 2019-03-27
2019-04-01T12:59:38Z
2019-04-01T12:59:38Z
 
Type Journal Article
 
Identifier Ten Berge HFM, Hijbeek R, van Loon MP, Rurinda J, Tesfaye K, Zingore S, Craufurd PQ, van Heerwaarden J, Brentrup F, Schröder JJ, Boogaard HL, de Groot HLE, van Ittersum MK. 2019. Maize crop nutrient input requirements for food security in sub-Saharan Africa. Global Food Security, 23:9-21.
2211-9124
https://hdl.handle.net/10568/100664
https://www.sciencedirect.com/science/article/pii/S2211912418301445?via%3Dihub
https://doi.org/10.1016/j.gfs.2019.02.001
PII-FP3_CropNutrientGap
PII-FP3_SAMPLES
 
Language en
 
Rights CC-BY-NC-ND-4.0
Open Access
 
Format 9-12
 
Source Global Food Security