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

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

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.

LanguageEnglish
Pages9-21
JournalGlobal Food Security
Volume23
DOIs
Publication statusPublished - Dec 2019

Fingerprint

Food Supply
Africa South of the Sahara
Sub-Saharan Africa
food security
Nutrients
Zea mays
Crops
maize
food
fold
Food
crop
corn
self sufficiency
water yield
nutrient
nutrient limitation
nutrients
crops
crop production

Keywords

  • Cereals
  • Crop nutrient requirements
  • Food self-sufficiency
  • Intensification
  • Maize
  • Soil fertility
  • Sub-saharan Africa
  • Yield gaps
  • Zea mays

Cite this

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title = "Maize crop nutrient input requirements for food security in sub-Saharan Africa",
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.",
keywords = "Cereals, Crop nutrient requirements, Food self-sufficiency, Intensification, Maize, Soil fertility, Sub-saharan Africa, Yield gaps, Zea mays",
author = "{ten Berge}, H.F.M. and R. Hijbeek and {van Loon}, M.P. and J. Rurinda and K. Tesfaye and S. Zingore and P. Craufurd and {van Heerwaarden}, J. and F. Brentrup and J.J. Schr{\"o}der and H.L. Boogaard and {de Groot}, H.L.E. and {van Ittersum}, M.K.",
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Maize crop nutrient input requirements for food security in sub-Saharan Africa. / ten Berge, H.F.M.; Hijbeek, R.; van Loon, M.P.; Rurinda, J.; Tesfaye, K.; Zingore, S.; Craufurd, P.; van Heerwaarden, J.; Brentrup, F.; Schröder, J.J.; Boogaard, H.L.; de Groot, H.L.E.; van Ittersum, M.K.

In: Global Food Security, Vol. 23, 12.2019, p. 9-21.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Maize crop nutrient input requirements for food security in sub-Saharan Africa

AU - ten Berge, H.F.M.

AU - Hijbeek, R.

AU - van Loon, M.P.

AU - Rurinda, J.

AU - Tesfaye, K.

AU - Zingore, S.

AU - Craufurd, P.

AU - van Heerwaarden, J.

AU - Brentrup, F.

AU - Schröder, J.J.

AU - Boogaard, H.L.

AU - de Groot, H.L.E.

AU - van Ittersum, M.K.

PY - 2019/12

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AB - 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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KW - Intensification

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KW - Zea mays

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