Prospect for increasing grain legume crop production in East Africa

Marloes P. van Loon, Nanyan Deng, Patricio Grassini, Juan I. Rattalino Edreira, Endalkachew Wolde-meskel, Frederick Baijukya, Hélène Marrou, Martin K. van Ittersum

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Agricultural production in East Africa (E-Afr) has to increase drastically to meet future food demand. Yield gap assessment provides important information on the degree to which production can be increased on existing cropland. Most research on yield gap analysis has focussed on cereal crops, while legumes have received less attention despite of their relatively large area, and their importance as source of protein in smallholder farming systems in E-Afr. The objectives of this study were to (i) estimate water-limited yield potential (Yw) and yield gaps (Yg) for major grain legume crops in E-Afr, and (ii) estimate how narrowing the current legume Yg can contribute to food self-sufficiency by the year 2050. We focussed on Ethiopia, Kenya, and Tanzania, and five legumes crops including chickpea, common bean, cowpea, groundnut, and pigeonpea. A bottom-up approach which entails that local weather, soil and agronomic data was used as input for crop modelling (SSM-legumes) in a spatial framework, to estimate Yw, actual on-farm yield (Ya), and Yg from local to regional scale. Future legume self-sufficiency was assessed for 2050 demand assuming different Yg closure scenarios. On average, Ya was 25% of Yw across all legume-county combinations, being 15% for Kenya, 23% for Tanzania and 41% for Ethiopia. On average, common bean had the largest Yg of 2.6 Mg ha−1and chickpea the smallest (1.4 Mg ha−1). Closure of the exploitable Yg (i.e., 80% of Yw) can help to meet future legume demand in both Kenya and Tanzania, while it seems not to be sufficient in Ethiopia.

LanguageEnglish
Pages140-148
JournalEuropean Journal of Agronomy
Volume101
DOIs
Publication statusPublished - 1 Nov 2018

Fingerprint

Eastern Africa
crop production
legumes
Tanzania
Ethiopia
Kenya
crop
self sufficiency
beans
crops
East Africa
bottom-up approach
groundnut
small-scale farming
water yield
food
smallholder
farming system
agricultural production
cereal

Keywords

  • Chickpea
  • Common bean
  • Cowpea
  • Food self-sufficiency
  • Groundnut
  • Legumes
  • Pigeonpea
  • Sub-Saharan Africa
  • Yield gap
  • Yield potential

Cite this

van Loon, Marloes P. ; Deng, Nanyan ; Grassini, Patricio ; Rattalino Edreira, Juan I. ; Wolde-meskel, Endalkachew ; Baijukya, Frederick ; Marrou, Hélène ; van Ittersum, Martin K. / Prospect for increasing grain legume crop production in East Africa. In: European Journal of Agronomy. 2018 ; Vol. 101. pp. 140-148.
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van Loon, MP, Deng, N, Grassini, P, Rattalino Edreira, JI, Wolde-meskel, E, Baijukya, F, Marrou, H & van Ittersum, MK 2018, 'Prospect for increasing grain legume crop production in East Africa', European Journal of Agronomy, vol. 101, pp. 140-148. https://doi.org/10.1016/j.eja.2018.09.004

Prospect for increasing grain legume crop production in East Africa. / van Loon, Marloes P.; Deng, Nanyan; Grassini, Patricio; Rattalino Edreira, Juan I.; Wolde-meskel, Endalkachew; Baijukya, Frederick; Marrou, Hélène; van Ittersum, Martin K.

In: European Journal of Agronomy, Vol. 101, 01.11.2018, p. 140-148.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - van Loon, Marloes P.

AU - Deng, Nanyan

AU - Grassini, Patricio

AU - Rattalino Edreira, Juan I.

AU - Wolde-meskel, Endalkachew

AU - Baijukya, Frederick

AU - Marrou, Hélène

AU - van Ittersum, Martin K.

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AB - Agricultural production in East Africa (E-Afr) has to increase drastically to meet future food demand. Yield gap assessment provides important information on the degree to which production can be increased on existing cropland. Most research on yield gap analysis has focussed on cereal crops, while legumes have received less attention despite of their relatively large area, and their importance as source of protein in smallholder farming systems in E-Afr. The objectives of this study were to (i) estimate water-limited yield potential (Yw) and yield gaps (Yg) for major grain legume crops in E-Afr, and (ii) estimate how narrowing the current legume Yg can contribute to food self-sufficiency by the year 2050. We focussed on Ethiopia, Kenya, and Tanzania, and five legumes crops including chickpea, common bean, cowpea, groundnut, and pigeonpea. A bottom-up approach which entails that local weather, soil and agronomic data was used as input for crop modelling (SSM-legumes) in a spatial framework, to estimate Yw, actual on-farm yield (Ya), and Yg from local to regional scale. Future legume self-sufficiency was assessed for 2050 demand assuming different Yg closure scenarios. On average, Ya was 25% of Yw across all legume-county combinations, being 15% for Kenya, 23% for Tanzania and 41% for Ethiopia. On average, common bean had the largest Yg of 2.6 Mg ha−1and chickpea the smallest (1.4 Mg ha−1). Closure of the exploitable Yg (i.e., 80% of Yw) can help to meet future legume demand in both Kenya and Tanzania, while it seems not to be sufficient in Ethiopia.

KW - Chickpea

KW - Common bean

KW - Cowpea

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KW - Pigeonpea

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van Loon MP, Deng N, Grassini P, Rattalino Edreira JI, Wolde-meskel E, Baijukya F et al. Prospect for increasing grain legume crop production in East Africa. European Journal of Agronomy. 2018 Nov 1;101:140-148. https://doi.org/10.1016/j.eja.2018.09.004