Inorganic fertilizer use and its association with rice yield gaps in sub-Saharan Africa
Date Issued
Date Online
Language
Type
Review Status
Access Rights
Metadata
Full item pageCitation
Johnson, J.M., Ibrahim, A., Dossou-Yovo, E., Senthilkumar, K., Tsujimoto, Y., Asai, H. and Saito, K. 2023. Inorganic fertilizer use and its association with rice yield gaps in sub-Saharan Africa. Global Food Security 38:100708.
Permanent link to cite or share this item
External link to download this item
Abstract/Description
Where and which countries should receive higher priority for improving inorganic fertilizer use in rice fields in sub-Saharan Africa (SSA)? This study addressed this question by assessing the spatial variation in fertilizer use and its association with rice yield and yield gap in 24 SSA countries through a systematic literature review of peer-reviewed papers, theses, and grey literature published between 1995 and 2021. The results showed a large variation in N, P, and K fertilizer application rates and rice yield and an opportunity for narrowing the yield gap by increasing N and P rates, especially in irrigated rice systems. We identified clusters of sites/countries based on nutrient input and yield and suggested research and development strategies for improving yields and optimizing nutrient use efficiencies. Further research is essential to identify the factors causing low fertilizer use and the poor association between its use and yield in rainfed systems.
Author ORCID identifiers
Ali Ibrahim https://orcid.org/0000-0002-8454-0551
Elliott Dossou-Yovo https://orcid.org/0000-0002-3565-8879
Kalimuthu Senthilkumar https://orcid.org/0000-0002-2862-411X
Kazuki Saito https://orcid.org/0000-0002-8609-2713