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With research staff from more than 60 countries, and offices across the globe, IFPRI provides research-based policy solutions to sustainably reduce poverty and end hunger and malnutrition in developing countries.

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Elodie Becquey

Elodie Becquey is a Senior Research Fellow in the Nutrition, Diets, and Health Unit, based in IFPRI’s West and Central Africa office in Senegal. She has over 15 years of research experience in diet, nutrition, and food security in Africa, including countries such as Burkina Faso, Chad, Ethiopia, Ghana, Kenya, Mali, and Tanzania.

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Development Strategies and Governance

Opeyemi Olanrewaju

Research Analyst

Bio

Opeyemi Olanrewaju is a Research Analyst in the Development Strategies and Governance Unit, based in Abuja. He currently supports IFPRI’s Nigeria Strategy Support Program (NSSP). Opeyemi’s research interests focus on youth employment, technology adoption, agricultural finance, conflict and insecurity, and food security. He seeks to contribute to policy discussions on sustainable rural livelihoods, rural digital technology adoption, and food security.

Prior to joining IFPRI, Opeyemi worked as a Field Research Lead at with Coamana Ltd, Abuja and coordinated several field research projects in Northern Nigeria where he undertook several works on Agricultural Value chain assessment and analysis. He was also a Research Fellow of the International Institute of Tropical Agriculture (IITA)/International Fund for Agricultural Development (IFAD) and worked on generating evidence on Youth Engagement in Agribusiness and Rural Economic activities in Africa.

Opeyemi Olanrewaju received his master’s in Agricultural Economics from University of Ibadan and a bachelor’s in Agricultural Economics and Extension from Ladoke Akintola University of Technology.

Nigeria Strategy Support Program

Development Strategies and Governance

Publications

Resource thumbnail

Working Paper

Conflict and agricultural inputs: Impacts on maize yields in Nigeria

2025Amare, Mulubrhan; Andam, Kwaw S.; Balana, Bedru; Olanrewaju, Opeyemi; Omamo, Steven Were
Details

Conflict and agricultural inputs: Impacts on maize yields in Nigeria

While standard agronomic recommendations advocate for increased application of inorganic fertilizer to boost maize yields across sub-Saharan Africa, there is limited understanding of how violent conflict influences smallholder farmers’ fertilizer demand, yield responses, and the overall profitability of fertilizer use. This study addresses this gap by analyzing how exposure to conflict affects input use decisions and the economic returns to fertilizer among maize farmers in Nigeria. Using detailed household-level data and spatially referenced conflict events, we estimate maize yield response functions with respect to nitrogen application and assess the profitability of fertilizer under varying levels of conflict exposure. Our findings reveal three key results. First, the marginal physical product (MPP) of nitrogen is low across the study sample, indicating limited agronomic responsiveness. Second, conflict exposure significantly reduces the likelihood and intensity of fertilizer use, suggesting that insecurity constrains both input access and willingness to invest. Third, conflict lowers the MPP of nitrogen even further, thereby reducing the marginal value-cost ratio (MVCR) and undermining the profitability of fertilizer use. These results highlight the importance of considering conflict as a key external factor that distorts input-output relationships in agricultural production. Insecurity not only affects access to inputs through higher prices and disrupted supply chains, but also alters expected returns, making fertilizer investments less attractive for risk-averse farmers. Recognizing the effects of conflict on fertilizer use and yield response is essential for designing more effective input subsidy programs, targeting strategies, and resilience-building interventions in fragile agricultural systems.

Year published

2025

Authors

Amare, Mulubrhan; Andam, Kwaw S.; Balana, Bedru; Olanrewaju, Opeyemi; Omamo, Steven Were

Citation

Amare, Mulubrhan; Andam, Kwaw S.; Balana, Bedru; Olanrewaju, Opeyemi; and Omamo, Steven Were. 2025. Conflict and agricultural inputs: Impacts on maize yields in Nigeria. IFPRI Discussion Paper 2378. Washington, DC: International Food Policy Research Institute. https://hdl.handle.net/10568/178034

Country/Region

Nigeria

Keywords

Africa; Sub-saharan Africa; Western Africa; Conflicts; Farm Inputs; Maize; Crop Yield; Fertilizer Application; Yield Response Factor

Language

English

Access/Licence

Open Access

Source

Source record

Project

National Policies and Strategies

Record type

Working Paper

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Journal Article

Impact of conflict shocks on land rental market dynamics: Panel evidence from Nigeria

2025Olanrewaju, Opeyemi; Bamiwuye, Temilolu; Omotayo, Abiodun Olusola
Details

Impact of conflict shocks on land rental market dynamics: Panel evidence from Nigeria

Access to land is crucial for transforming agri-food systems, promoting market integration, and reducing poverty in sub-Saharan Africa (SSA), where rural land markets are increasingly expanding. However, the escalation of violent conflicts presents serious obstacles to the effective functioning of these land rental markets and their contribution to development objectives. The study employs a household-level panel fixed effects regression model to analyze the impact of violent conflicts and institutional factors on land rental market dynamics, using georeferenced LSMS-ISA and ACLED data. Findings show that conflicts significantly reduce land rental sizes, especially for rural smallholder farmers. Additionally, the study found that institutional factors change how conflict affects land rental markets. The heterogeneous effects revealed that institutional factors reverse the impact of conflict on land rental sizes and values. Specifically, when smallholder women participate in agricultural decision-making in rural areas or when large-scale farming households have access to credit, the typically adverse effect of conflict on land markets transforms into a positive one. Thus, women’s participation in agricultural decision-making and access to formal credit play a crucial role in shaping households’ ability to navigate land rental markets in conflict-affected areas. Policymakers can leverage this evidence to develop strategies that improve land access and stability in conflict-prone regions. By understanding household and market dynamics, policymakers can design more effective strategies to promote conflict-sensitive and sustainable agricultural systems and economic stability in Nigeria and other conflict-prone regions.

Year published

2025

Authors

Olanrewaju, Opeyemi; Bamiwuye, Temilolu; Omotayo, Abiodun Olusola

Citation

Olanrewaju, Opeyemi; Bamiwuye, Temilolu; and Omotayo, Abiodun Olusola. 2025. Impact of conflict shocks on land rental market dynamics: Panel evidence from Nigeria. Land Use Policy 158(November 2025): 107748. https://doi.org/10.1016/j.landusepol.2025.107748

Country/Region

Nigeria

Keywords

Africa; Western Africa; Sub-saharan Africa; Agricultural Productivity; Decision Making; Land Use; Sustainability

Language

English

Access/Licence

Open AccessCC-BY-NC-ND-4.0

Links

https://doi.org/10.1016/j.landusepol.2025.107748 Source record

Record type

Journal Article

Resource thumbnail

Brief

Credit access, demand, and repayment among smallholder farmers in Nigeria: A follow-up analysis

2025Ambler, Kate; Balana, Bedru; Bloem, Jeffrey R.; Maruyama, Eduardo; Olanrewaju, Opeyemi
Details

Credit access, demand, and repayment among smallholder farmers in Nigeria: A follow-up analysis

Access to credit can be important for improving the performance of smallholders, as it enables farmers to purchase inputs while sustaining their livelihoods. In rural Nigeria, however, access to credit—particularly from formal financial institutions—is limited. As a result, farmers often have little to no choice but to depend on alternative credit sources, including informal lending. Small holder agricultural households often turn to friends and family, or local money lenders and other informal and semi-formal sources to meet their credit needs (EFInA, 2020).

Year published

2025

Authors

Ambler, Kate; Balana, Bedru; Bloem, Jeffrey R.; Maruyama, Eduardo; Olanrewaju, Opeyemi

Citation

Ambler, Kate; Balana, Bedru; Bloem, Jeffrey R.; Maruyama, Eduardo; and Olanrewaju, Opeyemi. 2025. Credit access, demand, and repayment among smallholder farmers in Nigeria: A follow-up analysis. IFPRI Project Note July 2025. Washington, DC: International Food Policy Research Institute. https://hdl.handle.net/10568/175654

Country/Region

Nigeria

Keywords

Africa; Western Africa; Sub-saharan Africa; Access to Finance; Credit; Smallholders; Inputs; Repayment of Debts

Language

English

Access/Licence

Open Access

Source

Source record

Record type

Brief