Research area

Agricultural Economics

Golden wheat fields with trees under an open sky.

Agricultural and environmental economics examine how households, firms, and governments make decisions about land, natural resources, food systems, and rural development. Agriculture remains central to livelihoods, poverty reduction, climate adaptation, and environmental sustainability, particularly in low- and middle-income countries. At the same time, land degradation, water scarcity, insecure property rights, and climate shocks continue to shape productivity and long-term welfare.

This research agenda studies how institutions, incentives, and environmental conditions affect agricultural investment, conservation, and rural development.

Team

Current Projects

Land Tenure and Soil Conservation in Peru: Evidence from Double/Debiased Machine Learning

Farmers often make long-term investments in soil conservation only when they feel secure about their land and future livelihoods. This project examines whether land ownership and formal land titles encourage farmers in Peru to adopt conservation practices that protect soil quality and improve the sustainability of agricultural production. Using nationwide agricultural census data, the research studies practices such as intercropping, organic fertilizer use, and traditional conservation infrastructure including andenes and terraces. The project also explores how geography, local institutions, and environmental conditions shape conservation decisions across different regions of Peru.

UP Researchers: Esteban Colla‐De‐Robertis and Akito Kamei
with Sandro Navarro-Castañeda (Universidad de Piura)

Presentation at Asociación Peruana de Economía (APE) in 2026.

Seedlings growing in soil.

Journal Publications

Based on a survey of 243 soybean farmers in Paraná, Brazil, this study examines factors associated with self-reported harvest losses. It focuses on the principal–agent relationship between farmers and combine operators: operators may have incentives to finish jobs quickly, while slower operation and proper machine adjustment can reduce losses. Farmers identify operator training as an important factor. Reported harvest loss is 1.5 percentage points higher when a third party harvests the crop than when farmers harvest themselves. Higher farmer education is associated with lower loss, while larger planted areas are associated with greater loss. The findings indicate that the identity and incentives of the person harvesting matter and suggest that training, contracts, and other arrangements aligning operator and farmer incentives could help limit losses.

UP researcher: Akito Kamei
with Mary Arends-Kuenning, Marcos Garcias, Pery Francisco Assis Shikida, Gisele Esser Romani

Food Policy · 2022

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Using survey interviews with 205 soybean farmers in Western Paraná, Brazil, this study investigates which household and farm characteristics are associated with plans to transfer a farm to the next generation. About 64% of respondents expected to pass on their business. Traditional gender norms shape those plans: households without sons were substantially less likely to expect succession, while larger farms were more likely to have a family successor. Farmers with college education were less likely to plan a transfer to their children, and participation in subsidized-credit programs aimed at smallholders was associated with a greater likelihood of succession. The findings suggest that credit programs and succession planning may help sustain family agriculture, while gendered expectations and declining fertility pose challenges.

UP researcher: Akito Kamei
with Mary Arends-Kuenning, Marcos Garcias, Gisele Esser Romani, Pery Francisco Assis Shikida

Land Use Policy · 2021

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This study examines the relationship between land-tenure security and nine types of agricultural investment in Peru’s Highlands, using agricultural census data and a simultaneous-equations approach to account for the possibility that tenure security and investment affect one another. Tenure security is positively associated with five investment types, although the estimated effects are smaller than the institutional argument for titling might suggest. For two investments, the estimated relationship is negative, consistent with customary practices serving as effective forms of land management. The findings suggest that land-titling programs can support rural development, but are not sufficient on their own and should complement functioning local institutions. Education, training, and gender equality also matter for rural development.

UP researcher: Esteban Colla De Robertis
with Sandro Navarro-Castañeda, José M. Arranz, Mercedes Burguillo

Land Use Policy · 2021

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