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With research staff from more than 70 countries, and offices across the globe, IFPRI provides research-based policy solutions to sustainably reduce poverty and end hunger and malnutrition in developing countries.

researcher spotlight

David Spielman

David Spielman is the director of IFPRI’s Innovation Policy and Scaling Unit and has been with the institute since 2004. His research agenda covers a range of topics including agriculture and rural development policy; agricultural science, technology, and innovation; plant genetic resources and seed systems; agricultural extension and advisory services; and community-driven rural development.

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Since 1975, IFPRI’s research has been informing policies and development programs to improve food security, nutrition, and livelihoods around the world.

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Markets, Trade, and Institutions

Carly Trachtman

Research Fellow

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Bio

Carly Trachtman is a Research Fellow in the Markets, Trade, and Institutions Unit at IFPRI. Carly’s research focuses on topics such as social protection program targeting, agricultural value chains, and technology adoption. She has methodological interests in issues related to welfare measurement and experimental design. Carly received her PhD in Agricultural and Resource Economics from UC Berkeley. She also holds an MS in Agricultural and Resource Economics from UC Berkeley and a BA in Economics and Mathematics from Lafayette College.

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Publications

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Journal Article

How much do our neighbors really know? The limits of community-based targeting

2026Trachtman, Carly; Permana, Yudistira Hendra; Sahadewo, Gumilang Aryo
Details

How much do our neighbors really know? The limits of community-based targeting

Social assistance programs in developing countries often rely on local community members to identify potential beneficiaries. As community members may observe neighbors’ welfare, their reports may capture transitory shocks better than the proxies typically observable by a centralized policy implementer. To test this, we conduct a lab-style experiment in Central Java, in which participants rank other community members’ welfare, using benchmarks that vary in sensitivity to transitory shocks, and target small cash transfers. We find little evidence that community-held welfare information better reflects transitory shocks and find that targeting decisions mostly depend on perceived differences in overall wealth. JEL Codes: O12, I32, D83

Year published

2026

Authors

Trachtman, Carly; Permana, Yudistira Hendra; Sahadewo, Gumilang Aryo

Citation

Trachtman, Carly; Permana, Yudistira Hendra; and Sahadewo, Gumilang Aryo. 2025. How much do our neighbors really know? The limits of community-based targeting. Journal of Development Economics 178(January 2026): 103555. https://doi.org/10.1016/j.jdeveco.2025.103555

Country/Region

Indonesia

Keywords

Asia; South-eastern Asia; Oceania; Community Development; Policy Innovation; Poverty; Targeting

Language

English

Access/Licence

Open AccessCC-BY-4.0

Links

https://doi.org/10.1016/j.jdeveco.2025.103555 Source record

Record type

Journal Article

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Working Paper

Targeting of beneficiaries in chemical fertilizer subsidy programs: State of knowledge and evidence gaps

2025Trachtman, Carly; Hill, Ruth Vargas
Details

Targeting of beneficiaries in chemical fertilizer subsidy programs: State of knowledge and evidence gaps

Low and middle income countries have been facing mounting pressure from lenders and donors to eliminate or reform fertilizer subsidy programs, which can have distortionary market effects and negative environmental externalities. However, there is little systematic work understanding who these programs currently benefit both in theory and in practice, and hence who may be affected by policy reform. In this paper, we identify low and middle countries with active fertilizer subsidy programs, and characterize the targeting regime of each program based on both explicit and implicit criteria determining eligibility. Then in a selection of case studies, we explore which individuals are receiving subsidy benefits in practice. We find that while many fertilizer subsidy programs are meant to be universal, there are are additional implicit targeting criteria and/or informal targeting induced by supply shortfalls in many countries. Further, we find evidence that regardless of targeting regime, fertilizer subsidies are generally progressive, though this seems to be driven by the fact that the poor are often concentrated in the agricultural sector.

Year published

2025

Authors

Trachtman, Carly; Hill, Ruth Vargas

Citation

Trachtman, Carly; Hill, Ruth. 2025. Targeting of beneficiaries in chemical fertilizer subsidy programs: State of knowledge and evidence gaps. Washington, DC: International Food Policy Research Institute. https://hdl.handle.net/10568/178957

Keywords

Fertilizers; Inorganic Fertilizers; Subsidies; Targeting

Language

English

Access/Licence

Open Access

Source

Source record

Record type

Working Paper

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Working Paper

Production and consumption traits and the adoption of improved maize varieties: Evidence from seed sample packs and cooking demonstrations

2025Van Campenhout, Bjorn; Nabwire, Leocardia; Kramer, Berber; Trachtman, Carly; Abate, Gashaw T.
Details

Production and consumption traits and the adoption of improved maize varieties: Evidence from seed sample packs and cooking demonstrations

In developing countries, semi-subsistence farmers typically assume dual roles as both consumers and producers of the same crops, which shape their adoption decisions as they balance household food security with market-driven incentives. This study, conducted in eastern Uganda, employs a field experiment with two intervention arms to assess the relative importance of these factors in farmers’ decisions to adopt improved maize seed varieties. The first intervention focuses on production traits, distributing free sample packs of an improved hybrid maize variety to showcase benefits such as higher yields, pest resistance, and drought tolerance. The second intervention emphasizes consumption traits, offering cooking demonstrations and blind taste tests using flour from the same improved maize variety to highlight its taste, texture, and ease of preparation. Our findings reveal that while seed sample packs positively influenced farmers’ perceptions of both production and consumption traits, cooking demonstrations primarily affected perceptions of consumption qualities. We find some evidence that the cooking demonstrations and tasting sessions significantly boosted adoption of the improved maize seed variety promoted by the intervention. However, farmers who received seed sample packs tended to recycle the harvested grain as seed in subsequent seasons, thereby crowding out fresh seed purchases. This practice led to productivity losses, suggesting that the seed trial packs did not translate into lasting improvements in food security or increased market participation.

Year published

2025

Authors

Van Campenhout, Bjorn; Nabwire, Leocardia; Kramer, Berber; Trachtman, Carly; Abate, Gashaw T.

Citation

Van Campenhout, Bjorn; Nabwire, Leocardia; Kramer, Berber; Trachtman, Carly; and Abate, Gashaw T. 2025. Production and consumption traits and the adoption of improved maize varieties: Evidence from seed sample packs and cooking demonstrations. IFPRI Discussion Paper 2331. Washington, DC: International Food Policy Research Institute. https://hdl.handle.net/10568/173943

Country/Region

Uganda

Keywords

Africa; Eastern Africa; Sub-saharan Africa; Technology Adoption; Consumption; Cooking; Maize

Language

English

Access/Licence

Open Access

Source

Source record

Project

Seed Equal

Record type

Working Paper

Blogs

Workshop: Assessing on-the-ground impacts of genetic innovation in agriculture
Event Post
 | 
January 15, 2025

Workshop: Assessing on-the-ground impacts of genetic innovation in agriculture

By Emily Kilonzi, Berber Kramer, and Carly Trachtman

A coordinated multi-country approach.

How we used coordinated trials and meta-analysis to evaluate interventions to increase varietal turnover
Research Post
 | 
December 19, 2024

How we used coordinated trials and meta-analysis to evaluate interventions to increase varietal turnover

By Berber Kramer, Carly Trachtman, and Witold Więcek

Assessing impacts of a multi-country project.

Events

2025 Gender Conference: Accelerating Equality in Food, Land, and Water Systems
IFPRI at External Event

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October 7 to 9, 2025

2025 Gender Conference: Accelerating Equality in Food, Land, and Water Systems

Join the CGIAR Accelerator Gender Equality & Inclusion, in collaboration with the International Water Management Institute (IWMI) and the Western Cape Government, in Cape Town for the 2025 Gender Conference, a pivotal gathering at the intersection of gender equality and sustainable development. This year’s theme, “Accelerating Equality in Food, Land, and Water Systems,” highlights the urgent need […]

2025 Agricultural & Applied Economics Association (AAEA) Annual Meeting
IFPRI at External Event

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July 27 to 29, 2025

2025 Agricultural & Applied Economics Association (AAEA) Annual Meeting

IFPRI is participating in the 2025 Agricultural & Applied Economics Association (AAEA) Annual Meeting on July 27– July 29, 2025. The Agricultural & Applied Economics Association (AAEA) is a not-for-profit association serving the professional interests of members working in agricultural and broadly related fields of applied economics. AAEA members are primarily employed by academic departments […]

2023 Agricultural & Applied Economics Association (AAEA) Annual Meeting
IFPRI at External Event

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July 23 to 25, 2023

2023 Agricultural & Applied Economics Association (AAEA) Annual Meeting

Event: July 23, 2023 – 8:30 AM to July 25, 2023 – 4:15 PM EDT. IFPRI is participating in the 2023 Agricultural & Applied Economics Association (AAEA) Annual Meeting.

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