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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 17/09/2026

Firm turnover under asymmetric information: Tanzania's agro‐dealer sector - A new article in the American Journal of Agricultural Economics onlinelibrary.wiley.com/doi/full/10…

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 17/09/2026

Evaluating optimal farm management of phosphorus fertilizer inputs with partial observability of legacy soil stocks - A new article in the American Journal of Agricultural Economics onlinelibrary.wiley.com/doi/abs/10.…

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 17/09/2026

The causal effect of agricultural landscape simplification on Germany's grasslands during a compound drought and heatwave in 2018 - a new article in the American Journal of Agricultural Economics onlinelibrary.wiley.com/doi/full/10…

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 16/07/2026

Not just a random forest: Using Bayesian additive regression trees to estimate willingness to pay to protect critical habitat onlinelibrary.wiley.com/doi/abs/10.1002/ajae.70084 A new article in the American Journal of Agricultural Economics.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 25/06/2026

When e-commerce meets smallholders: Boosting incomes and widening gaps in rural China's anti-poverty policy onlinelibrary.wiley.com/doi/abs/10.1002/ajae.70086 A new article in the American Journal of Agricultural Economics.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 25/06/2026

School feeding, maternal empowerment, and household consumption onlinelibrary.wiley.com/doi/abs/10.1002/ajae.70085 A new article in the American Journal of Agricultural Economics.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 18/06/2026

The role of venture-financed startups in innovation for US agriculture onlinelibrary.wiley.com/doi/full/10.1002/ajae.70083 A new article in the American Journal of Agricultural Economics.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 14/05/2026

Preferential trading in agriculture: New insights from a structural gravity analysis and machine learning onlinelibrary.wiley.com/doi/abs/10.1002/ajae.70077 A new article in @AJAE-aaea

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 14/05/2026

An economic approach to mitigating spillover bias in synthetic control methods: An application to the price effects of fishing quotas onlinelibrary.wiley.com/doi/abs/10.1002/ajae.70079 A new article in the @AJAE-aaea.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 14/05/2026

Contingent behavior modeling for dark skies valuation at Great Sand Dunes National Park onlinelibrary.wiley.com/doi/abs/10.1002/ajae.70080 A new article in the @AJAE-aaea.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 14/05/2026

Irrigation investments and agricultural productivity in Northern China onlinelibrary.wiley.com/doi/abs/10.1002/ajae.70072 A new article in the @AJAE-aaea.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 24/04/2026

Temperature Sensitivity and Adaptation of Cereal Yields: Empirical Evidence From Italy onlinelibrary.wiley.com/doi/full/10.1002/aepp.70070 A new article in Applied Economic Perspectives and Policy.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 16/04/2026

Food insecurity and unemployment among immigrants in the United States onlinelibrary.wiley.com/doi/full/10.1002/ajae.70071 A new article in the American Journal of Agricultural Economics.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 09/04/2026

Accounting for animal health in efficiency analysis: An application to Swedish dairy onlinelibrary.wiley.com/doi/full/10… A new article in the American Journal of Agricultural Economics.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

Aggregate pass-through remains stable (0.086), but its composition shifts. Pass-through has declined among import-dependent firms and risen among less import-dependent firms, indicating evolving inflation channels and growing pressure from strategic pricing.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

Markup responses differ by type. Large, import-dependent firms compress margins when import prices rise, while many non-large or less import-dependent firms raise markups in response to the imported crop price increase, amplifying inflation.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

We find that market power is substantial (average markup is about 1.21) and increasingly polarized; median markups are stable while the upper tail rises. High-markup firms are pulling away, reshaping pricing power within the food industry.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

We draw on firm financial data covering 10,911 South Korean food manufacturers from 2000–2021, accounting for 81% of sector sales. Korea is a classic small open economy: heavily reliant on grain imports with negligible market power in global crop markets.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

To take this to data, we combine a Leontief production structure with firm-level markup estimation. Firm-level pass-through elasticity becomes a function of estimated markup responses, firm markups, material shares, and import-crop dependence.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

We build a theory that shows cost pass-through depends on (i) reliance on imported crops and (ii) demand curvature under imperfect competition. Strategic interaction implies an indirect channel: firms not exposed to the cost shock can still raise markups.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

In a small open economy, import crop prices are taken as given. However, the resulting inflation manifests in very different patterns across sectors and firm types, because firms change markups strategically when costs (theirs or rivals’) move.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

Trade tensions and supply disruptions keep global crop prices highly uncertain. In import-dependent small open economies, the key question is: how much of an agricultural import price shock shows up as food inflation, and through which pricing channel?

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

Our study contributes by establishing land-grant railroads as an exogenous instrument for public lands and by providing a framework to evaluate the welfare effects of proposed land exchanges and other changes in land ownership or management.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

Welfare calculations indicate that the annual urban household willingness to pay for a one percent increase in public land ranges from $80.58 to $130.29.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

Using GIS and Census data for U.S. urban areas and instruments rooted in 19th-century land disposal policies, we estimate how federal and state public lands contribute to urban quality of life.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

Public lands remain understudied in the urban quality-of-life literature. Prior studies use geographic units that are too small to capture relevant land, define public lands too narrowly, and rarely address endogeneity when quasi-experimental designs are infeasible.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

Federal and state-owned public lands occupy a significant share of many U.S. urban regions and contribute to two highly-valued nontradable goods: viewscapes and outdoor recreational opportunities.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 08/03/2026

New AJAE paper: "Public lands and urban quality of life," by Sherzod B. Akhundjanov, Paul M. Jakus, doi.org/10.1002/ajae...

doi.org

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

The findings highlight the need for a holistic and systemic view of policy.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

Ecologically relevant impacts are documented: biogas promotion incentivizes maize-based crop rotations, thereby reducing local crop diversity and, most likely, biodiversity. Ecological compensation areas, compulsory for wind turbines, cannot counteract the trend.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

In sum, the authors attribute 9% of the observed increase in land prices over the study period to renewable energy expansion.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

Indirect land price channels emerge from an altered farm structure, e.g., number and size of farms, through biogas promotion – an effect underestimated in previous studies.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

Land transaction and land-use data from Brandenburg, 2005–2018, reveal direct and indirect effects on farmland prices: in proximity to wind turbines and biogas plants, higher economic rents are possible and translate into a higher willingness to pay.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

By imposing a logical temporal structure, we exploit regional and temporal variation in renewable energy expansion. The SEM offers causal channels for direct and indirect impacts.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

The authors convey a systemic policy evaluation approach that explicitly distinguishes direct and indirect policy impact channels using a theory-informed structural equation model (SEM).

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

Germany’s Renewable Energy Sources Act (REA) substantially fostered biogas and wind expansion but fixed feed-in tariffs capitalize into farmland values, and have ecologically relevant impacts on the farmland mosaic of fields in a region.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

New AJAE paper: "Uncovering renewable energy policy impact channels on land values, the local farm structure, and farmland heterogeneity," by Lars Isenhardt, Stefan Seifert, Saskia Wolff, Tobia Lakes, Marten Graubner, Axel Werwatz, Silke Hüttel, onlinelibrary.wiley.com/doi/10.1002/...

onlinelibrary.wiley.com

Uncovering renewable energy policy impact channels on land values, the local farm structure, and farmland heterogeneity

Germany's Renewable Energy Sources Act (REA), enacted in 2000 and subsequently amended, subsidized national renewable energy production with fixed feed-in tariffs for renewable energy sources (RE) fr...

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

The results highlight the importance of crop-specific policy design and institutional arrangements when reforming seed systems in developing countries transitioning from state-managed to market-led systems.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

The crop-specific effects likely reflect differences in reproductive biology and market incentives. Hybrid maize generates recurring demand and stronger commercial incentives than self-pollinating wheat.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

In contrast, we find no statistically significant effects of DSM on wheat seed purchases or wheat yields.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

These changes translated into an 18 percent increase in maize yields, suggesting that institutional reforms in seed markets can generate substantial productivity gains.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

We find that DSM increased the share of farmers purchasing fresh maize seed by 15 percentage points and raised the quantity of maize seed purchased per hectare by 45 percent.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

The study provides a rigorous evaluation of DSM using farm-level data and a quasi-experimental difference-in-differences framework that accounts for staggered treatment timing.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

Since 2011, Ethiopia has implemented a major institutional reform—the Direct Seed Marketing (DSM) approach—allowing firms to sell seed directly to farmers instead of through the state’s rural administrative system. DSM expanded to 290 districts by 2019.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

These constraints reflect classical market failures in seed markets. Historically, governments have responded by allocating public resources to varietal improvement and centralized seed distribution systems.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

A key supply-side constraint behind low adoption of improved seed varieties among smallholders in Sub-Saharan Africa is the limited availability of quality seed—in the volume, price, and timeliness that farmers require.

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American Journal of Agricultural Economics @ajae-aaea.bsky.social · 05/03/2026

New AJAE paper: “Seeds of Change: The Impact of Ethiopia’s Direct Seed Marketing Approach on Smallholders’ Seed Purchases and Productivity.” By Dawit Mekonnen, Gashaw T. Abate, Seid Yimam, Rui Benfica, David J. Spielman, Frank Place, doi.org/10.1002/ajae...

doi.org

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