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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.

Timothy Thomas

Timothy Thomas is a Senior Research Fellow in the Foresight and Policy Modeling Unit. His research focuses on the impact of climate change on agricultural productivity. Tim’s work involves developing innovative methods for simulated climate futures and model coordination between climate, crop, water, energy, and economics.

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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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IFPRI currently has more than 480 employees working in over 70 countries with a wide range of local, national, and international partners.

How a fertilizer shortage caused by the Iran war could affect U.S. food prices (NPR)

July 03, 2026


NPR interviewed IFPRI Senior Research Fellow Rob Vos for a Morning Edition segment on how fertilizer shortages resulting from the Iran war could affect U.S. food prices.

While higher fertilizer costs could lead to smaller harvests and modest increases in retail food prices, farmers are likely to bear most of the burden because they have limited bargaining power. As Vos explained, farmers don’t have much bargaining power to negotiate with wholesalers for higher crop prices when their operating costs rise, “Those buyers will go to other farmers to try and get it cheaper.”

Speaking about when fertilizer sector could returns to normal, Vos estimated that “it could take weeks or months for fertilizer manufacturing plants to come back online and return to previous production levels. If high prices stick around, that could snarl the plans of U.S. farmers preparing to plant cool-season crops this autumn, he added.”

Listen to the episode and read full summary on NPR