Iran & the Strait of Hormuz: A Fertilizer Shock Threatening Global Food Security
The escalating conflict involving Iran is already sending ripples through global energy markets, but a less-discussed consequence could prove equally destabilizing: a potential shock to the world’s fertilizer supply. As tensions rise and the possibility of disruptions to shipping through the Strait of Hormuz looms, experts are warning that access to crucial crop nutrients could be severely curtailed, with far-reaching implications for global food security.
Beyond Oil: The Fertilizer Connection
The Strait of Hormuz, a narrow waterway connecting the Persian Gulf with the Gulf of Oman and the Arabian Sea, is one of the world’s most essential shipping lanes. While much of the immediate concern centers on oil and gas flows, a significant portion of the world’s fertilizer – and the components needed to produce it – also transits this critical chokepoint. Approximately one-third of globally traded urea, a widely used nitrogen fertilizer, passes through the strait according to Kpler. This dependence stems from the region’s access to inexpensive natural gas, a key ingredient in ammonia production, and the concentration of ammonia and urea production capacity in countries like Qatar, Saudi Arabia, and the United Arab Emirates.
Modern agriculture is heavily reliant on synthetic nitrogen fertilizers. The Haber-Bosch process, developed in the early 20th century by Fritz Haber and Carl Bosch, revolutionized food production by enabling the large-scale synthesis of ammonia from nitrogen and hydrogen. This ammonia is then converted into fertilizers like urea, allowing for dramatically increased crop yields. Without these fertilizers, feeding the current global population would be impossible.
A Fragile System: Natural Gas and Fertilizer Production
The link between energy markets and fertilizer production is particularly concerning. Natural gas isn’t just a feedstock for ammonia; it’s also a primary energy source for its production. Disruptions to natural gas supplies, whether through geopolitical events or infrastructure damage, can directly impact fertilizer output. The Persian Gulf’s role as a major supplier of both natural gas and fertilizers creates a vulnerability that extends beyond oil prices.
Even countries with domestic fertilizer production aren’t entirely insulated. India, for example, relies heavily on imported LNG from the Persian Gulf to power its urea plants as detailed in a report by GP Chem. Brazil is also significantly dependent on imported nitrogen and phosphate fertilizers to sustain its agricultural output. Even the United States, a major fertilizer producer, imports substantial volumes to meet regional demand and moderate prices.
The Sulphur Factor: Another Critical Component
The potential disruption isn’t limited to nitrogen fertilizers. Sulphur, another essential plant nutrient, is largely a byproduct of oil and gas processing. If energy shipments through Hormuz are curtailed, sulphur production will also decline, further exacerbating the fertilizer shortage. This dual impact – reduced fertilizer shipments and restricted production capacity – presents a significant challenge to global food systems.
How a Fertilizer Shock Could Unfold
The immediate effects of a Hormuz disruption would likely be delays in shipments of ammonia, urea, and LNG, potentially leading to increased freight and insurance costs. However, the more profound consequences would unfold over the coming months. As planting seasons approach in the Northern Hemisphere, farmers may face difficulties securing sufficient fertilizer supplies, forcing them to pay higher prices, reduce application rates, or alter their crop choices.
Reducing nitrogen application rates, even modestly, can lead to disproportionately large declines in crop yields. This could translate into millions of tons of lost crops, impacting global supply chains, feed markets, livestock production, and retail food prices. The timing is particularly sensitive, as fertilizer purchases typically accelerate before planting seasons. Delays of even a few weeks can be disruptive, while months-long disruptions could be catastrophic.
Beyond Nitrogen: A Systemic Risk
The vulnerability extends beyond nitrogen-based fertilizers. The production of synthetic nitrogen is tightly coupled to energy markets, and any disruption to gas supply or ammonia trade will immediately constrain global nitrogen availability. Estimates suggest that without synthetic nitrogen, the world could only feed a fraction of its current population. The Strait of Hormuz, sits at the intersection of energy and food security.
Building modern ammonia plants and diversifying fertilizer production sources is a long-term process, requiring significant investment and years to complete. In the short term, the global food system has limited buffers to absorb a significant contraction in fertilizer exports from the Persian Gulf region.
What to Expect in the Coming Months
The situation demands close monitoring. Central banks, already focused on fuel-driven inflation, may underestimate the contribution of fertilizer scarcity to overall price increases. Fertilizer shocks don’t register with the same immediacy as oil shocks – the impact on crop yields becomes apparent months later – but the consequences could be equally, if not more, destabilizing.
The international community will need to prioritize diplomatic efforts to de-escalate tensions and ensure the continued flow of goods through the Strait of Hormuz. Simultaneously, exploring alternative fertilizer sources and promoting more efficient fertilizer use practices will be crucial to mitigating the risks. The events unfolding in the Middle East serve as a stark reminder of the interconnectedness of global systems and the potential for unforeseen consequences when critical infrastructure is threatened.
This article is republished from The Conversation under a Creative Commons license.