What exactly is the "fertilizer" from the Persian Gulf and how is it related to petroleum?

 

The "fertilizer" from the Persian Gulf primarily refers to synthetic nitrogen-based fertilizers—specifically urea and ammonia—as well as sulfur, which is crucial for making phosphate fertilizers. [1, 2, 3]

These fertilizers are directly linked to petroleum and natural gas because fossil fuels serve as the raw essential ingredients (feedstocks) and energy sources required to manufacture them. [1, 2, 3]

How Fertilizer is Made from Oil and Gas

Synthetic fertilizers cannot exist without the oil and gas industry. Their relationship is built on two primary chemical dependencies:

• Natural Gas and Naphtha as Feedstocks: To make nitrogen fertilizer, chemical plants use natural gas (methane) or naphtha (a liquid hydrocarbon derived from refining crude oil). Through a high-pressure chemical technique called the Haber-Bosch process, the hydrogen from these fossil fuels is combined with nitrogen from the air to create anhydrous ammonia. [1, 2, 3, 4, 5]
• The Conversion to Urea: This chemical ammonia is then combined with carbon dioxide—another byproduct of fossil fuel processing—to manufacture solid urea, the most widely used nitrogen fertilizer in global agriculture. [1, 2, 3, 4, 5]
• Sulfur Byproducts: The Persian Gulf accounts for nearly half of the global sulfur trade. Sulfur is not mined independently there; it is stripped as a byproduct during the refining of crude oil and processing of sour natural gas. This sulfur is converted into sulfuric acid, which is required to process raw rock into phosphate fertilizers (like DAP and MAP). [1, 2, 3]

The Persian Gulf's Role in Global Supply

Because the Persian Gulf sits on massive oil and natural gas reserves, countries like Qatar, Saudi Arabia, the UAE, Iran, and Bahrain have built massive industrial facilities to turn their raw extracted gas directly into fertilizer. [1, 2, 3, 4, 5]

Key Product	Gulf Share of Global Exports	Primary Agricultural Use
Urea	~36% to 49%	Promotes green leafy growth in crops like corn and wheat.
Ammonia	~29% to 30%	Applied directly to soil or used as a building block for other nutrients.
Sulfur	~45% to 50%	Critical component for processing raw phosphorus into usable plant food.

Why This Matters Right Now

Due to geopolitical tensions and the effective closure of the Strait of Hormuz sea lane, roughly one-third of the world’s seaborne fertilizer trade is trapped or disrupted. Because 99% of synthetic nitrogen fertilizer relies on fossil fuels, any shock to Persian Gulf oil and gas immediately triggers a global food supply crisis. When energy prices spike, fertilizer costs skyrocket correspondingly, leading to lower crop yields and heightened global food inflation. [1, 2, 3, 4, 5]