What Happens to European Farmers When Fertiliser Becomes Unaffordable — A Field Report

Natural gas prices drive fertiliser costs. Fertiliser costs drive food prices. European farmers caught in the middle are making decisions right now that will affect your food bill in six months.

The grain fields of the Beauce — the agricultural plateau south of Paris that provides approximately 25 percent of French wheat production and that has been farmed continuously since the Gallo-Roman period — are being planted this spring under conditions that experienced farmers describe as the most economically challenging in their careers.

Nitrogen fertiliser, whose production requires enormous quantities of natural gas, has spiked to prices that make standard application rates economically irrational for many crop-price scenarios. A farmer who committed to growing wheat before the Iran war began on February 28 made their planning assumptions at gas prices that were approximately 40 percent lower than current levels. The additional fertiliser cost — nitrogen fertiliser prices have increased by 35-45 percent since early March — falls directly on the farming operation's margin, which was already thin before the crisis.

The decision that farmers are now making, field by field across the Beauce and across equivalent grain-producing regions in Germany, Poland, and the Netherlands, is how much to reduce fertiliser application. Applying full recommended nitrogen rates at current prices makes many operations unprofitable. Applying reduced rates reduces yield but also reduces the fertiliser cost per hectare. The optimal reduction varies by soil type, crop variety, expected yield, and current grain futures prices — a calculation that requires real-time data and agronomic expertise that not all farmers have easy access to.

The aggregate effect of thousands of individual farm decisions to reduce fertiliser application will be visible in the European harvest data from July onward. Preliminary estimates from the agricultural economics unit at Wageningen University suggest that European wheat yields could be 8-15 percent below trend in 2026 due to reduced fertiliser application, with the shortfall concentrated in the regions where gas-intensive fertiliser accounts for the highest proportion of input costs.

For European food prices, a 10 percent European wheat shortfall in a global market that is already tight due to Ukraine's reduced production capacity and the Iran war's disruption of Middle Eastern food supply chains will have measurable inflationary effects — arriving precisely at the moment when European households are already managing elevated energy costs.