Enhanced Efficiency Fertilizers: A Smarter Path for European Agriculture

Nitrogen has always been essential for crop performance, yet it remains one of the least efficient inputs. Even today, only 40–60% of applied nitrogen is typically taken up by the crop. The rest is lost through volatilization, leaching, runoff, or denitrification, losses that carry both environmental and economic consequences.

As European regulations tighten, this inefficiency is no longer acceptable. Under the EU’s Fit for 55 package, nutrient losses must fall by 50%, fertilizer use by around 20%, and greenhouse gas emissions by at least 55% by 2030. In countries like the Netherlands, decades of high nutrient inputs have already led to strict reductions in application rates. Farmers are being asked to produce the same, or more, with significantly less nitrogen.

Why Enhanced Efficiency Fertilizers Matter

According to ICL experts, the answer is not to abandon nitrogen, but to use it more intelligently. Enhanced Efficiency Fertilizers (EEFs) are designed to reduce nitrogen losses and synchronize nutrient availability with crop demand. They offer farmers a practical way to meet regulatory expectations without compromising productivity.

Two main technologies dominate the EEF landscape:

1. Stabilized Nitrogen Fertilizers

These products use chemical inhibitors to slow nitrogen transformations in the soil.

• Urease inhibitors reduce ammonia volatilization by slowing urea breakdown.
• Nitrification inhibitors slow the conversion of ammonium to nitrate, reducing leaching and nitrous oxide emissions. Some formulations combine both, providing what ICL describes as “double inhibition.”

2. Controlled‑Release Fertilizers

Controlled‑release fertilizers use a thin, engineered coating to regulate nutrient release. Water enters the coating, dissolves the nutrient, and osmotic pressure drives a gradual release aligned with crop uptake. This protects nitrogen across multiple loss pathways and reduces the number of applications required.

Efficiency in Practice

Field and laboratory research across Europe shows that EEFs can deliver meaningful improvements in nutrient‑use efficiency. Stabilized products are particularly effective at reducing volatilization and leaching, while controlled‑release fertilizers provide broader protection and more consistent nutrient availability.

In Hungary, closed‑chamber studies have demonstrated that controlled‑release fertilizers can reduce nitrogen leaching by up to 55%. Across Europe, field trials in potatoes, wheat, maize, rice, onions, and sugar beet consistently show improved efficiency, fewer field passes, and stable or increased yields.

Matching the technology to the cropping system is essential. Stabilized nitrogen works well for in‑season top dressings, while controlled‑release fertilizers are especially valuable in longer‑cycle crops.

Regulation Driving Innovation

Upcoming EU rules will require fast‑biodegradable coatings for controlled‑release fertilizers from 2028 onward. ICL has responded with eqo.x, a double‑coated technology using sulphur and a fully biodegradable material. It meets the new regulatory requirements while maintaining agronomic performance, a necessary evolution as sustainability standards rise.

Environmental and Economic Value

Most fertilizer‑related greenhouse gas emissions occur at field level. By reducing nitrogen losses and application frequency, controlled‑release fertilizers significantly lower emissions. Case studies show savings of:

• 56 kg CO₂‑eq per tonne of grain in France
• 18 kg CO₂‑eq per hectare in Dutch potato production

As carbon accounting becomes more integrated into supply chains, growers using EEFs can benefit from improved yields, reduced losses, and access to carbon credit programmes.

Conclusion

Nitrogen efficiency is no longer a niche concern, it is central to the future of European agriculture. Enhanced Efficiency Fertilizers offer farmers a practical way to maintain productivity while meeting regulatory, environmental, and economic demands. As ICL experts emphasize, there is no single best solution. But with the right tools, applied at the right time, nitrogen can work harder for crops, farmers, and the environment.