COPENHAGEN — Hundreds of Danish farmers gathered outside the Parliament on Tuesday to protest new fertilizer regulations aimed at reducing nitrogen pollution in water bodies. The demonstration, which caused a three-kilometer-long procession of tractors heading into the capital, reflects widespread opposition within the agricultural community to the proposed limits.

The legislation, which lawmakers were set to vote on Thursday and is expected to pass with broad cross-party support, would impose tighter restrictions on nitrogen fertilizer use, particularly in regions draining into vulnerable fjords. Farmers in these areas may need to reduce fertilizer application, change crop types, or limit intensive farming practices. The rules are designed to take effect in 2024 for some and by 2028 for others.

The Danish government argues that current measures have failed to sufficiently protect fragile marine ecosystems and that stricter, targeted controls are necessary to meet environmental standards. Christian Rabjerg Madsen, the minister for nature and animal welfare, addressed a crowd of roughly 4,500 farmers and agricultural workers the day before the protest, emphasizing the urgency of addressing pollution and the responsibility to future generations. His remarks were met with boos and the sound of foghorns.

Farmers, however, warn that the new rules could severely impact their livelihoods. “If this is passed on Thursday as it stands now, I can’t justify farming anymore,” said Jens-Ole Dilling, a seventh-generation grain farmer whose family has worked the same land northwest of Copenhagen for more than two centuries. Many farmers fear reduced crop yields and diminished profitability, with some suggesting that the measures could force them out of business.

The protest outside Parliament featured brightly colored tractors, horn honking, and signs conveying the sector’s concerns, including slogans like “No farmer, no food, no future” and caps labeled “Fired by the state.” The scene underscored the tension between Denmark’s agricultural community and policymakers.

Denmark’s situation aligns with broader European Union efforts to limit manure and fertilizer application to combat environmental degradation. While nearly 60 percent of Danish land is dedicated to agriculture, the country has experienced a societal shift. Many urban residents have grown distant from farming life as environmental issues have become more prominent in public discourse.

Political analyst Niels Thulesen Dahl noted that Denmark has moved away from its agricultural roots, leading to a divergence in national priorities and perspectives on farming. While many Danes are detached from agricultural concerns, some individuals, particularly those with farming backgrounds, remain deeply connected to the land. Mariette Grathwohl, a 26-year-old schoolteacher from a farming family, described growing up “in a tractor” and expressed uncertainty about the sector’s future in light of the new regulations.

As the vote approaches, Denmark faces a critical balance between environmental protection and sustaining its agricultural traditions.