Fertiliser prices and shortages are hamstringing our farmers. But we have other options

When was the last time you bought a loaf of bread?

Chances are you read the ingredients list and saw flour, yeast and salt. But behind every slice is a surprisingly fragile global supply chain that starts with another often overlooked ingredient: nitrogen fertiliser.

Without nitrogen fertiliser, the world’s farmers would struggle to produce enough food for our ever-growing population. It helps grow the wheat used…

© La Conversation - mercredi 19 août 2026