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

Westend61/Getty 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 in bread, the barley in beer, the canola that becomes cooking oil…