The nitrogen dilemma: Can we reduce fertilisers and still feed the world?
When nitrogen-based fertiliser runs into water systems it can result in toxic algae blooms, leading to oxygen depletion and vast oceanic ‘dead zones’. Evidence suggests their use also contributes to air pollution, increased rates of cancer and reduced biodiversity, as well as emitting nitrous oxide – an extremely potent greenhouse gas. … A team of scientists, led by the University of California, Davis, has come up with a five-step plan to tackle this two-sided problem.