| web | https://www.theguardian.com/environment/2022/jun/27/using-far-less-chemical-fertiliser-still-produces-high-crop-yields-study |
| author | Fiona Harvey |
| publication | The Guardian |
| date | 2022-06-27 |
| web | Damian Carrington | The Guardian | 2017-04-06 |
| web | Chloe MacLaren, Andrew Mead | Nature Sustainability | 2022-06-27 |
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