The Daily Mail reports arable soils in England and Wales are becoming less fertile, according to a new study. Almost 40 per cent of arable soils are being ‘degraded’, meaning they have too much clay and not enough carbon or organic matter.
The findings are based on a new ‘soil health index’ that classifies soils by the proportion of organic matter they contain compared with clay, which is too dense and compact to generally be suited to plant growth. Researchers say the index is a good predictor of how much carbon soils can take up and store and a general indicator of how well they are functioning. It could help farmers or policymakers improve the natural services soils provide, such as food production, flood protection and carbon storage.