Scotland’s harmful acidic soils - Can liming improve cropping sustainability?
The Soil Survey of Scotland shows that large areas of Scotland have acidic soils. Soils with a pH less than 5.6 inhibit root growth, which can reduce crop yields. Liming, the addition of calcium and magnesium-rich materials that alkalinise the soil, is a valuable practice to manage soil acidity. Indeed, liming has implications for both the environment and agricultural production. To understand the consequences of liming better, we have studied historic data on crop yield responses to liming.