What does this mean?
Chalky or lime-rich soils may be light or heavy, largely made up of calcium carbonate and are very alkaline.
Clay soils are potentially fertile and hold a high proportion of water. They drain slowly and take longer to warm up in spring.
Loam soils are s mixture of clay, sand and silt that avoid the extremes of clay or sandy soils. Fertile, well-drained and easily worked.
Sandy soils have a low clay content, drain quickly, easy to cultivate and work. They can dry out quickly and are low in plant nutrients. Often very acidic.