in the UK(don't know about everywhere else) we have 5 "grades" of land, here are some notes I made a few years ago:
Grade 1: Best Quality, suitable for most types of Horti and Agri cultural use.
Grade 2: Not Quite So Good, problems with some root crops, but acceptable.
Grade 3: good for grazing and cereals.
Grade 4: mainly grazing.
Grade 5: ROUGH!
most land in my location is grade 4 and 5.
Grade 1: Best Quality, suitable for most types of Horti and Agri cultural use.
Grade 2: Not Quite So Good, problems with some root crops, but acceptable.
Grade 3: good for grazing and cereals.
Grade 4: mainly grazing.
Grade 5: ROUGH!
most land in my location is grade 4 and 5.