so with deep plow or in many cases back-breaking work, the land was made fertile again. And yes, pulverized chalk is one of the methods used to raise the pH.
It's not high-quality farming land, often too much sand and too little peat.
Nowadays the little heath left in Denmark is usually protected. It'll usually turn to forest if left alone with no grazing.
There was a hard layer half a meter or so beneath the top soil
https://en.wikipedia.org/wiki/Hardpan
so with deep plow or in many cases back-breaking work, the land was made fertile again. And yes, pulverized chalk is one of the methods used to raise the pH.
It's not high-quality farming land, often too much sand and too little peat.
Nowadays the little heath left in Denmark is usually protected. It'll usually turn to forest if left alone with no grazing.