"Terryc" wrote in message
0tterbot wrote:

personally, i don't think there's such a thing as "unviable" land
in & of
itself -

The general adjective is farming and basically land meets this
criteria
when it can not be farmed in a sustainable way, i.e. you are
generally
degrading the land over time.

Or using inputs that degrades other land.

The old expression of "keep 10 sheep to the acre, until you can keep
10 sheep to the acre" sums that philosophy up very well.