I got halfway through writing a short essay on this, lost it to an abrupt anti-virus update and couldn't be bothered to start again. Hence my rather brief reply. Sorry about that.
Here's a nice little link:
https://evonomics.com/josh-ryan-collins ... ic-theory/
...land and capital are fundamentally distinctive phenomena. Land is permanent, cannot be produced or reproduced, cannot be ‘used up’ and does not depreciate. None of these features apply to capital. Capital goods are produced by humans, depreciate over time due to physical wear and tear and innovations in technology (think of computers or mobile phones) and they can be replicated. In any set of national accounts, you will find a sizeable negative number detailing physical capital stock ‘depreciation’: net not gross capital investment is the preferred variable used in calculating a nations’s output. When it comes to land, net and gross values are equal.
It goes on to discuss the housing market rather than farming, but it still touches on why investors in a mature economy might want to turn to land banking as a no-lose bet, and why therefore intelligent taxation regimes should be devised to capture society's share of the resulting economic rent.