With the state of housing one of collapse, I don’t really see how farmland prices are rising. What is your source for that statement?
I am not familiar with the term ZIRP.
Nor do I believe Russia and/or China has any interest in destroying the dollar since that would wreck the latter’s export policy.
The Arabs are trying to make the Euro the currency to buy oil but, given the problems within the Euro block I do not believe that will be a long term solution. Nor will they accept any other currency than the dollar or Euro.
Gold is in no way becoming money again.
You can build more houses. Much harder to manufacture more farmland.