You see yields like that in the US west of the 100th meridian. It's a stark divide. On the east side, farmers put seeds in the ground, rain does the rest, and you get amazing yields. West is substantially more dry. There, you see irigation and dry land techniques.
Across the heart corn belt (iowa/illinois/indiana) we see 200+ bu/ac yields for corn consistently and majority of fields are rain-fed (non-irrigated). Hell in 2014/2015 some people around me (champaign IL) were hitting 220/230. Illinois has some of the most productive soils in the world though, we are lucky!
In Australia dryland farming about half as productive is around $2,000/acre