The nationalization had a major impact on outputs and in particular on agriculture exports. Go to Gapminder.org and check GDP during Peron's first presidency 1942-1955.
http://en.wikipedia.org/wiki/Peron (not great but a good start.)
http://en.wikipedia.org/wiki/Peron (not great but a good start.)
That sentence doesn't even make sense. The whole point of industrialization is to boost economic output. That's what it does almost by definition.