[jsonne]

I assure you the wheat field will survive without the skyscraper, the other way around not so much. Cities may believe that they are independent of agrarian and rural society but the reality is that modern cities consume an incredible amount of raw resources and by necessity require the resources that an agrarian society produces. While it may sting and be sub optimal an agrarian society doesn't per say need an urban one to survive.

[crooked-v]

"Agrarian society" doesn't really exist anymore in the first world, given the overwhelming centralized corporatization of farming.

[AngryData]

The Amish might count atleast.

[adrianN]

Modern farming is also dependent on machines and chemicals manufactured in cities.

[mc32]

Those chemicals are not typically made in cities but either outskirts or in far flung towns outside cities.