Nebraska is not among the major potato growing states.

A great overview of the history of the potato industry in Nebraska is provided in this article by Alexander Pavlista.
Agricultural Statistics Nebraska
Potato Production in 2014 :7943.00(000) cwtAll seasons
Potato Production in 2014 :7943.00(000) cwtFall only
Potato Yield in 2014 :470.00cwt/acreFall only
Potato Yield in 2014 :470.00cwt/acreAll seasons
Potato Price at Producer in 2014 :10.60USD/cwtAll seasons
Potato Area Harvested in 2013 :18300.00acresFall crop only
Potato Production in 2013 :8418.00(000) cwtFall crop only