285 kg/year was the approximate per capita potato consumption around 1900 in Germany, before pasta and rice were inexpensive and convenient, and disposable income broadly high - as of 2008, it was only around 63 kg/year: https://taz.de/Das-Jahr-der-Kartoffel/!5170413/
This article also reports that Niedersachsen potato fields (large state in northern Germany) produce an average of 45,000 kg/hectare, or about 18,000 kg/acre.
This article also reports that Niedersachsen potato fields (large state in northern Germany) produce an average of 45,000 kg/hectare, or about 18,000 kg/acre.