N'ihi oke owuwe ihe ubi nduku na Poland, nkezi ọnụahịa maka ngwaahịa na 2020 belatara site na 62% ma e jiri ya tụnyere 2019 ruo $0,16 kwa kilogram.
Dabere na atụmatụ mbido sitere na Central Statistical Office nke Poland, owuwe ihe ubi nduku na 2020 nwere ike iru nde tọn 8,9 (+ 38% nke owuwe ihe ubi 2019). Ọnụọgụ a dị 7,3% dị elu karịa nkezi owuwe ihe ubi nduku na 2016-2018. Agbanyeghị na 2018 na 2019 N'ihi ụkọ mmiri ozuzo, oke owuwe ihe ubi nduku ji 18,4% na 11,4% belata, n'otu n'otu.
Mmepụta nduku na Belgium, Germany, France, Netherlands na UK nwere ike ịrị elu site na 6,7% ma e jiri ya tụnyere 2019, dị ka North-West European Potato Growers Association (NEPG).