Of about 4 million tonnes of grain imported to Poland, only 700,000 tonnes transited, and the rest remained in Poland.

Omissions

• NIK's aggregate of 4.3 million tonnes over 16 months covers both grain and oilseeds (zbóż i roślin oleistych); the ~4 million tonnes 'grain' figure is the grain-only component of the same audit.
• The claim frames the imports as causing market destabilisation; whether they 'destabilised' markets is a political interpretation, whereas NIK's finding is that the state failed to create a legal and organisational framework to control the inflow and transit of Ukrainian grain.
• The 3.4 million tonnes that stayed in Poland were subsequently largely re-exported from Poland to third markets, so 'remained in the country' describes the immediate transit outcome rather than permanent domestic absorption.

Sources

• PrimaryNajwyższa Izba Kontroli (NIK) – Supreme Audit Office of Poland, 'Zboże i rzepak z Ukrainy – kto na tym zarobił, a kto stracił?'"Do Polski wjechało ponad 4 mln ton zboża i nasion roślin oleistych, z tego tranzytem objęto 0,7 mln ton, a 3,4 mln ton zostało w kraju."
• PrimaryNIK report 'Import oraz obrót zbożem i rzepakiem z Ukrainy' (PDF)"W tym okresie do Polski sprowadzono np. ponad 4 mln ton zboża, z tego tranzytem objęto 0,7 mln ton, a 3,4 mln ton zostało w kraju."
• SecondaryIPG Journal (Internationale Politik und Gesellschaft), 'How the grain conflict undermines Ukrainian-Polish relations'"From June 2022 to May 2023, Poland imported a total of 4.5 million tonnes of grain and oilseed from Ukraine, of which around 3.5 million tonnes ..." (remained in Poland)
• SecondaryPBS NewsHour, 'Five European countries will extend ban on Ukraine's grain'"...grain came to Poland from April 2022 through March 2023, with 3.4 million tons remaining there and only about 700 tons moving through."