"Terra di Bari PDO, Toscano PGI and Val di Mazara PGI, the three largest geographical indicators in the country, also contributed substantially to the growth."Val di Mazara is a PDO, not a PGI, and PGI Sicilia for the entire island of Sicily covers a much larger territory than PDO Val di Mazara (Val di Mazara PDO text here: https://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:C:2000:108:0002:0004:EN:PDF). Do you mean "largest" in a sense other than land area?