At least 17% of beef and 20% of soy exported to the EU from certain areas of Brazil may be related to illegal deforestation, a new study in the journal Science has found.

The study, The rotten apples of Brazil’s agribusiness, found that although most of Brazil’s agricultural output is deforestation-free, 2% of properties in the Amazon and Cerrado are responsible for 62% of all potentially illegal deforestation.