A Method to Help Identify Genetically Modified Foods
The stickers that contain the PLU code (Price Lookup Code) tell you if the fruit was conventionally grown, genetically modified, or organically grown. The PLU code for conventional produce has four numbers, GM fruit has five numbers preceeded by the number 8, while organically grown produce has five numbers, preceeded by the number 9. Organically grown fruit will not be Genetically Modified or contain pesticides. Look for the number 9!
You can also download the International Federation for Produce Standards (IFPS) guide here:
Page 17 has more information on this.