Err I hate to be the one to tell you its my understanding that produce codes that begin with a 3 have been irradiated. :( which is so aggravating! A lot of papayas have a produce code starting with 3 too! and nearly all the oranges...and I noticed some apples are starting to as well! Irradiation better not spread to all fruits and vegetables in time! It really makes me want to just grow all my own food! Too bad we can't go live next to a nice tropical wild "orchard".
Also I noticed some organic oranges are start with a 9 followed by a 3. I wonder if they have been irradiated too!
No, the 3 has nothing to do with irradiation. Irradiated food is not labeled though the PLU code. Organic products have the same code as conventionally grown - they just add a 9 on the front. Eg: banana 4011, organic banana 94011