Hi, Can you identify what is causing this damage to my apples? This picture...

Asked June 9, 2020, 10:36 PM EDT

Hi, Can you identify what is causing this damage to my apples? This picture was taken approximately 7 days after last petal fall, at the time I made my first insecticide application (other than Dormant oil that I applied in the Spring). Three fungicide applications were made before and during blossom. The picture is of a Golden Delicious but the same damage is on my Honey Crisp and also on some of my Northern Spy. Thank you, Stephen Vossberg

Summit County Ohio

1 Response

Hi -

This is either codling moth damage or oriental fruit moth damage. Our fruit tree entomologist has a great report on how to keep apples worm-free. Here is the link:
https://cpb-us-w2.wpmucdn.com/u.osu.edu/dist/1/8311/files/2014/12/How-to-keep-apples-wormfreeJan09r-nxwft5.pdf

The insecticide application was most likely too late. There are options for phermone traps, early season scouting and identification, as well as other control options.

Details about oriental fruit moth are here:
https://entomology.ca.uky.edu/ef212

Details about codling moth are here:
https://extension.colostate.edu/topic-areas/insects/codling-moth-control-in-home-plantings-5-613/