Apple tree spray - Ask Extension
I have a zestar and honeycrip, both 5 years old. The honeycrisp has about a dozen apples, and the zestar maybe 3 dozen. They both have multiple apples...
Knowledgebase
Apple tree spray #876114
Asked July 06, 2024, 2:11 PM EDT
I have a zestar and honeycrip, both 5 years old. The honeycrisp has about a dozen apples, and the zestar maybe 3 dozen. They both have multiple apples with rotten looking spots on them. From what I've read, I don't think it's scab, and I have used a fungicide spray, but the concentrate is now 4 years old and may be useless. I'm resigned to bad fruit this year. My real question is what is an all purpose broad spectrum spray that gives the best chance of high quality fruit?
Crow Wing County Minnesota
Expert Response
It is critical to identify the cause of the problem before considering what spray to use. Your pictures suggest coddling moth. It’s also possible to have more than one problem. Compare what you are seeing with the following websites.
1. https://apps.extension.umn.edu/garden/diagnose/plant/fruit/apple/fruitholes.html
2.
https://extension.umn.edu/yard-and-garden-insects/codling-moths
3. If you don’t think it is coddling moth the following drop-down menus have other possibilities based on your observations.
https://apps.extension.umn.edu/garden/diagnose/plant/fruit/apple/
When you have identified the problem the following website gives spray suggestions and timing.
https://conservancy.umn.edu/server/api/core/bitstreams/ec31340c-0611-4f09-abe3-fd2bb03c7484/content
1. https://apps.extension.umn.edu/garden/diagnose/plant/fruit/apple/fruitholes.html
2.
https://extension.umn.edu/yard-and-garden-insects/codling-moths
3. If you don’t think it is coddling moth the following drop-down menus have other possibilities based on your observations.
https://apps.extension.umn.edu/garden/diagnose/plant/fruit/apple/
When you have identified the problem the following website gives spray suggestions and timing.
https://conservancy.umn.edu/server/api/core/bitstreams/ec31340c-0611-4f09-abe3-fd2bb03c7484/content
