Rust appearance

Apple    Srinagar

Rust occurrence from July in red delicious variety which eventually decreases shelf life of fruit, how it can be managed?

Posted by: waseem shafi (2 points) waseem shafi
Posted: June 30, 2017

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Kelsee Baranowski commented,
Waseem, have you noticed any insects around your plant? This damage looks similar to spider mite damage on apples
10 months ago.

waseem shafi commented,
Yes their is ERM infestation around.
10 months ago.


It looks like damage due to mites. You should establish how common this is before you consider control "Monitoring should begin before petal fall and continue through the first week of August. A good hand lens or microscope is required. Inspect 10 leaves from 10 different trees. Concentrate the inspections on the basal third of the leaf midrib on the underside of the leaf. It is too tedious to count the exact number of mites, so a quick estimate should be made on each leaf. When more than an average of about 200 mites per leaf is found, then a pesticide treatment is recommended. A treatment is also recommended upon the appearance of plant symptoms such as silvering or leaf rolling. " file:///Users/davidhughes/Downloads/apple-rust-mite.pdf

Posted by: David Hughes (141 points) David Hughes
Posted: July 2, 2017

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