I have an indoor avocado plant which I just repotted but up until this point have really neglected. Despite this it seems to have grown happily over the last two years and hasn't required or received much attention.
I would like to take better care of it and in repotting I noticed that there is potentially some fungus growing on some of the leaves as shown here:
I do not know if it is a fungus or not but the white speckles seen most easily at the top of the leaf cannot be easily rubbed off the leaf and feel a bit hard to touch. These spots are on about 50% of the leaves (maybe a bit less). The rest of the plants' leaves look very healthy in my opinion:
I would like to know if there is anything I should do in this situation? I have read that I should both leave and cut off any leaves with fungus on. That I can buy some anti-fungal stuff for the leaves etc. Is there anything I should do to help the plant?
Some of the tips of the leaves are also brown. I read that this is probably due to a high concentration level of salts in the soil and have since repotted the plant to try and fix that issue. I am assuming the brown leaf tips and the fungus are unrelated.