I grow several Asian pear trees. Over the past few years, I always had some problem like rust. The baby fruits (soybean to fava bean size) would mal-form, drop. Some were coated with orange color powder. This affected yield.
I also grow some apple trees. The leaves had some rust, then some fell. My mayhaw were also impacted. Not sure if the leaf rust is related to the Asian pear fruit rust.
I do have a large property and we have a lot of red cedars. I’m not sure if this is cedar rust.
So I’m thinking about some kind of fruit spray to control the rust. Not sure if sulfur type is good, or something like Surround.