Cider apple trees

Question

Some of the leaves appear to be curling up and have a rusty colour.
On one particular tree the new fruit bearing shoots are falling off and it seems that they have been eaten.

What is the cause?
What can I do to improve the situation?
What would be the best treatment that I could use?

Many thanks in anticipation.

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Answer 1

Regular spray schedule can help with disease and pests on fruit trees.
These links have more information.

https://www.gardeningknowhow.com/edible/fruits/fegen/fruit-tree-spraying.htm
https://www.gardeningknowhow.com/edible/fruits/apples/apple-tree-diseases.htm