[FrankS]

"I have a 40 year old orchard of some 20 trees containing two Bramley apples, one is doing fine and the other is looking very poorly. All the leaves are turning yellow and orange over the last couple of weeks I have attached a photo which shows the two trees. My question is, what is wrong, is there a treatment or do I need to cut it down and remove the timber so other trees are not affected"