Question
sir my plot situated in 5000 to 6000mt. height.there are some problem in apple tree:

1.Root warm biarer is main cause of the  Diseases
2.because of sunny side the growth of the aplle is very slow.
3.maximum trees are destroyed because of high temprature.
4. when we do prunning then when we cut hard the tree branches gets black in colour because of leakage of juice of the branches.
5.volleefed is the one of the major  Diseases .
6.funngy side is also one of the major  Diseases .
7.the branches of the trees are very weak.

so pls advise us with the spray oil, medicines, manures ,fertilizers ,insecitisides and pestisides to be used to prevent the  above mention  Diseases  from my aplle orchards

Answer
Prashant:

The insect borers sounds as if they are causing significant problems. These insects can damage trees by creating wounds for fungi to enter tree and cause decay. Getting an appropriate insecticide to the insect is a major issue.  The best method to control these types of insects is  (1) Obtain an accurate identification of the borer (adult stage)then apply the most effective insecticide as a preventative trunk spray.

Hope this helps

Steve