Apple Tree Question ??.

I have had three Apple Trees in the garden for about Seven Years.
They are allegedly Braeburn.
Since they started to fruit the fruit has always been green and lines of red running through the apple,and they have been a good size with a good yield each tree.
This Year one tree has totally changed.
The apples are now smaller and very much redder,they resemble Johnathan apples.
The branches have between six to fourteen apples per branch,much much more than other years.
The weather this year has been exceptionally warm and also I have been feeding them with Tomorite Fertiliser for the first time.

Could these conditions cause the change to one apple tree out of three trees planted on the same day ??, or am I growing a new Species of fruit ? Tomapple ?? ..

 

Ello Music

Sounds more like the tree was under stress, unless you'd pruned it to below the graft, which it doesn't sound like you have.