sick dwarf tropical apple (forum)

Lakes starts with ...
Hi Good People.

Im a novice fruit tree grower. I live in the Northern Rivers in NSW.
I have two Dwarf tropical apples one of which(pictured) has something going on in the bark on the lower trunk(pictured). Ive not been able to find any info regarding this issue.
Can anyone shed some light on what it is and a potential remedy???
Also any info on pruning

Pictures - Click to enlarge

Picture: 1
Picture: 2

Time: 1st December 2020 8:36am

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About the Author Lakes
THE CHANNON 2480 NSW Australia
#UserID: 25032
Posts: 2
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David01 says...
Hi Lakes,

You have a very fast growth Apple grafted on a slow growth rootstock called Dwarf Apple. The top part of the tree cannot growth healthy because of lacking or restricted nutrients supplied from the small root system. Cheers

Time: 1st December 2020 10:20pm

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About the Author David01
CRAIGIEBURN,3064,VIC
#UserID: 16671
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Lakes says...
Thanks for the reply David.
Is there anything I might do to help remedy the issue?


Time: 3rd December 2020 10:31am

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About the Author Lakes
THE CHANNON 2480 NSW Australia
#UserID: 25032
Posts: 2
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David01 says...
You have 2 options here:
1. In order to match the top growth to the bottom supplied energy you need to prune the top part of the plant few times a year.
2. Buy the normal graft Apple. Cheers

Time: 5th December 2020 4:58pm

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About the Author David01
CRAIGIEBURN,3064,VIC
#UserID: 16671
Posts: 467
View All David01's Edible Fruit Trees