Originally Posted by mdlwn1
That is NOT a nitro deficient tree. Not that I know what it is, but I have seen similar looking leaves on Potassium deficient trees during stress. A soil test and or tissue test could provide more info.
Maple tree with yellowing leaf venation, is chlorosis from Manganese deficiency, and that raised bed with landscape stones ringed w/ retaining blocks only adds to trunk rot, and root binding.
How is the maple tree doing now??