Leaf curling

[laidbackdood]

Any idea why my leaves are curling like this please?.....i suspect potassium deficiency?   Thanks.

[lebmung]

I think your tree is water stressed. This can come from root problem, such root rot. Now because of summer comes the humidity gets low and the tree is slowly dying.
You can check the roots, and to increase humidity place in under shadow with a plastic cover.

[Millet]

Water stress is of course a possibility.  However, I tend to suspect a potassium deficiency.  What is the potassium content of the fertilizers you are applying?

[laidbackdood]

think its balanced between n and p millet.