What is the pH of your soil and water. Citrus do not absorb iron well, if the pH of either is over 7.5 If your pH of soil or water is over 7.5, you have to apply chelated iron, or lower the pH (soil sulfur for soil; vinegar for water). I suspect your issue is iron; doesn't look like magnesium or manganese.

I does not look like an iron deficiency. Leaves with iron deficiency do have green veins on an otherwise yellow leaf, BUT with no dark green boarder to the sides of the veins as in your pictures.. The leaves are consistent with a manganese deficiency.. As for magnesium deficiencies, the deficiency symptoms shows up on the OLDER leaves of the tree, and the deficient leaves in your pictures are the newer leaves.

This looks very similar to what happened to my lemon tree. My tree has been doing well by pushing out tons of new leaves which appear to be fine.

Silica,

I did try a tiny dose of Epsom salt which i believe contain magnesium 2 weeks but half dose should i repeat in full dose ?

Of all the options, Magnesium is not one.

johnmerr(11)

any specific brand you are into from Amazon ?

This is NOT iron chlorosis. If I had to vouch for one I would say it is manganese deficiency.

So, the condition of the leaves in the below picture would be caused by an iron deficiency, instead of Khourshed’s manganese deficiency, yes?

(Not trying to hijack your thread, Khourshed - just trying to illustrate the difference :))

Yes, certainly looks like an iron deficiency. What you need to determine is if the deficiency is due to an actual lack of the nutrient Iron in the medium, or due to a medium pH 8 or higher.

Thanks, Silica! The tree arrived in this condition. It is now receiving the same soil mix, fert, and care my other trees are receiving. I’m hoping the issue will correct itself with in time and new leaves, but I’m wondering if I need to add chelated iron since it is already behind the curve.

It certainly would do no harm, and most probably would show some positive results.