Dying china palm

[Alam64]

Thanks. Two things i repotted my whole garden with only the china palms being affected. Are they extra sensitive. Second question there does seem to be some life remaining in one of the palms. Should i replace the current soil mix with regular soil

[Alam64]

So i killed few palms by repotting with gobar ki khad. However one of the palm which had escaped repotting has developed another issue. The leaves are losing their greenery, turning rusty brown and eventually dying off. In the gobar ki khad issue even the stems had dried out, in this case the stem remains green. I did add ferrous sulphate when the first leave started losing its color
What could be possibly the problem and its issue. Unfortunately cannot post the pic here as it is too big. I can email or whatsapp.

[Izhar]

reduce the size of pic by using MS Office Picture Manager...

[Alam64]

Success at last

[Alam64]

The above problem exists even though taking care not to overwater. The ‘mali’ threw a curve ball today. Currently have been invaded by blue bottle flies, hundreds of them. As per the mali they are causing the palm tree to dry out is it possible? Secondly do the old leaves die our when the new leaves sprout or is the above due to some issue at my end