What is happening suddenly to mango planted just month ago? Suddenly few of them started turning brown and completely taken over by brown died leaf within 4-5 days. Is it potassium deficiency or verticillium wilt or something else?

Nishikant potassium deficiency .

Nishikant Apply potash fertilizer

Thanks Suresh Gollar Raman Bsc Aggriculture

You are always welcome and we are happy to assist you Nishikant.

Nishikant have you applied nitrogen fertilizer

Nomaan yes. I have used urea.

Before or after recommending Nishikant

Because it can happen due to over fertilization

Most welcome Nishikant

Nomaan before recommending at the time of plantation and after 1 month of plantation

Nomaan but one thing I must say...this problem started appearing after I aplied Iron fertilizer. I dont know whether its coincidence or because of Iron fertilizer itself....

That why the burning has seen on plant. Now Don't apply any fertilizer till the plant needs . Just do watering in gap of every 7 days if rain doesn't fall. Nishikant

spray fungicide 2-3 times in a month Nishikant

Sure Nomaan . Thanks