Seedling disease

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sastry

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Hi
I have these crosses grown from flasks, and they are about two year old, suddenly I see blackening of leaves starting from the tip and spreading to the entire leaf, is it a fungal disease, what is the problem and the treatment can anyone throw light on these. I have attaIMG_20211015_213744 (1).jpgIMG_20211015_213919.jpgIMG_20211015_214050.jpgched the pictures. Thank you in anticipation
 
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Happypaphy7

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You might want to read up on damping off disease on plant seedlings.
This far advanced case means that the plants are goner unfortunately.
 

BrucherT

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I’ve had this in my house. I cut off the bad stuff, doused them in Physan, let them dry, then doused again, let them dry, then doused them in alternating solutions of KelpMax and MegaThrive. Oh, forgot: treated the cuts with “Dragon’s Blood.” Then after 3 weeks, I fed with dilute CalMag, then resumed the usual k-lite feedings All the plants (P. fairrieanum) have survived for two years.
 

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