Perhaps this website can help you identify what is going on:
https://ephytia.inrae.fr/en/C/10750/Tobacco-Identify-diseases
Its a French website but its in English.
I have the app and regularly go to the website as well. It’s fantastic although they don’t give much material on conditions outside of France and Europe, but do mention some info on the rest of the world, mainly the US.
From all my deductions, this was, and still is, heat/sun scald. I have some references a commercial farmer shared with me, which I’ll share but for disclosure the photo’s don’t belong to me, which shows similar characteristics.
I’ve got the scald on my newest top leaves and I’ve found out there is very little I can do about it.
I can shade them, which is not possible in my current circumstances, I can apply mulch, which I’m not going to do as I have a heap of pests, or spray them with kaolin clay, which is also not an option for me.
So I’m leaving the scalded leaves, they provide some shade for the others at least.
It’s been scorching this week and we are firefighting, giving two small waterings at 11h00 and 14h00. Trying to cool the roots.
I applied my first 10gr per plant SOP on Broadleaf 1 and Mixed 1. Broadleaf 2 will get their portion on Monday. Mixed 2 is weird. I think I’m going to give it a generic “multiplant” fertilizer for their entire grow, for science. I have a 6:1:3 that is water soluble.
Other than that, I don’t really have much to update. Plants are being topped and suckered.
I have 50 planted Olor plants inside in 200ml bags in the grow tent, I’ve swapped their day night cycle to keep the tent cool. And then theres the outside stepchildren Olors. They need some time in the limelight, growing well. Taller than in the tent, but the plants looks healthier of that makes sense. The tent’s plants are very compact.
One more thing. I bought an “antique cigar mould” on auction for very cheap. Definitely going to use it.
Edit: Size should be petit coronas.