Ontem e hoje tenho visto este problema nas folhas. Estão a ficar com algumas manchas e algumas como mostra nas fotografias.
O que posso fazer para corrigir isto ?
Talvez já tenhas pesquisado mas podes ver o exemplo mais parecido.
Na minha opinião pode ser um desses 3.
Como esta na floração acho que Nitrogênio, Fósforo e Potássio
https://www.growweedeasy.com/cannabis-plant-problems/potassium-deficiency
https://www.growweedeasy.com/cannabis-plant-problems/magnesium-deficiency
https://www.growweedeasy.com/cannabis-plant-problems/magnesium-deficiency
I dunno, I see internal pressure issues, hydrogen, potentially VPD related (meaning it can influence issues with practically any mobile elements). Occasionally related to root issues.
Hey Bro nothing to worry about. Your girl is healthy and she's trying to show you her age .The fact that some bottom leaves begin to yellowish/dry and fall during flowering is part of a natural process. Also the changes of nutrients needs contribute to this phenomenon. Be relaxed and balanced all will be fine. IMO