Heat stress or deficiency?

[Michaelllllllll]

My plants have been experiencing severe heat and humidity I have I hope nearly stopped yellow spot septoria,its rife in my garden Ive got no chance of eradication.
Anyway point is the pure sativa are fine, I have a hybrid,its not happy,can anyone help

 

[Michaelllllllll]

Sorry

 

[Buds Buddy]

Looks like you're low on nitrogen. Are you feeding nutes ? Looks like that plant wants stronger nutes to get enough N.