I am a first time grower and I have one now month old Papaya under CFL`s. During last few days Ive noticed how the lower leaves have developed brown spots which later become holes ( not always ) , but pretty often. The top leaves look fine. Heres a pic I took yesterday.
Now this leave is a lot worse. The edges are quite brown and dry. I`ve seen some flying insects flylike chilling in the branches , but I dont think they can do this. I think its ether PH or over fert problem.
I have given nitrogen dominant fertilizer three times now although the last dosage was tiny since I started the flowering cycle so I gave a tiny bit of this stuff with the phosphorus dominant autumn fertilizer.