Edema?

[rbarata]

Originally Posted by estación seca

The parts dying after spraying are already bad. Spraying only makes them apparent. I would continue spraying for mites with your mixture.

ES, I've followed your sugestion and kept spraying. Yesterday ir was time for a 2nd round. Half an hour later I noticed the appearance of new halos on three leaves, occurring mainly along the leaf nerves. So far it didn't developed black spots and the hallos seems to have disappeared.