Yes, the white parts look like it. The speckling of your leaves is also an indicator of mite damage. Check those white clusters closely to make sure they are not a mass of new eggs.
It seems like the plants have some time to go and the buds look to be browning a bit which makes me think of bud rot, but I can't really tell from the picture. The environment is going to get bad out there very soon, I know the area well, how much longer do you think you have until harvest?
Glad that you are making progress.
That spray has me curious as to what the active ingredients are. One of the problems major grows face in legal states is pesticide approval. Many pesticides have been tested for dangers when sprayed on food for consumption, but hardly any have been tested for consumption after combustion. Eagle 20 was a miracle worker on PM, then it was discovered the main ingredient converts to cyanide gas when combusted.... so that one was removed from the approved products list.