Grower here: Definitely thrips.
They're very easy to deal with when their numbers are still low, but get considerably more difficult as they continue to breed, and they breed rapidly in the right conditions.
I can offer advice on how to deal with them, but since my experience is with commercial crops, it'll depend on how much work you're willing to put into it or how much you're willing to spend.
EDIT:
Blue sticky traps work very well at trapping them when they've reached the winged stages of their development. This will help slow down the breeding cycle, and also give you an idea of how bad the infestation is.
There are many commercially available predatory insects you can purchase, in varying price ranges, that will help keep their numbers in check.
Spraying with a product that contains the bacterial biological control agent Spinosad can be an effective knock down and it's also been shown to have very low toxicity to the thrips' natural predators.