Originally Posted by moses wellfleet
Are you possibly mistaking fungus gnats for root aphids? It happens a lot, sorry if I am way off!
No these definitely aren't fungus gnats, I've never found those to be problematic. They're root aphids but I haven't been able to identify the exact species. They don't seem to be the rice root aphid.
Update on the Biowar effectiveness - I think it acts as an aprodisiac. Just joking of course but I am seeing an explosion of fliers at the moment. Upon inspection of culled male rootballs I'm not finding any crawlers though and not seeing evidence of root damage so maybe the combo of the biowar and predators is having some positive effect.
Nematodes and beneficial fungi up next I guess.