You don’t see nematodes, but they can wreck a crop before you know what hit you. I’ve seen fields bounce back just by switching to a biological treatment. One that’s worked well is Bacillus firmus. It’s not some harsh chemical—it’s a natural soil bacterium that sets up around the roots and makes it tough for nematodes to settle in. I like that it doesn’t mess with the good stuff in the soil. Whether it’s seed-applied or mixed into the soil, it helps crops get a strong start. Treating early saves you headaches later. Trust me, it makes a difference.