It will help prevent Damping-off, a fungal disease. The seedlings fall over at the soil line and when you look closely, it appears the stems have been pinched. I get ahead of the game by treating my newly planted seed trays before I see a problem. If I see any signs of mildew or fungus, I spray again. Once the secondary leaves start to grow, fungal problems no longer affect them.
Damping-off is caused by high temperature, poor light, or excess moisture so it's sometimes hard to avoid.
Daisy
