What method has shown limited success in controlling Fairy rings?

Deep tilling and application of an approved fumigant can help manage fairy rings, which are caused by certain fungi that can create issues in turfgrass. This method targets the underlying mycelium and helps disrupt the fungal growth in the soil. By turning over the soil, deep tilling can physically break apart the fungal mycelium, preventing it from spreading and thriving in the turf environment.

However, it is important to pair tilling with a suitable fumigant, as the fumigant can target the fungal organisms and help reduce their population. This two-pronged approach can create less favorable conditions for the fungi associated with fairy rings.

In contrast, frequent fertilization with phosphorus, regular watering, and continuous mowing at low heights do not specifically address the underlying fungal issue and may even exacerbate the problem by promoting more robust fungal growth or turf stress.