Frequently asked questions

What are ERI fungi and why are they difficult to diagnose in the field?

Ectotrophic root-infecting fungi are a group of soil-borne pathogens, including Gaeumannomyces, Magnaporthe, and related species, that attack turf roots and stolons below the surface before foliar symptoms appear. By the time you see the characteristic yellowing or bronzing of the canopy, the root system is already significantly compromised. This makes proactive monitoring of root health through regular plug inspections essential for early detection.

What conditions favour ERI fungi activity in managed turf?

ERI fungi thrive in wet soil conditions with poor drainage, elevated soil pH, and low organic matter. Newly established turf on sand-based profiles, greens with excessive thatch, and surfaces with inadequate drainage are particularly vulnerable. Alkaline irrigation water and excessive lime applications can also increase susceptibility. Cool, wet periods during autumn and spring are typically the highest risk windows for infection.

What are the best management practices for reducing ERI fungi pressure?

Improving soil drainage, managing thatch, and addressing elevated soil pH with acidifying fertilisers are the foundation of ERI management. Adequate phosphorus and manganese nutrition supports root health and natural plant defences. For targeted fungicide programmes and root zone management strategies, contact Greenway Turf Solutions for expert guidance specific to your site conditions.