A full year of disease diagnoses

January 29, 2026

Lee Butler and the NC State Turf Diagnostics Lab have published their summary of the samples submitted to the laboratory in 2025.

View the full report here: 2025 Turf Diagnostics Lab Review

For bentgrass greens, 55% of the samples had no disease. 8% had high salt, 7% had black layer, 5% were diagnosed with pythium root rot, and 3% with pythium root dysfunction. Those top four are all related to the rootzone; managing the rootzone so water and salt can…