Spring anthracnose

So it begins. Poa greens, poor drainage, high soil salts (> 6 dS/m), battling rapid blight using Insignia (pyraclostrobin, QoI). Still some disease (not rapid blight now) - look who shows up! Anthracnose - notoriously tolerant to QoI fungicides out in the West. Inoculum from last season.

The treat temperature (65 F, 18 C) was reached in early April, but for only a short period of time. The salinity stress and heavy irrigation associated with leaching efforts likely increased the…