u/andf0rest

​Hi everyone, I've noticed a recent issue on the turf that I need help diagnosing.

​Individual grass blades are turning dark purple and then black. It's not a general chemical burn.

​Here are the details:

​Symptoms: Dark purple/lilac areas that become black on the blades. Also, in some areas, it forms patches that look like it lacks watering/irrigation.

​Turf type: Football pitch (low-cut turf).

​My suspicion: I suspect some type of fungal disease, possibly Helminthosporium (Leaf Spot), but I want to confirm.

​Request:

​Can you help me identify this based on the photos? What type of fungus do you think it is?

​Any recommendations for management or effective treatment?

​I'm attaching macro photos taken today. Thanks in advance for the help!

Found in the pyrennes.

Hi everyone, looking for advice on these symptoms:

Symptoms: Shredded/white tips and necrotic lesions on the leaf blades (see photos).

Environment: Pyrenees (high altitude), heavy morning dew.

Mower: Dennis reel mower.

Is this just dull blades (mechanical stress) or an early fungus like Dollar Spot? Should I apply fungicide or just sharpen and add some nitrogen?

Thanks!