Is a fungus among us?

[scottf4]

Hi all, hoping to identify if I indeed have a fungus issue and how to attack it. Background: this is my back yard, not my newly renovated front yard. It is a tall fescue mix, probably 15 years old. 2.8k sqft without irrigation system. Applications this fall: 10lb/k of 10-10-10 on October 1, 24d and triclopyr applications in September and October 7th respectively. Let me know if you need any more info, greatly appreciate the help!

[MorpheusPA]

I can't see one, but try taking the photo in shadow later in the day. Powdery mildew and more subtle symptoms don't show well in sunlight.

[scottf4]

Here is another picture. What had me concerned originally is the black dots on the browned leaf

[MorpheusPA]

I'm only seeing a little rust, which isn't unusual in fall and generally doesn't do harm to the lawn. I might not be seeing something that's there, though, so a closeup might be needed!

If it's the rust that's concerning, water early in the day and make sure the grass dries by nightfall. If you haven't fed in fall or within the last month, you can do so now. The nitrogen helps the lawn overgrow the damage.

Treatment for rust usually isn't necessary except in extreme cases. This isn't an extreme case as of yet and most cases of rust never become extreme. I get some every year myself to about that level in some places and simply ignore it. It ends with cold weather and that's that.

[scottf4]

Thanks Morph!