[Lawndad]

I just noticed some lesions on these blades of grass. I was wondering if it's Dollar Spot or Brown Patch based on the lesions alone?

As far as the overall grass is concerned, it's not the textbook DS circles or the patches of brown grass as BP will tend to look.

I remember there was a website that would tell you what disease was present in your area by zip code but I couldn't find that to help me either.

I wanted to know to see if I should treat it with a little nitrogen if it was DS and if not I didn't want to feed the BP. 😬

Thanks for any insight.

 

[Green]

I've been noticing a few recently, too: https://thelawnforum.com/viewtopic.php?f=9&t=3003
Some don't even have the defined border like most of yours do. Some of this may be dollar spot, but I'm not sure. Check out my photo as well.

 

[Jconnelly6b]

I have the same along with red thread. I spot treated with propicanizole this evening.

I think it was from the heat wave and rain that began 2 weeks ago.

 

[social port]

@Green
I looked at that blade the other night for quite a while. I don't know...but it does look patchy.

Any chance that this might be gray leaf spot? Especially @Lawndad ?

Like I said, I really don't know. Just trying to narrow things down.

 

[Green]

@social port...All I know is, I ordered 2.5 gallons of Serenade today...

 

[Lawndad]

I've been noticing a few recently, too: https://thelawnforum.com/viewtopic.php?f=9&t=3003
Some don't even have the defined border like most of yours do. Some of this may be dollar spot, but I'm not sure. Check out my photo as well.

Yours looks more like BP. It doesn't have that dark brown border around the lesions but then again I'm on here asking because I dunno. 😜

Does your have the textbook BP "patches"?

 

[Lawndad]

@Green
I looked at that blade the other night for quite a while. I don't know...but it does look patchy.

Any chance that this might be gray leaf spot? Especially @Lawndad ?

Like I said, I really don't know. Just trying to narrow things down.
[@green is king 01

I didn't think so because gray LS has a more circular distinguished lesion.

 

[Lawndad]

@social port...All I know is, I ordered 2.5 gallons of Serenade today...

I tried that product last year and it was a giant waste of time and money but others swear by it. Some will probably say you need to keep on it for years for it to work. Maybe you will or do have better luck than me with it.

 

[Lawndad]

I located the map I was referring to in my initial post.

http://www.greencastonline.com/tools/pestoutlooks.aspx

Basically, it can be just about anything now.

 

[Delmarva Keith]

I tried that product last year and it was a giant waste of time and money but others swear by it. Some will probably say you need to keep on it for years for it to work. Maybe you will or do have better luck than me with it.

I'm in the same boat. Actually after fighting the fungus battle like Captain Ahab for far too long I've given up on chemical fungus control - huge time and money suck for little return. I'm relying on old fashioned cultural practices: disease resistant cultivars, no fert after March 15, close watch on soil water content and irrigation, judicious landscape pruning for better sun and airflow. A lot less money and trouble and less heartbreak when all the expensive treatments don't pay off 100% anyway.

 

[j4c11]

I just noticed some lesions on these blades of grass. I was wondering if it's Dollar Spot or Brown Patch based on the lesions alone?

Looks like classic brown patch lesions. I'd hit it with some foliar propiconazole and then again every 2 weeks through summer. You can alternate with azoxystrobin. Make no mistake, if you stop while conditions are favorable it will be back with a vengeance.

 

[ForsheeMS]

I had some type of fungus start up early April in my TTTF. Started with the propiconazole immediately and it has cleared up nicely. My plan at this point is the lighter app of propiconazole every two weeks and every fourth app will be Azoxy. We have had a ton of rain so far and our temps have been in the upper 60's for lows and mid 80's for highs. The grass really doesn't get a chance to dry out between the morning dew and evening showers/thunderstorms basically converting my lawn to a giant petri dish. Here's what mine looked like in April.

 

[zeus201]

@social port...All I know is, I ordered 2.5 gallons of Serenade today...

I tried that product last year and it was a giant waste of time and money but others swear by it. Some will probably say you need to keep on it for years for it to work. Maybe you will or do have better luck than me with it.

My experience was the same and I used Serenade, Companion and Actinovate rotation each season for past several years and still eventually struggled with fungal pressure. I'm passing on biological fungus "stuff" this season and have Propiconazole on the ready.

 

[ericgautier]

I tried that product last year and it was a giant waste of time and money but others swear by it. Some will probably say you need to keep on it for years for it to work. Maybe you will or do have better luck than me with it.

My experience was the same and I used Serenade, Companion and Actinovate rotation each season for past several years and still eventually struggled with fungal pressure. I'm passing on biological fungus "stuff" this season and have Propiconazole on the ready.

I'm curious what your rate(s) are and how often you re-apply?

 

[Green]

Does your have the textbook BP "patches"?

No. Any patches I have are red thread.

As far as Serenade, I'm sold on it. I used it last year, but started late. Still, I didn't have huge Brown Patch or Dollar Spot issues like I do every year in the Summer. Also, the one part of the yard I didn't use it on developed a bad outbreak of Rust.

I already used up the remainder I had from last year on the area with the worst red thread.

 

[LawnNerd]

..... We have had a ton of rain so far and our temps have been in the upper 60's for lows and mid 80's for highs. The grass really doesn't get a chance to dry out between the morning dew and evening showers/thunderstorms basically converting my lawn to a giant petri dish.

So True... So True.... I'm too embarrassed to take pictures right now. I don't want a record of all this ugliness I've got going on. :crying:

 

[zeus201]

I tried that product last year and it was a giant waste of time and money but others swear by it. Some will probably say you need to keep on it for years for it to work. Maybe you will or do have better luck than me with it.

My experience was the same and I used Serenade, Companion and Actinovate rotation each season for past several years and still eventually struggled with fungal pressure. I'm passing on biological fungus "stuff" this season and have Propiconazole on the ready.

I'm curious what your rate(s) are and how often you re-apply?

Sorry if I hi-jack:

This was my experience but I'm just choosing to use synthetic once conditions are favorable.

I was following label rate on a weekly cycle which I rotated between Serenade and Companion as they are two different strains of Bacillus...figured diversity is good. Actinovate was monthly because it was expensive. I was also dropping cracked corn monthly as there has been some correlation that naturally occurring fungus on the corn is beneficial (unsure if it worked but at least added to OM).

It became tiring every week applying and Companion smelled like rotting fish guts which wife / kiddos didn't appreciate. Perhaps Iowa summers and constant humidity just was too much as there are many summer nights which never get below 70F. But again, this what I experienced for my turf and someone else may experience different results using bio-fungicides.

 

[kevreh]

I tried that product last year and it was a giant waste of time and money but others swear by it. Some will probably say you need to keep on it for years for it to work. Maybe you will or do have better luck than me with it.

I'm in the same boat. Actually after fighting the fungus battle like Captain Ahab for far too long I've given up on chemical fungus control - huge time and money suck for little return. I'm relying on old fashioned cultural practices: disease resistant cultivars, no fert after March 15, close watch on soil water content and irrigation, judicious landscape pruning for better sun and airflow. A lot less money and trouble and less heartbreak when all the expensive treatments don't pay off 100% anyway.

Just to be fair, Serenade is an organic control, not a chemical/synthetic like Armada, Heritage, Eagle.....to name a few. Those are the ones the pro's rely on.

 

[Gorgonzola17]

Would love to treat my lawn with propiconozole by this weekend but the chance for rain and thunderstorms is so high over the next week. How long should the fungicide sit on the grass blades before rain or irrigating??

 

[kevreh]

My experience was the same and I used Serenade, Companion and Actinovate rotation each season for past several years and still eventually struggled with fungal pressure. I'm passing on biological fungus "stuff" this season and have Propiconazole on the ready.

If your concerned about using too much of the non-organic stuff (propiconazole) make sure you put it down at the lesser, PREVENTATIVE rate.