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Preventative fungicide app... every 14 or 30 days?

1617 Views 51 Replies 12 Participants Last post by  tgreen, 
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I'm curious what everyone is doing. The last 2 seasons I rotated my fungicides every 30 days, thinking I may try every 14 days this season. Thoughts?
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M
Just follow the manufactures directions. For the particular fungus. IIRC the stuff im using so 3 applications then change it up
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G
My question is really more about how often to put down fungicides in general. I'm following a rotation plan, but I'm considering putting down the "preventative" rate every 14 days instead of 30 for whatever fungicide I'm using. Thanks
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Glen_Cove_5511 said:
My question is really more about how often to put down fungicides in general. I'm following a rotation plan, but I'm considering putting down the "preventative" rate every 14 days instead of 30 for whatever fungicide I'm using. Thanks
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More or more often doesn’t make it better whatever you are using it has directions I would just follow them for fungicide if the directions say, put it down every 14 days as a preventative application then you do that and then you follow the directions for how much and how many times
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M
Just adding this
Im using eagle 20ew
The list of lawn fungus treatment for what I think I have shows 1-2.5oz/1000ft2 mixed with enough water to cover the 1000 ft2
I use 2 gallons of water and just keep making passes.
It notes for preventive application use lower end of listed dose for active use higher dose.
The 3 fungus I think I ID’d are all 14 day applications with a not of no more than 3 then change up the product.

fungicide because of its frequent application rate can get expensive.

im looking to the weather to gauge my preventive plan.

I also tweeked my feeding program , No nitrogen from this point on unless its a micro dose with hose end sprayer

my issue last 2 seasons seems to be my application of a feed and herbicide in one product. After learning more I figured out that product was putting down close to 1lb N in mid june.
This year its just grub control no fert.

this fall/winter I am going to lean more on how to prevent fungus.
Right now im focused on weeds
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Old Hickory
MacLawn said:
im looking to the weather to gauge my preventive plan.
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Be careful. Some of these fungi work pretty quickly. A preventative plan applies the manufacturer's recommendation which for most fungicides is 14 days and 28 days for azoxy. I could be off on some as there are many but that's for the 4 MOA's that I rotate. @440mag has a tried and true plan going as far as 21 days of preventative applications. But you'll need to see what he does to accomplish that.
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M
2
I was upset to see this in my lawn this morning. I was in no mood to go get my camera so these are generic internet pics but this is what I had this AM? It has has not even been hot yet.
Plant Grass Terrestrial plant Groundcover Soil

Terrestrial plant Plant Grass Groundcover Evergreen
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L
What exactly do you mean by rotating every 30 days. As others have mentioned it depends on the product and the disease in regards to application interval. For example Axozystrobin will provide 28 for most diseases, while Propiconizole will only last for 14 days. You can apply a different FRAC of fungicide anytime afterwards it is just economical for a preventative fungicide program to wait the recommended intervals. It is fine to apply different fungicide every 14 days. You can do weekly fungicides applications if you wish, you can even mix two or more fungicides in one application.
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Lawn Whisperer said:
What exactly do you mean by rotating every 30 days. As others have mentioned it depends on the product and the disease in regards to application interval. For example Axozystrobin will provide 28 for most diseases, while Propiconizole will only last for 14 days. You can apply a different FRAC of fungicide anytime afterwards it is just economical for a preventative fungicide program to wait the recommended intervals. It is fine to apply different fungicide every 14 days. You can do weekly fungicides applications if you wish, you can even mix two or more fungicides in one application.
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You're right, I've been reading up and adjusting my application plan based on the fungicide and disease I'm trying to prevent.
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Glen_Cove_5511 said:
You're right, I've been reading up and adjusting my application plan based on the fungicide and disease I'm trying to prevent.
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Do you have fungus issues already?
I cant believe what im seeing in my lawn. I can only imagine what the hot humid months will bring.
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JustAnotherLawnGuy
MacLawn said:
I was upset to see this in my lawn this morning. I was in no mood to go get my camera so these are generic internet pics but this is what I had this AM? It has has not even been hot yet. View attachment 15508
View attachment 15509
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I have a similar thing on my lawn over the last few days.. What exactly is this.. and how to treat this?
Thanks
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G
MacLawn said:
Do you have fungus issues already?
I cant believe what im seeing in my lawn. I can only imagine what the hot humid months will bring.
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No. The last two seasons I was hit pretty bad. I've never really had a set fungicide program. I'm trying to get ahead of it this year.
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JustAnotherLawnGuy said:
I have a similar thing on my lawn over the last few days.. What exactly is this.. and how to treat this?
Thanks
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What exactly?
Glen_Cove_5511 said:
No. The last two seasons I was hit pretty bad. I've never really had a set fungicide program. I'm trying to get ahead of it this year.
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After last year and this is early break out looks like I am on the same track.
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JustAnotherLawnGuy
MacLawn said:
What exactly?
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I was seeing white web like spots on my lawn, as you had in your image. It however turned out to be not a fungus issue but just cotton seed. Here is the discussion about it.

www.thelawnforum.com

Is this lawn fungus? How do I treat it?

Over the last few days I am seeing this white web like spots over my lawn. I am not sure if this is fungus. Anyone knows? and what can I do about it? Thanks
www.thelawnforum.com www.thelawnforum.com
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MacLawn said:
fungicide because of its frequent application rate can get expensive.
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+1. I have been lax on fungicide because of cost and lack of knowledge. I am educating myself and applying a risk based approach by monitoring conditions closer to limit cost.
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T
Glen_Cove_5511 said:
I'm curious what everyone is doing. The last 2 seasons I rotated my fungicides every 30 days, thinking I may try every 14 days this season. Thoughts?
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What grass type(s) do you have and what disease are you targeting. For example, if you have tall fescue you're probably targeting brown patch. If so, I would do: azoxstrobin at 28 day rate, followed by azoxystrobin at 28 day rate, followed by azoxystrobin at 28 day rate.
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Jeff_MI84
JustAnotherLawnGuy said:
I was seeing white web like spots on my lawn, as you had in your image. It however turned out to be not a fungus issue but just cotton seed. Here is the discussion about it.

www.thelawnforum.com

Is this lawn fungus? How do I treat it?

Over the last few days I am seeing this white web like spots over my lawn. I am not sure if this is fungus. Anyone knows? and what can I do about it? Thanks
www.thelawnforum.com www.thelawnforum.com
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The other night while feeling the lawn after a mow, I saw white spots and panicked a bit. Grabbed my flashlight and realized it was just spider webs (viewed pictures on the forum to be sure). Funny how mycelium and spider webs can look similar without closer inspection.
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GCoco
Mycelium will only appear with dew. When dew dries it disappears.
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G
tgreen said:
What grass type(s) do you have and what disease are you targeting. For example, if you have tall fescue you're probably targeting brown patch. If so, I would do: azoxstrobin at 28 day rate, followed by azoxystrobin at 28 day rate, followed by azoxystrobin at 28 day rate.
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I have a TTTF/KBG mix. Brown patch for sure and dollar spot. So you're suggesting to do one preventative app of azoxy every 28 days... no other fungicides?
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ionicatoms
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Glen_Cove_5511 said:
So you're suggesting to do one preventative app of azoxy every 28 days... no other fungicides?
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Don’t do that. Get one or two other modes of action going. Follow this standard recipe.

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