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Discussion Starter · #1 ·
Fungicides are used to correct and prevent fungus from damaging turf. There are 2 common rates. Curative: cures a current fungus problem. Preventive: prevents a fungus problem. It is best to only use a fungicide with 1 Mode of Action (MOA)/FRAC Group no more than two consecutive applications. Resistance to fungicide is a real problem and we don't want to add to this problem. Therefore, it is best to combine 2 or more fungicides on a rotation or even in 1 application. This list is for fungicides approved for residential use. There are many other very effective fungicides but they are not labelled for residential use. Always wear protective clothing per the product label.

  • The italics are products which may be available in local home improvement stores.
  • Granular products can be spread using a fertilizer spreader.
  • Fungus in red generally has excellent control, green has good control, blue is ok control, and black is unknown regarding efficacy.
  • The $ sign is for the cost of one bottle of the product and the # sign is for the cost of application per 1000 sq ft based on a 1-5 scale, 1 being the lowest. Cost is based on preventive rate of BP or the most common fungus it treats and the smallest quantity available. Larger quantities are usually much lower #.

Anthracnose (An), Bentgrass Dead Spot (BDS), Bermudagrass Decline (BD), Brown Patch (BP) Brown Ring (BR), Copper Spot (CS), Crown Rot (CR), Dollar Spot (DS), Downy Mildew (DM), Fairy Ring (FR), Fusarium Blight (FB), Fusarium Patch (FP), Gray Leaf Spot (GLS), Gray Snow Mold (GSM), Leaf Blight (LB), Leaf Smuts (LSm), Leaf Spot (LS), Large Patch (LP), Melting Out (MO), Mini Ring (MR), Necrotic Ring Spot (NRS), Pink Patch (PP), Pink Snow Mold (PSM), Powdery Mildew (PM), Pythium Blight (PB), Pythium Damping Off (PDO), Pythium Root Dysfunction (PRD), Pythium Root Rot (PRR), Red Leaf Spot (RLS), Red Thread (RT), Rust (Ru), Septoria Leaf Spot (SLS), Snow Mold (SM), Southern Blight (SB), Spring Dead Spot (SDS), Stripe Smut (SS), Summer Patch (SP), Take-all-patch (TAP), Typhula Blight (TB), Waitea Patch (WP), Yellow Patch (YP), Yellow Tuft (YT), Zonate Leaf Spot (ZLS), Zoysia Patch (ZP)

FRAC Group 1

Thiophanate Methyl - 1
An, BD, BDS, BP, CR, CS, DS, FB, FP, GLS, LB, LS, NRS, PSM, RT, Ru, SDS, SM, SP, SS, TAP, YP, ZP
  • Bonide Infuse Lawn & Landscape (granular) $/####
  • Cleary 3336 DG Lite (granular) $$/###
  • Cleary 3336 EG $$/#
  • Cleary 3336 F $/###
  • OHP 6672 4.5F $$$$/#
  • OHP 6672 50 WP $/##
  • Quali-Pro TM 4.5 $$$$/#
  • Quali-Pro TM 85 WDG $$$/##
  • Scotts Lawn Fungus Control (granular) Discontinued? $/###
  • Transom 4.5F $$$$/#
  • Transom 50 WSB $/##

FRAC Group 3

Myclobutanil - 3
An, BP, CR, CS, DS, FB, FP, GLS, LP, LSm, MO, NRS, PSM, PM, RT, Ru, SDS, SLS, SP, ZLS
  • Eagle 0.62G (granular) $$/#####
  • Eagle 20 EW $/###
  • Ferti-Lome F-Stop (granular & liquid) $/######
  • Ferti-Lome F-Stop RTS $/######
  • Monterey Fungi-Max $/#######
  • Prime Source Myclo 20EW $/###
  • Quali-pro Myclobutanil 20EW T&O $$$/#
  • Spectracide Immunox Multi-Purpose Fungicide for Gardens $/######

Propiconazole - 3
An, BP, CS, CR, DS, FB, FP, GLS, GSM, LP, LS, LSm, MO, NRS, PM, PP, PSM, RT, Ru, SDS, SLS, SP, SS, TAP, YP, ZLS, ZP
  • Banner Maxx II $$$$$/##
  • Bayer Advanced Fungus Control for Lawns (granular & liquid) $/####
  • Black Flag Extreme Insect Plus Fungus (granular & liquid) $/####
  • Bonide Infuse Systemic Disease Control $/#######
  • Dorado Fungicide $$$$/#
  • Martin's Systemic Fungicide RTS $/######
  • Prime Source PPZ 41.8 $$$/#
  • Prime Source Propiconazole 14.3 Select $/##
  • Prophesy 0.72G (granular) $$/#####
  • Quali-pro Propiconazole $/#
  • Spectracide Immunox Fungus Plus Insect $/######

Triadimefon - 3
An, BD, BP, CS, DS, FB, FP, FR, GLS, GSM, LP, LS, MO, PM, PSM, RT, Ru, SB, SP, SS, TAP, TB, ZP
  • Bayleton 50 $$$$/####
  • Bayleton FLO $$$$$$/##

Triticonazole - 3
An, BP, BR, DS, FP, PSM, GSM, LP, LS, NRS, PP, PSM, RLS, RT, Ru, SP, TAP, TB, YP, ZP
  • Trinity $$$/#

FRAC Group 4

Mefenoxam (Metalaxyl) - 4
DM, PB, PRR, YT
  • Prime Source Regulate Select $$$$$/#
  • Quali-pro Mefenoxam 2 AQ $$$/##
  • Subdue GR (granular) $$$/####
  • Subdue MAXX $$$$/##

FRAC Group 7

Fluopyram - 7
DS *controls nematodes
  • Fluopyram 500 SC by Bayer ?/?

Flutolanil - 7
BP, FR, GSM, LP, MR, PP, RT, SB, YP
  • ProStar 70 WG $$$$/#####

Fluxapyroxad - 7
BP, DS, LP, SM, SP
  • Xzemplar $$$$/####

Isofetamid - 7
DS
  • Kabuto Fungicide SC $$$/##

Penthiopyrad - 7
An, BP, DS, GSM, LP, LS, PM, PP, RT, Ru
  • Velista $$$$$/###

FRAC Group 11

Azoxystrobin - 11 (doesn't control dollar spot)
An, BP, FP, FR, GLS, GSM, LS, LP, MO, NRS, PB, PP, PSM, PRR, Ru, RT, SB, SDS, SP, TAP, TB, YP, ZP
  • Azoxy 2SC $$$/##
  • Azoxy 50 WDG $$$$/##
  • Heritage G (granular) $$/#####
  • Scotts DiseaseEX (granular) $/###
  • Strobe 2L $$$$$/#
  • Strobe 50WG $$$$/##

Fluoxastrobin - 11
An, BP, BR, DS, FP, FR, GLS, LS, MO, NRS, PB, PDO, PM, PP, PRD, PRR, PSM, RT, Ru, SB, SDS, SM, SP, TAP, TB, WP, YP, ZP
  • Fame (granular) $$/####
  • Fame SC $$$$$/##

Trifloxystrobin - 11
An, BP, BR, DS, FP, FR, GLS, LS, MO, NRS, PB, PDO, PM, PP, PRD, PRR, PSM, RT, Ru, SB, SDS, SM, SP, TAP, TB, WP, YP, ZP
  • Compass 50 WG $$$$$/###

FRAC Group 21

Cyazofamid - 21
PB, PDO, PRD
  • Segway $$$$$/######

Combination Products
  • Armada 50 WDG: Trifloxystrobin - 11 & Triadimefon - 3 $$$/##
  • Headway G (granular): Azoxystrobin - 11 & Propiconazole - 3 $$/#####
  • Pillar G Intrinsic (granular): Pyraclostrobin - 11 & Triticonazole - 3 $$/#####
  • Quali-pro Strobe Pro G (granular): Azoxystrobin - 11 & Propiconazole - 3 $$/#####
  • Exteris Stressguard: Fluopyram - 7 & Trifloxystrobin - 11 $$$$$/##

Organic & Alternative Fungicides
  • Actinovate SP - OMRI listed (Bacteria)
  • Bonide Liquid Copper Fungicide
  • Bonide Neem Oil
  • Bonide Orchard Spray (Sulfur)
  • Double Nickel 55 - OMRI listed (Bacteria)
  • Double Nickel LC - OMRI listed (Bacteria)
  • Dr. Earth Final Stop - OMRI listed (Oil)
  • EcoVia 3in1 -OMRI listed (Oil)
  • Monterey Complete Disease Control - OMRI listed (Bacteria)
  • Monterey Consan 20
  • Natria Disease Control for Lawns (Bacteria)
  • Organocide 3in1 Garden Spray (Oil)
  • Rhapsody by Bayer (Bacteria)
  • SePRO Camelot O - OMRI listed (Copper)
  • Southern Ag Garden Friendly Fungicide - OMRI listed (Bacteria)
  • ZeroTol 2.0 - OMRI listed

Edit:
The 2020 Rutger Chemical Control publication is now available. It is great resource for how to treat most fungus.
 

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Discussion Starter · #2 ·
Sample preventive fungicide program with 4 MOA:
Azoxystrobin 28 days
Propiconazole 14 days (labelled for 21 days but that didn't work for me)
Thiophanate-methyl 14 days
Flutolanil 14 days

3 MOA:
Azoxystrobin 28 days
Propiconazole 14 days
Thiophanate-methyl 14 days
 

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Turfguy93 said:
Make sure the product you're using is labeled effective for the disease you're trying to prevent/treat.
I know I tried to use the Scott's Fungus Control to cure rust fungus last year, which doesn't work (it doesn't state rust in the description). This year I used the Scott's Disease Ex and haven't had a rust problem (does list rust). Would be good to list what they do or don't prevent. Thanks for doing this.
 

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NC State TurfFiles is kinda my go-to for treatment effectiveness. I know there are lots of others... https://www.turffiles.ncsu.edu/diseases-in-turf/
 

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This is great. We needed this. I'm going to link it to the Cool Season Guide for future reference. :thumbup:

Myclobutanil is sold as Spectracide Immunox Multi-Purpose Fungicide for Gardens Spray Concentrate (1.5% ai) at Lowes. It says garden in the tittle but it does have the lawn rate/directions in the label.
 

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Discussion Starter · #13 ·
Killsocket said:
This is awesome info. Thanks! Can I borrow it for my lawn journal?
I just got done with an Eagle 20/Scott's Disease Ex/Eagle 20 treatment. First time using fungicides and just amazed how well my lawn is now!
Enjoy! For all to share!
 

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Discussion Starter · #14 ·
g-man said:
This is great. We needed this. I'm going to link it to the Cool Season Guide for future reference. :thumbup:

Myclobutanil is sold as Spectracide Immunox Multi-Purpose Fungicide for Gardens Spray Concentrate (1.5% ai) at Lowes. It says garden in the tittle but it does have the lawn rate/directions in the label.
Thanks. Added.
 

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What do you mean by Mode of Action - is that the group number? So like don't put any Group 3 down more than twice in a row?

And is the concept behind a granular that it penetrate the soil (so applying dry is fine) or do you want it to stick to the grass blades? (apply when grass is wet) Or does it depend on if it's curative or preventative?
 

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Discussion Starter · #16 ·
MOA is how the fungicide attacks the fungus. It could be through respiration, sterol biosynthesis in membranes, or many other ways. All the listed ones in the OP are only 1 MOA each. There are fungicides which attack through multiple MOA. It is easier for a fungus to become resistant if the same MOA is utilized over and over. The fungus will mutate and now be resistant to that fungicide. If you use 2 MOA or more, the fungus has to go through multiple mutations, which is much less likely to occur.

Fungicides are classified by group. In the OP, there are 2 with the same group, therefore they attack using the same MOA. It wouldn't be good to rotate thoes 2 because they use the same MOA.

Ideally, you would use at least 2 groups each time and rotate with another set of 2 different groups. The problem is the high cost and the limited number of available fungicides for residential use. The combination fungicides is an offer by manufacturers for ease of use. You can always buy the separate fugicides and mix them yourself.

The granular is just an easy application for the homeowner. Like applying granular fertilizer. It usually costs more though compared to concentrates. Not everyone is comfortable with spraying. The granular does take a little longer since it has to be absorbed through the roots and needs to be watered in. The sprays will attack the fungus directly on the leaf as well as be absorbed through the roots. Faster acting.

Curative is usually just a higher rate to have a better chance of success. Preventive is usually about half the rate and for longer periods. It is easier to kill a little bit of fungus (preventive) than an infestation (curative).
 

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Discussion Starter · #18 ·
Killsocket said:
Is it considered group 3 and group 11 are the best combo's? Or can you mix and match any different group number? I just am not sure.
You can mix any of them! Some don't cover specific fungus so 3 and 11 are a good mix to get wide coverage. There are other mixes, even up to 4 but they aren't labeled for residential.
 

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What about the other fungicides with similar chemistries? Such as other --conazoles. What was it...tebuconazole or something? I couldn't use the mention function from the tablet. Are they not labeled for residential use anywhere?
 

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Discussion Starter · #20 ·
Green said:
What about the other fungicides with similar chemistries? Such as other --conazoles. What was it...tebuconazole or something? I couldn't use the mention function from the tablet. Are they not labeled for residential use anywhere?
I didn't find any tebuconazole labeled for residential. Did you? It is a group 3 so with two choices already...
 
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