SAVE MONEY. Fungus control that works! Advice from a GC Superintendent 

Glad you enjoyed it

Really great article. Thanks for sharing it! Will now be trying this synergistic route to battle leaf spot/melting out. Quick question, after applying propicinazole and chlorothalonil together, should that mixture dry on the blade or be watered in immediately? Spray volume would be 1 gallon per 1,000.

Years ago due to the overuse they wanted to limit the amount of chlorothalonil on home lawns do you possible carcinogen concerns, particularly for children. It at the time was the #1 fungicide being and the current labeling reduced that.

@GregPhillips.22 do you think it's really as much of a concern as they make it out to be? We certainly have a lot of kid traffic in our yard but every year I have heavy disease pressure and would love to work something else in aside from the propiconazole and azoxy I've been using

Wow thanks!! Near retirement so wanting to help.

Glad you liked it

What kind of grass do you have?

@@GregPhillips.22 it’s a mixture of TTTF, KBG, and PRG. I live in SE Wisconsin and that blend is very common. I did a partial renovation and converted a 4500 sqft section of my back to Artimuss TTTF. Treatable lawn is close to 25K sqft.

Go by the label. They can vary based on the manufacturer and/or product with the same active ingredient. Some of that depends on the inactive ingredients. Those very by the manufacturer. Some manufacturers have active ingredients that increase the efficiently of the active ingredient. Those can help the product work. What one manufacturer requires may differ from others to get the same performance of the product.

Likely not however, wanted to give folks some options to help with dollar spot. It's very limited what homeowners can do when they get resistance. I know many superintendents with bentgrass courses which is very susceptible to it found dew removal to be an effective way to prevent the disease, lower fungicide costs and applications.

I wound put out the granular out. Water it in then put the foliar at the proper spray volume. I often mixed fungicides together in a spray tank so putting out both is not a problem.

Working on it. Give me a day or two.. this is a bit of a riddle.

Awesome! Thank you. Rick

Thanks!!!

www.cdms.net/ldat/ldANQ004.pdf

www.domyown.com/msds/Artavia_2_SC_Fungicide_Label_2023.pdf

www.greencastonline.com/current-label/heritage

atticusllc.com/wp-content/uploads/2021/06/Stergo-MX-Specimen.pdf

s3-us-west-1.amazonaws.com/agrian-cg-fs1-production/pdfs/CHLOROTHALONIL_720_SFT_Label.pdf

www.domyown.com/msds/Clearys_3336_DG_Lite_Granular_Fungicide_Label_2020.pdf

www.spsonline.com/wp-content/themes/awi/files/imagefield_thumbs/3336.pdf

I have not had to use a surfactant..likely because I go on the high end of spray volumes. It's more of about getting fungicides to the lower canopy than getting it distributed to the plant. Since most fungicides only move upwards in the plant. I don't think you are doing anything wrong with a surfactant. It is just I have not done that. The paint mixer is a good idea. So long as it does not splash. That would be good with wettable powder formulations. Those can be very difficult to properly agitate.

Glad it was helpful! Thanks for the feedback!!

Thanks for the feedback!!

Label says 0.1 to 0.25 inches of water. Need to get it off the leaf blade and into the lower parts of the plant. It only moves upwards in the plant. That is why it needs a light watering in.

Must have not linked here it is and will put it in the general comments too. www.gcsaa.org/docs/default-source/research-and-information/disease/strategies-for-preventing-and-managing-fungicide-resistance.pdf?sfvrsn=2

Michigan state article on the subject archive.lib.msu.edu/tic/golfd/article/2003mar47.pdf

Yep. I am working on a summer program now. This one took a ton of research so tied up my time.

it is. good catch.. Thanks!

@@GregPhillips.22 So I read the research paper you included and I come away w/ the conclusion that the synergism program is only applicable to the Group 3 fungicides. I didn't see anything about Group 1 (Cleary 3336F) which I have learned should be in rotation to prevent resistance. Does Group 1 not have a synergism chemical? (I may have missed something in the vids) Thanks -Edit...so I looked at the label on 3336F and for Dollar Spot the comments included a statement that tank mixing w/ Chlorothalonil can be utilized. It did not provide any different rate for the 3336 and didn't provide a rate for the Chlorothalonil. Should you use it at the at the label rate or is there any synergistic benefit for a lower rate?

@@jcasey460 Chlorothalonil is not labeled for residential lawns anymore for good reason. And the rate suggested in this video is above the max labelled rate. There plenty of other options for a good fungicide control program that don't include the risk. Generally, for a home lawn, unless you have a high maintenance golf course style maintained lawn, dollar spot can usually be controlled with proper watering and nitrogen use. If not a single app of a dmi like propiconazole will take care of it usually, again paired with proper watering and n use. There are also several multi MOA products, or just rotate to a different MOA every app. It doesn't need to be this complicated for a home lawn IMO.

atticusllc.com/wp-content/uploads/2020/08/Gunner-14.3-MEC-Fungicide-Specimen.pdf

I appreciate that!!! There are a lot of folks with good intentions but can get folks into trouble. Feel free to spread the word in your social media. If I can help folks it makes me happy!!!