The primary reason for fungicide rotation is to minimize resistance. Essentially, fungicide rotation involves alternating products that have different modes of action so that you avoid back-to-back treatments with any one site-specific fungicide.
In this video I rotate between 2 of the mostly commonly used fungicides. Firstly, I use Azoxystrobin to target some broader range fungus. Secondly, I use Propiconazole 14.3 to target the dollar spot. I routinely have issues with dollar spot. Therefore, I recommend rotating these two fungicides.
The dollar spot was unaffected by the DiseaseEX because the active ingredient does not target it. As a result, the Propiconazole cleared it up within one week.
DiseaseEx (Azoxystrobin)
Here is some information from their web site:
- Fungicide offers a formula to cover a wide range of problem lawn diseases. This new product is fast acting and continues to control lawns diseases for up to 4 weeks. Scotts® DiseaseEx™ controls common diseases like: Brown Patch, Stem & Stripe Rust, Red Thread, Powdery Mildew, Pythium, Southern & Typhula Blight, Pink Patch, Nercrotic Ring Spot, Summer Patch, Yellow Patch and more.
- Treats up to 5,000 sq ft per bag.
I chose to use DiseaseEx because I purchased it at a relatively low price, there are many other options out there that include Azoxystrobin as the active ingredient.
Propiconazole
Here is some information from their web site:
- Propiconazole 14.3 Fungicide is a broad spectrum fungus and disease control product that systemically kills a range of diseases and protect a variety of flowers, cool and warm season grasses, shrubs, and trees. The microemulsion formulation helps the product stay mixed once it is placed in a sprayer, produces less of an odor, and efficiently covers a lot of foliage. Controlling diseases for 7 days to an entire season, depending on the disease or fungus, the product is a great fungicide to mix with other products, to control a wider range of diseases.
In conclusion, there are a variety of products on the market today. These two mentioned are readily available online or at the big box stores.
Check out my blog for more videos on maintaining a Bermuda lawn.
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