Propiconazole

Whether you are trying to sell your house or you want to impress the neighbors, nothing beats a fine lawn. However aside from weeds and lawn pests, there are also fungus and diseases that a landscaper has to worry about. Frustrating lawn diseases like brown patch can be unsightly and if nothing is done about it, it can start to spread. This is where a powerful fungicide active ingredient like Propiconazole comes in handy.

On this page, we will touch on some background information on propiconazole, a popular active ingredient that is featured on some of our top recommended fungicides. We will cover its origin and why it works so well to eliminate fungi and disease. Here you can also shop the top-recommended fungicide products we have that contain Propiconazole.

What is Propiconazole?

Propiconazole, first registered by the US EPA in 1981, is a triazole fungicide used to control lawn diseases and fungi. It is a systemic fungicide, so it will be absorbed into treated plants to prevent diseases as well as treat ongoing infections. Propiconazole is used in a number of different popular fungicide products to control fungi, bacteria, and viruses affecting plants.

Propiconazole in its physical form is an odorless, yellowish clear powder. It comes in a variety of different formulations such as emulsifiable concentrate, flowable concentrate, ready-to-use liquid, liquid soluble concentrate, wettable powder, and dust.

How Does Propiconazole Work?

Mode of Action

Propiconazole affects the cell walls of the fungi which slows down or stops the fungal growth. Products using Propiconazole interfere with the synthesis of ergosterol in plant life, ergosterol being a molecule essential to the formation of fungus. As a result, the formation of fungus is slowed and eventually stopped.

Because of this unique mode of action Propiconazole is considered to be fungistatic or growth-inhibiting rather than fungicidal or fungus killing.

After application, propiconazole will absorb into treated plants and will work to fight or prevent disease for up to 30 days. 

Benefits of Propiconazole

Propiconazole is versatile in what it can do. It can be used as a curative of lawn diseases or preventative. It works systemically, absorbing into the target plant to protect it against diseases, prevent further spread or can eliminate the disease entirely depending on the severity level.

Use Propiconazole outdoors on turf and ornamental plants to control many different species of fungi and diseases like Brown Patch, Gray Leaf Spot and Powdery Mildew.

Drawbacks of Propiconazole

Propiconazole is helpful against diseases but only at the proper rates. If too much active ingredient is absorbed into the plant, it can cause phytotoxicity, poisoning the plant. Some plants are sensitive to the active ingredient so be sure to read the label before application.

Do not use propiconazole in greenhouses or apply directly to water or on top of snow. You should also not apply the active ingredient to African violets, begonias, Boston fern, geraniums or fruit trees. Also, do not apply more than 16 oz. of Propiconazole per 1000 sq. ft. per calendar year to a treatment area.

Is Propiconazole Safe?

Propiconazole is safe to apply when applied according to label directions. Make sure to wear the proper safety gear and equipment when handling this product, you will have nothing to worry about when applying it to your lawns.

How to Use Propiconazole

If you are looking for a powerful fungicide to treat or prevent lawn diseases and fungi, then we recommend you use a product like Patch Pro. Patch Pro is a systemic fungicide concentrate made with 14.3% propiconazole. It's best to use products like Patch Pro before disease has established itself, but you can also use them to treat active infections.

Depending on the disease you are treating for, you will mix 0.5 to 4 ounces of Patch Pro in 1 gallon of water to treat 1,000 square feet. For most general prevention treatments, we recommend using 1 ounce of Patch Pro per 1,000 square feet. Be sure to read the label to get the exact amount you need. Propiconazole must be applied at the proper labeled rates in order treat or prevent diseases. If not mixed properly, it may cause phytotoxicity, poisoning affected plants.

Once your solution is mixed, apply it over affected areas, broadcast it over your lawn, or spray it over your ornamental shrubbery and foliage. Be sure to spray underneath the leaves as well. When dealing with an active lawn disease, we recommend you make a follow-up application 14 to 21 days after your initial application. You should see a noticeable improvement in your plants health after 2 weeks. When Patch Pro is used to prevent diseases and fungi, it will absorb into treated plants and protect them for up to 30 days.

What To Expect

Propiconazole has a residual effect of up to 30 days after application. Spray monthly for preventative control of listed diseases but do not apply more than 16 oz. per 1000 sq. ft. per calendar year. Depending on the targeted disease, there should see a noticeable improvement in your plant's health in one to three weeks. Read the label and reapply when needed to keep the area healthy and disease-free.

It is recommended to water in Propiconazole product applications afterward to help the active ingredient get down into the root system of the plant needing treatment for best results.

Featured Products

Patch Pro Fungicide -  Patch Pro Fungicide is a systemic fungicide that contains the active ingredient propiconazole and is designed to get rid of a broad spectrum of harmful and unsightly diseases on plants and lawns. Patch Pro controls many fungi and diseases such as brown patch, powdery mildew, and blight.