ProForce Envixa Duo Fungicide.

ProForce Envixa Duo is a two-active systemic turf fungicide from Indigo Specialty Products. Each litre contains 120 g azoxystrobin (FRAC Group 11) and 200 g tebuconazole (FRAC Group 3). It is registered for six turf diseases: fairy ring, dollar spot, Helminthosporium diseases, anthracnose, winter fusarium and brown patch, on golf greens, tees and fairways, bowling greens, sportsfields and racetracks.

Indigo released it on 7 October 2026. The 1 L pack is in stock now and the 2.5 L pack follows later in October. Gilba Solutions supplies it alongside the rest of the ProForce turf chemical range, and as independent turf agronomists we can tell you where it fits in your disease program and where it does not.

If you have used Quali-Pro Evolution, the formulation will look familiar. Envixa Duo carries the same two actives at the same concentrations and lists the same six diseases. The label rates, restraints and buffer zones on this page are taken from the Envixa Duo label, so read that label, not another product’s, before you spray.

Envixa Duo Key Facts.

Envixa Duo Label, SDS and Technical Guide.

Download the Envixa Duo label and leaflet (PDF)
Download the Envixa Duo Safety Data Sheet (PDF)
Download the Envixa Duo Technical Guide (PDF)

Diseases Controlled by Envixa Duo.

The label splits the six diseases into two groups with different rates, water volumes and timing. Five are leaf and crown diseases, sprayed onto the foliage at 2–3 L/ha. Fairy ring is a soil problem, so it gets a higher rate, about twice the water and an irrigation wash-in to move the product down to the thatch and soil where the fungus lives.

Use the higher rate and the shorter interval when weather favours disease. The dollar spot fungus was moved out of Sclerotinia into the new genus Clarireedia in 2018; the label still uses the old name, which is why you will see both in the literature.

How Envixa Duo Works.

Tebuconazole is a Group 3 DMI (demethylation inhibitor). It blocks a step in ergosterol production, and without ergosterol the fungus cannot build a working cell membrane. It is taken up by roots and leaves and moves upward in the xylem. Indigo describes its activity as curative, protective and eradicant.

Azoxystrobin is a Group 11 QoI (quinone outside inhibitor) strobilurin. It binds to the Qo site of Complex III in the fungal mitochondria and shuts down energy production, so spores fail to germinate and infection stops. It also moves upward through the plant and across the leaf blade. Azoxystrobin works best before infection, which is why the label frames leaf and crown use as a preventative program.

Two modes of action in one drum does not remove resistance risk. FRAC rates Group 11 strobilurins as high resistance risk and Group 3 DMIs as medium risk, and the label caps use at two consecutive sprays and three per season for that reason. Check where your other products sit in our fungicide mode of action table, and see preventative versus curative fungicides for timing.

How to Apply Envixa Duo.

Leaf and Crown Diseases.

For dollar spot, Helminthosporium, anthracnose, winter fusarium and brown patch, the target is the leaf and the crown. The label’s ideal water volume is 350–500 L/ha, through medium nozzles (XR TeeJet 11004 or 11005) or coarse nozzles (Turbo TeeJet or AIXR 11004 or 11005) at 5 km/h and 3 bar. Spray on a 21–28 day interval as part of a season-long preventative program.

Watch the water volume on longer turf. The label warns that at a cut of 15 mm or more the upper leaves shield the crowns, and low water volumes then leave the crown, where anthracnose and Helminthosporium do their damage, under-dosed. On sportsfields and fairways cut above 15 mm, stay at the top of the 350–500 L/ha range.

Fairy Ring.

Fairy ring fungi live in the thatch and upper soil, so a foliar spray that stays on the leaf misses them. The label directs about 1,000 L/ha of water through very coarse nozzles (Turbo FloodJet TF5 or TurfJet TTJ10), ideally onto wet or dewy turf, then 6–10 mm of irrigation starting within one hour of spraying. If you spray at a lower water volume, start the wash-in as soon as you finish.

Timing on the label is specific. On areas where fairy ring has occurred before, apply the low rate (3 L/ha) from the end of October to early November, before the soil dries out, and reapply after 30 days if needed. Where symptoms are already showing, use the high rate (4 L/ha) and reapply 30 days later.

Restraints That Catch People Out.

No backpack spraying. The label prohibits spraying equipment carried on the back of the user. Bowling clubs and small sites that spot-treat with a knapsack need another method, such as a hose-reel hand wand or a boom.

No home lawns. Envixa Duo cannot be used on home lawns or any other residential turf.

No irrigation injection. It cannot be applied through an irrigation system, an ultra-low-volume system or by air.

Rain and wind. Do not spray if rain is expected within 48 hours. Spray only when the wind is between 3 and 20 km/h, never in a surface temperature inversion, and with droplets no smaller than MEDIUM from a boom.

Buffers. Boom sprays carry mandatory downwind buffers of 20 m to natural aquatic areas and 60 m to native vegetation. The product is very toxic to aquatic life, which matters on courses with lakes and creeks running through play.

Apples. The label warns that Envixa Duo is extremely phytotoxic to some apple varieties. Keep drift off apple trees, and do not use a sprayer that has applied Envixa Duo to spray apple trees. The label notes that even trace amounts can cause unacceptable damage.

Grazing. Do not graze treated areas or feed clippings to animals, including poultry.

Rotating Envixa Duo with Other Fungicides.

The label allows no more than two consecutive sprays before you rotate to a fungicide with a different mode of action, and no more than three sprays per season. Because Envixa Duo carries both Group 3 and Group 11, a true rotation means a product that contains neither group.

That rules out several products turf managers often treat as alternatives. Tombstone Duo is also Group 3 + 11. Azo-Force 250SC is Group 11, and Regiment 550EC is Group 3. Following Envixa Duo with any of these is not a change of mode of action. Products outside both groups include the Group 7 SDHIs such as Xzemplar and Posterity, the multi-site Group M5 chlorothalonil (Squadron Weatherace) and the Group 2 dicarboximide iprodione (Voltar 500SC). Check each label for the diseases you are targeting before you build the program. See our guide to combination fungicides for more on pairing chemistry.

Envixa Duo FAQs.

What is in ProForce Envixa Duo?

Envixa Duo contains 200 g/L tebuconazole, a Group 3 DMI fungicide, and 120 g/L azoxystrobin, a Group 11 strobilurin. Both actives are systemic and move upward through the plant after uptake by roots and leaves.

What is the Envixa Duo rate per 100 m²?

For dollar spot, Helminthosporium diseases, anthracnose, winter fusarium and brown patch the label rate is 2–3 L/ha, which is 20–30 mL per 100 m². For fairy ring it is 3–4 L/ha, which is 30–40 mL per 100 m². These figures are product, not spray water.

When should I apply Envixa Duo for fairy ring?

On areas with a history of fairy ring, apply 3 L/ha from the end of October to early November, before dry conditions, and reapply after 30 days if needed. If symptoms are already present, apply 4 L/ha and reapply 30 days later. Use about 1,000 L/ha of water and irrigate with 6–10 mm within one hour.

How many times can I spray Envixa Duo in a season?

No more than three times per season, and no more than two sprays in a row before you rotate to a fungicide with a different mode of action. The limit applies to the product, so fairy ring and leaf disease sprays on the same area count towards the same three.

What should I rotate with Envixa Duo?

Rotate to a fungicide that contains neither Group 3 nor Group 11. Tombstone Duo (Group 3 + 11), Azo-Force 250SC (Group 11) and Regiment 550EC (Group 3) do not count as a rotation. Group 7, Group M5 and Group 2 products do, provided their labels cover the disease you are targeting.

Can I use Envixa Duo on my home lawn?

No. The label prohibits use on home lawns and any other residential turf. Envixa Duo is registered for golf courses, bowling greens, sportsfields and racetracks.

Is Envixa Duo the same as Quali-Pro Evolution?

Both contain 120 g/L azoxystrobin and 200 g/L tebuconazole and list the same six turf diseases. They are separately registered products, so follow the Envixa Duo label for rates, restraints and buffer zones.

Buy Envixa Duo.

Gilba Solutions supplies ProForce Envixa Duo in 1 L packs now, with 2.5 L packs from late October 2026. Call Jerry on 0499 975 819 or email [email protected] for pricing and delivery.

If you are not sure whether Envixa Duo is the right fit, send us a photo and a description of the problem. A correct diagnosis comes before the fungicide, and our agronomic services cover disease identification and full program design. For the rest of the range, see our turf chemicals page and our guide to choosing a turf fungicide.

All rates, restraints and buffer zones on this page are summarised from the registered ProForce Envixa Duo label (APVMA approval 96899/153290). Always read and follow the label before use; the label takes precedence over anything on this page.