Lexicon Intrinsic Fungicide.

Lexicon Intrinsic Fungicide gives up to 28 days control against a range of turf diseases. It also has many plant health benefits, and these are one of the reasons as turf agronomists we really like this product. It doesn’t just stop turf disease.

• It has a label for the professional and home garden markets for turf disease control.
• Apart from its broad control spectrum two other reasons to use this are its short re-entry period, and its high level of turf safety. Once it dries your good to go.
• We recommend it to help Manage Disease for out of season events if you plan to cover the surface for a period of time.

Download Lexicon Intrinsic Label

Download Lexicon MSDS

Mode of Action of Lexicon Intrinsic.

• Lexicon has a dual mode of action, and contains Fluxapyroxad (167g/L) and Pyraclostrobin (333 g/L) in a 1:2 ratio.
• Fluxapyroxad is a SDHI (succinate dehydrogenase inhibitor) and in FRAC Group 7. It inhibits fungal respiration at Complex II, and blocks energy production for fungal growth.
• Fluxapyroxad works against several diseases but is excellent against dollar spot. This makes it an ideal rotation option in a resistance program.
• SDHI fungicides are also in Velista Fungicide, Xzemplar, Exteris Stressgard and Posterity.
• Pyraclostrobin is in FRAC Group 11 and is a quinone outside inhibitor-type fungicide.
• Pyraclostrobin stops spore germination and also has some curative effects.
• It stops fungal spore germination, and prevents spores from infecting plant tissue.
• It also has some curative activity as it stops fungal growth and causes it to die.

• Most fungicides, give either a quick knockdown or a long term residual. Lexicon does both of these as it contains two actives.
• Lexicon is very rainfast and tightly binds to the waxy leaf surface. Once it enters the leaf it moves upwards systemically though the xylem to untreated areas.
• This movement, along with its high level of activity, give long-lasting preventative and curative effects.
• This means reliable, and more consistent disease control.
• With the use of spray adjuvants we recommend not to use organosiloxanes as they may cause turf injury (as per the US label).

Buy Lexicon Fungicide.

If you would like to purchase Lexicon Intrinsic Fungicide.

What Turf Professionals Say.

Turf managers and golf course supers across Australia now use this product as the basis for their disease programs. This is especially true in times of high disease pressure or when they prepare for large sports events.

Some have seen much better turf recovery after stress periods when they use Lexion Intrinsic. This recovery has been seen after heavy foot traffic, extreme weather events, or if the surface is under cover for any length of time.

Accounts from greenkeepers at several venues show:

• Faster green-up.
• Denser turf.
• Less disease flare-ups.

Others appreciate its convenience. The dual actives means that it gives an immediate knockdown and a long-lasting residual. This saves time and reduces the need for further sprays.

Several supers have also remarked on the peace of mind that comes when they use Lexicon Intrinsic Fungicide. They are confident that it will protect their turf and continue to perform, even under the most demanding conditions.

For these reasons, it is a highly recommended part of an IPM strategy, whether on golf courses, stadiums, or high-traffic public grounds.

Plant Health Benefits of Lexicon Intrinsic Fungicide.

As well as excellent disease control, Lexicon has turf health benefits that include:

• Increases in photosynthesis.
• Strong root growth.
• The turf copes and recovers from stress better.
• Increases in the rate of couch grass establishment and sod shelf life.
• A better ability to cope in shade.

Diseases Control with Lexicon Intrinsic.

Research in the USA and Australia shows that this fungicide gives excellent control of 27 key cool and warm season turf diseases which include:

• Anthracnose.
• Bentgrass Dead Spot.
• Couchgrass Decline*.
• Brown Patch.
• Brown Ring patch (‘Waitea patch’).
• Dollar Spot.
• Fairy Ring.
• Fusarium patch.
• Gray Leaf Spot.
• Large patch Brown patch of warm season of turf, which includes Zoysia patch.
• Leaf spot Bipolaris, Drechslera, and Exserohilum spp.
• Melting out.
• Necrotic Ring Spot.
• Pythium blight.
• Pythium Root Dysfunction.
• Red thread.
• Rhizoctonia Leaf or Sheath Spot.
• Rust.
• Spring Dead Spot.
• Summer Patch.
• Take-all Patch.
• Yellow Tuft (Downy mildew).

Comparison Table. Lexicon Intrinsic vs Tombstone Duo vs Headway Maxx vs Exteris Stressgard vs Impala.

Lexicon Intrinsic Trials for Disease Control.

• Several trials show that this gives excellent control of a range of diseases. These include Brown Patch, Dollar Spot, Summer Patch and Fairy Ring.
• In a trial on SR7100 colonial bentgrass, there was 0% Brown Patch after 21 days. This is in comparison to the untreated control that has an average 70.5% disease.
• In a trial on “Baron” Tall Fescue, Lexicon shows 1.8% Summer Patch after 21 days. This compares with 58.2% on the untreated control.

Dollar Spot.

Lexicon gives preventive and curative control of Dollar Spot. This is whether the disease is active, or the conditions are right for growth, Fluxapyroxad stops growth when it contacts the fungi.

In the figure below the numbers in brackets denote the number of rating dates out of 13 when Dollar Spot lesions were less than five. Disease breakthroughs with Interface and Headway occur after 28 days.

Applications were made on June 4, July 2 and July 30. Source: Dr. Rick Latin, Purdue University, 2014.

Lexicon Intrinsic for Pythium.

BASF trials show that Lexicon gives better control of Pythium than Azoxystrobin + propiconazole.

Pythium Root Dysfunction (PRD).

• Pyraclostrobin gives better prevention of  Pythium Root Dysfunction in comparison to Azoxystrobin (AzoForce fungicide) and Cyazofamid (Segway Fungicide).
• Azoxystrobin and Cyazofamid give moderate control of PRD in two out of three seasons.
• Propamocarb does not work against PRD.

Pythium Root Rot (PRR).

• Pythium root rot prevention is best when you apply Cyazofamid when soil temperatures reach 24 C. Cyazofamid performs well as a curative application.

Brown Patch on Bent.

Spring Dead Spot (SDS).

Plant Health Benefits.

Turf Quality.

The graph below shows Turf quality readings. The last rating is 28 days after the last application. Lexicon was applied on a 21-day interval on the 5/13, 6/3 and 6/24. Source: Dr. Bruce Martin, Clemson University, 2014.

• In University trials, Lexicon consistently delivers high turf quality, and outperforms other brands. For example, in side-by-side comparisons at the University of Missouri (2014), applications every 14-days gave superior turf quality ratings vs other fungicides.
• These results show the product’s ability to provide strong residual control, and maintain turf health.

Lexicon Intrinsic for Fast Grow in.

• The image below shows couch sprigs that are pre treated with Lexicon on the left, and untreated on the right. The sprigs were first treated 30 days and then 5 days before sprigging. This is worth serious consideration if you have a limited grow in window.
• 2020 work into couch sod shelf-life and transplant success, shows better plant health of transplanted sod and an increase in the establishment speed of couch.

Better Root Growth with Lexicon Intrinsic.

One other health benefit is that it improves root growth on both cool and warm season turf such as bent grass or Buffalo grass.

Improve Turf Growth in Shade.

Research on turf in shade shows that Lexicon improves turf quality.