Strobe 2L Fungicide

Strobe 2L Fungicide

Buy 2 or more: $303.07 each

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Product Overview

Strobe 2L is a liquid fungicide that protects turf from a wide range of diseases and fungus species. Great for athletic fields, parks, golf courses, and residential lawns, just fill a sprayer half-full with water, place the product in the sprayer, agitate it to evenly mix the solution, then spray the resulting mixture on the target area. Apply every 10 to 28 days, depending on the disease that is being treated, and the turf will be protected against anthracnose, brown patch, and a number of other diseases.

Features and Specs

Active Ingredient Azoxystrobin 22.9%
Target pests Anthracnose, Brown patch, Fusarium patch, Gray leaf spot, Leaf spot, Pink snow mold, Pythium blight, Spring dead spot, Summer patch, Take-all patch, Zoysia patch
For use in Commercial & Residential: Golf Courses, Lawns and Landscape areas, Parks, Recreation areas and Athletic Fields
Application See Label for Details
Pet safe Yes, if used as directed on Label
Formulation Professional Product
Group 11 Fungicide
VT (Restricted To Licensed Applicators Only)
Shipping Weight 9.70 lbs
Manufacturer Quali-Pro (Mfg. Number: 83100016)
UPC 072693001688
EPA Registration 53883-393



Strobe 2L (azoxystrobin) is a Group 11 fungicide. The mode of action for Strobe 2L is the inhibition of the Qol (quinone outside) site within the electron transport system [Group 11]. Fungal pathogens can develop resistance to products with the same mode of action when used repeatedly. Because resistance development cannot be predicted, use of this product should conform to resistance management strategies established for the crop and use area.

Golf Course Turf & Commercial Turf Farms

Strobe 2L is recommended for control of anthracnose, brown patch, cool weather brown patch (yellow patch), Fusarium patch, gray leaf spot, gray snow mold (Typhula blight), leaf spot, melting out, necrotic ring spot, pink patch, pink snow mold, Pythium blight, Pythium root rot, red thread, Rhizoctonia large patch, southern blight, spring dead spot, summer patch, take-all patch, and Zoysia patch on golf courses, lawns and landscape areas around residential, institutional, public, commercial and industrial buildings, parks, recreational areas and athletic fields.

Application Directions:

Strobe 2L should be applied prior to disease development. Mix Strobe 2L with the required amount of water and apply as a dilute spray application in 2-4 gallons of water per 1000 square feet (87-174 gallons per acre). Repeat applications at specified intervals for as long as required. For spot treatments, use 0.4 fl. oz. Strobe 2L per 1 to 2 gallons of water. Do not apply more than 9.6 quarts an acre per year (7.1 fl. oz. per 1,000 square feet/year). Apply by ground only.


Strobe 2L is recommended for control of certain pathogens causing foliar, aerial, and root diseases, including leaf, tip, and flower blights, leaf spots, downy mildew, powdery mildew, anthracnose, and rusts of ornamental plants. Strobe 2L may be used to control certain diseases of container, bench, flat, plug, bed or field-grown ornamentals in greenhouses, shade-houses, outdoor nurseries, retail nurseries, and other landscape areas.


Apply Strobe 2L as a broadcast or banded spray targeted at the foliage or crown of the plant. Apply to runoff in sufficient water to ensure complete coverage of the target plant. Good coverage and wetting of foliage is necessary for best control. Refer to the label for specific use directions for control of certain diseases. Repeat applications at specified intervals (plus alternations for resistance management) for as long as required. Applications may be made by ground only.

Strobe 2L applications should begin prior to disease development and continue throughout the season at specified intervals following resistance management guidelines. Strobe 2L works best when used as part of a preventative disease management program.

Use only surfactants approved for ornamental plants in combination with Strobe 2L. Do not use silicone based products with Strobe 2L due to possible phytotoxicity. Always test tank-mixes on a small group of representative plants prior to broadscale use.

Apply Strobe 2L at use rates of 1.9 - 7.7 fl. oz./100 gallons (0.95 - 3.85 fl. oz./50 gallons) and every 7-28 days (or as otherwise specified for a specific plant or disease). The addition of a non-silicone based wetter-sticker at the recommended use rate may enhance coverage on hard-to-wet plant foliage.

Under most conditions and for most diseases, apply 3.85 - 7.7 fl. oz./100 gallons (1.9 - 3.85 fl. oz./50 gallons) on a 7-14 day interval.

Under light to moderate disease pressure, use the lower rates (1.9 - 3.85 fl. oz./100 gallons, or 0.95 - 1.9 fl. oz./50 gallons) on a 7-14 day interval or the higher rates (5.75 - 7.7 fl. oz./100 gallons or 2.85 - 3.85 fl. oz./50 gallons) on a 14-28 day interval.

Under environmental conditions which promote severe disease development, use the higher rates (5.75 - 7.7 oz./100 gallons or 2.85 - 3.85 fl. oz./50 gallons) on a 7-14 day interval.

Use of Strobe 2L as a “rescue” (late curative or eradicant) treatment may not always result in satisfactory disease control.

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What is the shelf life on Strobe 2L Fungicide?

This is enough for 5 years of fungicide applications on my yard. I dont want a $500 bottle going bad

If stored in a cool dry area out of direct sunlight,

Strobe 2L will last up to 3 years. 

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A thunderstorm came through 20 minutes after applying Strobe 2L Fungicide and Propiconazole to my lawn, do I need to reapply the Strobe 2L Fungicide? I believe propiconazole is recommended to be watered in.

Application rates applied were 0.77oz Strobe and 2oz Propiconazole in 2.5gal. water per 1000 sq ft.


Per the product label, excessive rainfall could cause a lack of performance. Strobe 2L Fungicide is classified as having a high potential for reaching surface water via runoff for several months or more after application therefore it is recommended applications be done when no rainfall or irrigation is predicted for 48 hours. 

If there was enough rainfall to cause puddling or heavy water runoff, we would recommend doing a repeat application when no rainfall is expected. 


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