Mentor EC

Syngenta · Propiconazole · EPA Reg 100-1562 · Fungicide ✓ Last verified 2026-05-30

Free practice questions on this product's label, use, and safety.

Key facts From the EPA

Registration, signal word, restricted-use status and approved use sites are sourced from the U.S. EPA pesticide registry. EPA Reg. No. 100-1562. View this product's label on the EPA ↗ (EPA copy accepted September 30, 2020)

Active ingredient Propiconazole

Manufacturer Syngenta

EPA registration 100-1562

Category Fungicide

Application method Spray

Safety & handling WARNING

According to the label From the product label

These application details were read from this product's label by our system to help you in the field. The label is the law — always confirm rates, sites and restrictions against the actual product label before mixing or applying. View the full label →

Mentor EC is a Group 3 fungicide containing 9.7% propiconazole (0.88 lb per gallon). It is designed for the post-harvest control of certain diseases in citrus, stone fruit, and tomato crops. It can be applied via in-line dip/drench or as an in-line aqueous or fruit-coating spray application. For citrus, it targets green mold, blue mold, and sour rot. For stone fruit, it targets blue rot, brown rot, green mold, and sour rot. For tomatoes, it targets black mold and sour rot. When used as a dip/drench, specific rates apply based on the target disease and crop. When used as a spray, rates are based on the weight of the fruit. Always ensure the solution remains in suspension through continuous agitation. Note that Mentor EC is toxic to fish and shrimp; do not apply directly to water or areas where surface water is present. Avoid mixing with oxidizing agents. Use appropriate PPE, including long-sleeved shirts, long pants, chemical-resistant gloves, and shoes.

Application rates & sites 12

Target pest	Indoor / Outdoor	Where on site	Rate	Dilution	Notes
Green mold (Penicillium spp.)	Outdoor	Citrus Fruit, Crop Group 10-10	32-64 fl oz per 100 gallons		In-line dip/drench
Blue mold (Penicillium spp.)	Outdoor	Citrus Fruit, Crop Group 10-10	32-64 fl oz per 100 gallons		In-line dip/drench
Sour rot (Geotrichum candidum)	Outdoor	Citrus Fruit, Crop Group 10-10	0.11-0.22 lb ai/100 gallons		In-line dip/drench
Green mold (Penicillium spp.)	Outdoor	Citrus Fruit, Crop Group 10-10	32-64 fl oz / 50,000 lb of fruit per 50,000 lb fruit	0.055-0.44 lb ai/250,000 lb of fruit	In-line aqueous or fruit-coating spray application
Blue rot (Penicillium spp.)	Outdoor	Stone Fruit, Crop Group 12-12	8-16 fl oz per 100 gallons		In-line dip/drench
Brown rot (Monilinia spp.)	Outdoor	Stone Fruit, Crop Group 12-12	8-16 fl oz per 100 gallons		In-line dip/drench
Green mold (Penicillium spp.)	Outdoor	Stone Fruit, Crop Group 12-12	8-16 fl oz per 100 gallons		In-line dip/drench
Sour rot (Geotrichum candidum)	Outdoor	Stone Fruit, Crop Group 12-12	8-16 fl oz per 100 gallons		In-line dip/drench
Black mold (Alternaria alternata)	Outdoor	Tomato	16-32 fl oz per 100 gallons		In-line dip/drench
Sour rot (Geotrichum candidum)	Outdoor	Tomato	0.11-0.22 lb ai/100 gallons		In-line dip/drench
Black mold (Alternaria alternata)	Outdoor	Tomato	16-32 fl oz / 50,000 lb of fruit per 50,000 lb fruit	0.11-0.22 lb ai/50,000 lb of fruit	High-Volume (Dilute-Spray) Application
Sour rot (Geotrichum candidum)	Outdoor	Tomato	16-32 fl oz / 50,000 lb of fruit per 50,000 lb fruit	0.11-0.22 lb ai/50,000 lb of fruit	High-Volume (Dilute-Spray) Application

Mixing & dilution 1

For	Where	Amount	Per	Finished strength	Notes
General		1/2	required amount of water/wax/oil emulsion		Mentor EC Alone

PPE required Long-sleeved shirt and long pants; Chemical-resistant gloves made of waterproof material; Shoes plus socks.

Timing & weather

Post-harvest use.

Use restrictions 7

Do not mix or allow to come in contact with oxidizing agents in a final concentration of Mentor EC greater than 10% (v/v).
Do not apply directly to water or to areas where surface water is present, or to interstitial areas below the mean high water mark.
Do not contaminate water when cleaning equipment or disposing of equipment wastewater or rinse.
Maximum Single Application Rate: 64 fl oz (0.44 lb ai) of propiconazole.
Maximum Annual Rate: 128 fl oz (DO NOT exceed 0.88 lb ai of propiconazole-containing products).
For citrus: Make no more than two post-harvest applications.
For stone fruit: Make no more than one post-harvest application.

Documents

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