Quest Products Corporation
23611 Linwood Road
Linwood, Kansas 66052
785-542-2577 Tel: 785-542-2577
Fax: 785-542-2531

How It Works

Reliant Systemic Fungicide


Reliant is the phosphite-based fungicide with the lowest salt index on the market. It contains no sodium, ammonium or aluminum co-products that can harm your plants or the environment. Highly systemic, Reliant quickly and fully translocates to all parts of the plant. This powerful foliar fungicide controls multiple diseases on more than 80 crops. Highly flexible to use, Reliant is a fit for most operations.


Broad-Spectrum Disease Control

Controls Phytophthoraspp, Pythium spp, downy mildew, Anthracnose, black spot or scab, Fusariumspp, fire and bacterial blights and Rhizoctonia diseases.

Widely Used On Multiple Crops

Registered crop uses include: tree fruit and vines, berries, vegetables, potatoes and onions.


Registered For Turf and Ornamental and Forestry Applications

Controls diseases on turfgrass, Christmas trees, bedding plants and greenhouse-grown plants.

Reliant Works in Three Ways:

It’s a fungicide: Kills pathogens on contact, in the soil and on the plant 
It’s a nutrient: Potassium builds plant health 
It’s a stimulant: Increases the plant’s production of phytoalexin antibodies that stimulate the plant’s immune system against disease

It’s Flexible

A “Reduced Risk” pesticide, Reliant has a 4-hour re-entry interval (REI) and a zero-day pre-harvest interval.

It’s Tank-Mix Friendly

Compatible with most pesticides, except certain copper products.

Offers Multiple Foliar Application Methods

Apply Reliant via root drench, root dip, soil incorporation, chemigation (except in California) and by basal bark application.

Perfect for Disease Resistance Programs

Reliant has a unique mode of action, which makes it an ideal fit within resistance management program.

Always read and follow all label directions.

Reliant contains 45.8% mono- and di-potassium salts of phosphorus acid. When applied, Reliant is rapidly absorbed across cell walls. It quickly translocates throughout the entire plant and kills pathogens on contact. Reliant also works as a protectant, making the plant resistant to further disease infection by thickening plant cellular walls to prevent mycelia penetration.

For more information call: 785-542-2577