Stargus® Biofungicide - Treat and Control Downy Mildew and Botrytis

Stargus Biofungicide

Control diseases longer with extended action. Provides broad spectrum disease control on challenging diseases such as downy mildew, BotrytisFusarium and more. Re-apply 2-4 times at 7-10 day intervals for extended efficacy throughout the season. Multiple modes of action make it a great resistance management tool.

Product Features:

  • MRL-exempt: No residue to worry about
  • Flexible labor scheduling: 0-Day PHI and 4 hour REI
  • Easy to tank mix
  • Minimal PPE

APPLICATION: Foliar (Aerial or Ground), Chemigation, Soil Treatment, Backpack/Hand Sprayer
ACTIVE INGREDIENT: Bacillus amyloliquefaciens F727

Stargus® Biofungicide to control downy mildew

Crops & Diseases

Stargus biofungicide is approved to control downy mildew, Botrytis and other fungal and bacterial diseases in a large number of commercial specialty crops.

How your crops benefit from Stargus

Stargus's unique mode of action brings a sustainable option to help simplify and extend your IPM program.

Boost yield with biopesticides

Boost yield & quality

Control downy mildew to increase marketable yield for top profit on every acre

Manage resistance with biopesticides

Manage resistance

Simple IPM option gives peace of mind of sustainable disease management and resistance prevention

Harvest flexibility with biopesticides

Harvest flexibility

Can be used right before harvest without concern for residues

Worker friendly biopesticides


Helps simplify your labor scheduling and avoids costly downtime

Want to learn more? Download the Stargus Product Brochure.

Mode of Action

Stargus’ simple IPM option gives peace of mind of sustainable disease management and resistance prevention.

The Stargus mode of action to control downy mildew, Botrytis and a broad range of diseases is two-fold:

  • Once applied, Stargus actively acts as a plant-growth promoting microbe, stimulating plant defenses, and
  • Stargus colonizes the plant tissue to out-compete pathogenic organisms trying to gain a foothold

Stargus Efficacy

Stargus biofungicide performed similarly to most standard materials to control downy mildew and other fungal diseases.


“Stargus biofungicide is an excellent rotational partner. The broad spectrum fungicide increases marketable yield in a number of key crops such as leafy greens, apples, grapes, cane berries, fruiting vegetables, cucurbits and more. This MRL-Exempt product is recognized in university trial data for controlling foliar and soil borne diseases such as downy mildew in lettuce, Botrytis in grapes, and Fusarium in celery.”
~ André Trépanier, Director of Marketing

Art of Use

The following best use practices should be kept in mind to effectively use Stargus Biofungicide:

Disease Amount Application
Botrytis 2-4 quarts/acre Foliar
Downy mildew 2-4 quarts/acre Foliar
Fusarium 3-4 quarts/acre Soil
White mold 2-4 quarts/acre Foliar
Sustainable Ag 10 | MBI

Where to Find Stargus Biofungicide

We have a professional sales and technical support team and maintain a robust distributor network. To purchase or for a list of distributors in your area, connect with a Marrone rep today!

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