BotryStop WP Fungicide - 12lb - OMRI Listed

BotryStop WP Biological Fungicide - 12lb OMRI Listed - Ulocladium oudemansii for Botrytis Control

BotryStop WP is a biological fungicide developed specifically to protect blossoms, fruit, and plant tissue from Botrytis cinerea and related destructive fungal pathogens. The active ingredient, Ulocladium oudemansii strain U3, is a naturally occurring fungal biocontrol agent that colonizes plant surfaces and competes with Botrytis for infection sites - suppressing disease establishment before it can develop. Approved for organic use and OMRI Listed, BotryStop WP provides a biological Botrytis management option that can be integrated into conventional or organic fungicide rotation programs. Controls Botrytis cinerea (gray mold), Sclerotinia sclerotiorum (white mold / stem rot), and Monilinia spp. (brown rot). REI: 4 hours. Signal Word: Warning.

Key Features & Benefits

• Specific Botrytis Protection: Developed specifically to address Botrytis cinerea - the most economically damaging fungal pathogen in greenhouse, berry, and ornamental production. Protects blossoms, fruit, and plant tissue at the highest-risk infection points.
• Biological Mode of Action - Ulocladium oudemansii: Naturally occurring fungal biocontrol agent that occupies infection sites on plant surfaces, competitively displacing Botrytis before it can establish - a biological mode of action that supports resistance management programs.
• Controls Multiple Pathogens: Suppresses Botrytis cinerea, Sclerotinia sclerotiorum, and Monilinia spp. - covers the key necrotrophic fungi that cause gray mold, white mold, and brown rot.
• OMRI Listed - Organic Use: Approved for use in certified organic production under National Organic Program standards.
• Resistance Management Tool: Biological mode of action makes BotryStop WP an excellent rotation partner for conventional fungicides targeting Botrytis - helps prevent development of fungicide resistance in gray mold populations.

Who Should Use This

BotryStop WP is designed for greenhouse producers, berry growers, ornamental producers, and any operation managing Botrytis pressure in high-humidity environments where gray mold is a persistent challenge. Particularly valuable for cut flower, strawberry, grape, and high-value vegetable programs where Botrytis resistance to conventional fungicide chemistry is a documented concern. Also suited for organic producers who need a OMRI-listed biological tool for Botrytis management.

Compatibility

Active Ingredient: Ulocladium oudemansii strain U3. Application rate varies by method - see product label for specific rates and timing by crop and disease pressure. REI: 4 hours. Signal Word: Warning. OMRI Listed. For best results, begin applications preventively before Botrytis conditions develop. Avoid tank mixing with fungicides that have broad antimicrobial activity that may reduce viability of the biocontrol organism. Always read and follow the product label before use.

Frequently Asked Questions

How does BotryStop WP work against Botrytis?

BotryStop WP contains Ulocladium oudemansii - a naturally occurring fungal biocontrol agent that colonizes wound sites, senescing tissue, and blossom surfaces before Botrytis can infect. By occupying these infection-prone sites, it prevents Botrytis spores from establishing and developing into active infections.

Should BotryStop WP be applied preventively or curatively?

BotryStop WP works best as a preventive application - applied before Botrytis infection occurs to colonize vulnerable plant surfaces. Begin applications prior to conditions favorable for Botrytis (cool, humid weather; dense canopies) and continue on a regular schedule throughout the risk period.

Is BotryStop WP approved for organic production?

Yes. BotryStop WP is OMRI Listed for use in certified organic production under National Organic Program standards. Confirm with your certifying organization before use.

What other diseases does BotryStop WP control besides Botrytis?

In addition to Botrytis cinerea (gray mold), BotryStop WP controls Sclerotinia sclerotiorum (white mold/stem rot) and Monilinia spp. (brown rot). See the product label for the complete labeled disease list.