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Companion Biological Fungicide

4 x 5 LB Pail

DPH Biological Fungicide

DPH Biologicals

DPH Biologicals: Companion® Biological Fungicide Wettable Powder


Product Overview:
Companion® Biological Fungicide Wettable Powder is a broad-spectrum, OMRI-listed microbial fungicide formulated with the beneficial bacterium Bacillus amyloliquefaciens (strain D747). It enhances plant health by promoting beneficial microbial activity in the soil and suppressing a wide range of fungal and bacterial diseases. Companion® is effective in preventing and controlling diseases such as Pythium, Rhizoctonia, Fusarium, Phytophthora, and Botrytis.


Key Benefits:

  • Effective Disease Control: Suppresses soil-borne and foliar fungal diseases through competitive exclusion, induced systemic resistance (ISR), and production of antifungal compounds.

  • Enhanced Root Growth: Promotes stronger root development and overall plant vigor.

  • Improves Soil Health: Encourages beneficial microbial activity in the rhizosphere, enhancing nutrient availability and uptake.

  • Residue-Free & OMRI-Listed: Safe for organic and conventional crops without leaving harmful residues.

  • Tank-Mix Compatible: Works well with many conventional and biological crop protection products.

Use Rates:

  • Foliar Application: 0.5 to 1.5 pounds per 100 gallons of water, applied at 7–14 day intervals.

  • Soil Drench/Root Dip: 0.5 to 1.5 pounds per 100 gallons of water, applied to the root zone at planting or transplanting.

  • Seed Treatment: 0.125 - 0.5 oz. per 100 pounds of seed.

Application Restrictions & Safety:

  • Do Not Apply with Strong Chemical Fungicides: Use caution when tank-mixing with copper-based fungicides or other antimicrobial agents that may reduce efficacy.

  • Avoid Extreme pH & High Temperatures: For optimal performance, mix with water at a pH between 5.5 and 7.5.

  • Storage & Handling: Store in a cool, dry place away from direct sunlight. Do not freeze.

  • Worker Safety: Use standard PPE (gloves, mask, and eye protection) when handling. If contact with skin or eyes occurs, rinse thoroughly with water.

Companion® Biological Fungicide Wettable Powder is an excellent tool for integrated disease management (IDM) in both organic and conventional production systems, offering natural, sustainable disease control while improving plant health.

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Arthur Clesen Inc. and Clesen PROturf Solutions is a distributor of commercial fertilizer, chemicals, grass seed, ice, melters, T&O Supplies and Irrigation Components to green industry professionals in Illinois, Indiana, Iowa, Michigan, Minnesota and Wisconsin.

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