T-22™ HC is a preventative biological fungicide for control of plant diseases. The active ingredient is a microbe, Trichoderma harzianum Strain T-22, which when applied to seeds, transplants or other propagative material, or to soil or planting mixes, grows onto plant roots as they develop and provides protection against plant root pathogens such as Pythium, Rhizoctonia, Fusarium, Cylindrocladium and Thielaviopsis. T-22 HC can be used alone or in conjunction with certain chemical fungicides; consult the T-22 HC compatibility chart for more information.
Where early season seed rot and seedling diseases are expected, use chemically treated seed or other appropriate measures for stand establishment and T-22 HC for root disease control.
Registered for use in California
Application timing
- 01Pre-PlantingApplied
- 02At PlantingApplied
- 03Early Post-Planting
- 04Vegetative Stage
- 05Flowering/Blooming
- 06Fruit Set/Mid-Season
- 07Late-Season
- 08Post-Harvest
Specifications on file
Product details
- General purpose
- Biocontrol
- Product type
- Biopesticides
- Product subtype
- Biofungicide
- Composition type
- Bio-Based substances
- Science/technology
- Biochemical Technology
- Primary compounds
- Trichoderma harzianum, Trichoderma spp.
Crops
- Crop categories
- Broadacre Crops, Horticultural Crops, Permanent Crops, Specialty Crops
- Crops
- Garlic, Leeks, Onions, Corn, Wheat, Sorghum, Cucumbers, Melons, Pumpkins, Squash, Eggplant, Peppers
+ 27 moreShow less
Tomatoes, Arugula, Celery, Lettuce, Spinach, Swiss Chard, Broccoli, Brussels Sprouts, Cabbage, Cauliflower, Collard Greens, Kale, Mustard Greens, Asparagus, Soybeans, Lentils, Peas, Cotton, Canola, Sunflowers, Beets, Sugar Beets, Carrots, Radishes, Potatoes, Sweet Potatoes, Artichokes
Application
- Application method
- Soil Application, Seed Treatment
- Pests/diseases
- Pythium (Damping Off), Pythium spp., Rhizoctonia, Rhizoctonia spp., Fusarium spp., Fusarium virguliforme
+ 1 moreShow less
Fusarium Wilt
Mode and benefits
- Mode of action
- Fungal herbicide
- Suggested benefits
- Plant Performance, Stress Resistance, Disease Resistance
Registration
- Registration
- EPA Registered
- Commercial status
- Commercially Available


