Before you plant, apply OMRI listed RootShield WP (Wettable Powder) to protect plant roots from common soil-borne pathogens. RootShield WP is a certified organic soil inoculant that uses the highly-effective hybrid fungus Trichoderma harzianum, Rifai strain KRL-AG2, to kill Pythium, Rhizoctionia, Fusarium, Thielaviopsis and Cylindrocladium species. Reducing stress and increasing root mass results in healthier growth and larger yields. RootShield WP is water soluble and allows for easy mixing and application using a variety of spraying equipment. This makes it ideal for drenches in nurseries and greenhouses.
Using RootShield WP to thoroughly drench the soil protects roots for up to 12 weeks and can cost less than 1 cent per 6" pot when applied properly. Within 24 hours of application, RootShield WP blocks and actively attacks pathogens by releasing enzymes that dissolve the cell wall of pathogens after which the Trichoderma "eats" them. Another benefit of RootShield WP is the 0-hour REI! You will be able to continue your normal work around the growing environment immediately after application.
Shop all BioWorks products here
Suggested Uses: Inoculating seed stock, transplants, bulbs, etc. Perfect for soil drenches when preparing growing beds and media. Can be used in chemigation systems. Safe for use on edible crops and ornamentals.
This Product Controls These Pests or Diseases: Pythium, Rhizoctionia, Fusarium, Thielaviopsis and Cylindrocladium.
Application Rate:
Click Here for application instructions in hydroponic environments and for chemigation applications.
| RootShield WP Application Rates |
| Vegetatively Propagated Crops | For planting or storage, treat at 0.03-3.0 ounces RootShield WP to 100 lbs of bulbs or cut potato seed pieces. Apply to seed pieces or bulbs so surfaces are thoroughly covered with dust. Dip bulbs, tubers, or cut potato seed pieces in a suspension of .25-5.0 lbs of RootShield WP in 5 gallons of water. |
| Cuttings, Bulbs, Bare-Rooted Transplants | Dip cuttings, bulbs, or transplants in RootShield WP dry powder or in a suspension of 0.5-2.5 lbs RootShield WP in 5 gallons of water. Plant treated cuttings, bulbs, or transplants in potting mix or soil in usual manner. |
| Greenhouse Soil Drench | Suspend 3.0 – 5.0 ounces RootShield WP in 100 gallons of water with agitation and apply as a soil drench to greenhouse planting mixes. For seeding flats or shallow (up to 4-inch depth) beds or pots, apply at a rate of 50 - 100 gallons per 800 square feet. For deeper beds or pots, apply at a rate of 100 gallons per 400 square feet, or at the rate of ½ - 1 cup (4 – 8 fl. ounces) per 3" – 6" pots respectively. Apply RootShield WP through low pressure watering nozzles such as fan nozzles or other drench watering systems applied directly to the soil. Constant agitation is required to maintain RootShield WP in suspension. RootShield WP Biological Fungicide can be tank-mixed and is compatible with many commonly used fungicides, liquid fertilizers, herbicides, insecticides and biological control products registered for use on greenhouse/ornamental plants. If tank mixes are desired, observe all directions, precautions and limitations on labeling of all products used. Consult the tank mix compatibility chart on the Product Label for more information. |
| Nursery Soil Drench | Suspend 3.0 – 5.0 ounces of RootShield WP in 100 gallons water with agitation and apply as a soil drench to container nursery crops. Apply RootShield WP through handheld or backpack sprayers. Maintain constant agitation. For shallow pots (up to 4-inch depth), apply at a rate of 50-100 gallons per 800 square feet. For deeper pots, apply at a rate of 100 gallons per 400 square feet, or at the rate of ½ - 1 cup (4 – 8 fl. oz) per pot. |
| In-Furrow Spray or Transplant Starter Solution | Apply as an in-furrow spray or transplant starter solution at a rate of 16.0 – 32.0 ounces per acre in sufficient water to achieve uniform application. Maintain constant agitation. RootShield WP can be tank mixed with certain fertilizers and pesticides; consult tank mix compatibility chart below for detailed information. |
| Tank Mixing | RootShield WP can be tank mixed and is compatible with many commonly used fungicides, liquid fertilizers, herbicides, insecticides and biological control products registered for use on greenhouse/ornamental plants. If tank mixes are desired, observe the most restrictive of labeling limitations and precautions of all products used in mixtures. Consult the tank mix compatibility chart below or the company for more information. This product should not be tank mixed with chemicals that contain the following active ingredients: benomyl, imazilil, propiconazole, tebuconazole, and triflumizole. Do not apply RootShield WP Biological Fungicide immediately before these pesticides are used. |
How To Use: Use as a soil drench for greenhouse planting mixes and container nursery crops. RootShield WP can be applied through low pressure watering nozzles, overhead boom type sprayers or sprinklers and using sub-irrigation or other drench watering systems.
Environment: Outdoors, Crops, Orchards & Vineyards, Nursery, Greenhouse, Grow Room, Hydroponics, Aquaponics, Interiorscapes, Container Plants, Houseplants
Storage: Store in original container. RootShield WP can be refrigerated or frozen to extend shelf life.
2023 RootShield Fall Rebate:
To qualify, purchase any listed product in the promotional period, take receipt through June 15, 2024 and submit your rebate by July 15, 2024.
- Qualifying Products: RootShield WP, RootShield PLUS+ WP brands, RootShield Granules, RootShield PLUS+ Granules
- Program Period: October 1 - December 31, 2023
- Rebate Period: October 2, 2023 - June 15, 2024
- Full Details & Rebate Submission Form
Cannot Be Shipped To: AK
Shipping Restrictions: Cannot ship via USPS.
Warning & Toxicities: Do not inhale. No toxicity known.
Shelf Life: Frozen (under 32°F): 8 months, Refrigerated (below 40°F): 6 months, Room temperature(70-75°F): 4 months, Outdoors (above 75°F): 1 month or less
Active Ingredients/Guaranteed Analysis: Trichoderma harzianum, Rifai strain KRL-AG2....1.15%
Reviews
Write a review
Good product, but I am forced to buy too large quantity
May 1, 2022 | By BRIAN PARK
Owner Response: We also wish the smaller Home & Garden size was still available! The manufacturer is aware and hopefully they will package a better size for those to can't use many pounds in a season.
