RootShield Plus WP Biological Fungicide - 1 Lb.

Bioworks Inc.

RootShield Plus Wettable Powder Biological Fungicide 

RootShield WP Biological Fungicide is a preventative biological fungicide for control of plant diseases. The active ingredients are the Trichoderma harzianum and Trichoderma virens strains, 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. RootShield can be used alone or in conjunction with certain chemical fungicides; consult RootShield compatibility chart, tank mix compatibility charts listed in product label below. RootShield WP becomes active in soil or on plants when temperatures are above 50 degrees Fahrenheit and is not effective while temperatures remain cold. This biological fungicide is for use in soil applications (drench, in soil furrow, potting soil, broadcast) in or on all raw agricultural commodities, food and fiber crops. It is also for use in soil applications (drench, in soil furrow, and potting soil) on ornamentals, landscape plants, and ornamental trees including tree seedlings for transplanting into the forest.

Greenhouse and Field Chemigation: Suspend 3.0 - 8.0 ounces RootShield WP in 100 gallons of water with agitation and apply through the following systems: 1) pressurized drench (flood) or drip (trickle) systems, 2) furrow, 3) micro-irrigation such as spaghetti-tube or individual tube irrigation, 4) hand-held calibrated irrigation equipment such as the hand-held want with injector, and 5) ebb and flow systems. Do not apply this product through any other type of irrigation system.
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/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 for detailed information.
Nursery Soil Drench: Suspend 3.0 - 8.0 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 1/2 - 1 cup (4 - 8 fl.oz) per pot.
For all other directions on usage, please see product label below.

Active Ingredients:
Trichoderma harzianum - 1.15 %
Trichoderma virens - 0.61%

Product Label

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Based on 4 reviews Average Rating 4.50 stars out of 5
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  • S
    Susan Casey S. C. Susan C.

    Haven't received it yet.

    Still waiting

  • A
    Alan Fisher A. F. Alan F.

    Rootshield plus

    Seed world has the best price on the Internet and ships promptly. I order a pound every late winter to minimize ground fungus on my dahlias. I start around 600 tubers and plants, treat them in mid May, and then give a second treatment 8 weeks later to last for the season. Before Rootshield, I would lose around 30 percent of the plants to ground fungus. Now my losses are more like 5 percent. Keep the product in the refrigerator for a shelf life of 6 months or in the freezer for 12 months.

  • T
    Tulio Pineda T. P. Tulio P.


    Good service

  • P
    Penny Molina P. M. Penny M.


    Sadly, I did not know it needed to be refrigerated. So probably killed. EXPENSIVE mistake. Which the outside of the package had been marked NEEDS REFRIGERATION. =(

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