Custom GP Trichoderma Application Instructions

Custom GP

Trichoderma Application Instructions

Custom GP Trichoderma Application, by Custom Biologicals, Inc. can be applied as a seed inoculant, root treatment, or as a folliar application.

Custom GP Trichoderma Blend

Trichoderma Application

Custom GP Application

Custom GP is a highly concentrated liquid, containing billions of beneficial Trichoderma fungi. Four different species of beneficial Trichoderma fungi are contained in Custom GP. It has been scientifically formulated for use as either as a root treatment for new crops or for newly transplanted crops.

Custom GP comes in two sizes; 50ml and 1 Liter. The 50 ml size treats up to 2.5 acres (1 Hectare) and the 1 Liter size treats up to 50 acres (20 Hectares).

Trichoderma Application

First, calculate the area to be covered.

Then, calculate the amount of water needed to completely cover the area to be applied.

Finally, calculate the amount of Custom GP required.

Make sure and properly take care of any unused Custom GP. This means resealing the container and placing the unused amount in a refrigerator. DO NOT FREEZE.

Make sure Custom GP is thoroughly mixed into the water. Use only non-chlorinated water. Custom GP can be applied with fertilizers and pesticides.

Custom GP CANNOT be used with most fungicides.

Custom GP can be applied as a root drip or in furrow or with the use of a broadcast sprayer or airplane. Make sure Custom GP covers the entire area that need to be treated. For specific crop recommendations, contact Custom Biologicals.

Custom GP as a Seed Inoculant

Custom GP is a planter box treatment that can be applied directly before planting. Make sure Custom GP is thoroughly mixed into the seeds.

Contact Custom Biologicals for additional information about how to apply Custom GP.

Custom Biologicals manufactures a wide variety of biofertilizers, soil probiotics, and soil amendments. Contact Custom at or via phone at (561) 797-3008.


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  1. Diane M Taylor says:

    what strains of trichoderma are used?

    are there applications of trichoderma that also include broad species of mycorrhiza?

    1. MrBill says:

      Diane: We use 4 species of Trichoderma. T. harzianium, T. viride, T. koningii, T. polysporum. Here’s a link. Click Here

      We don’t work with mycorrhiza.

  2. Odozie Augustine says:

    We intend to distribute your product exclusively in Nigeria. We want organic fertilizers that is suitable for tropical agriculture. Can you send us samples of your organic product for test this planting season with direction on the usage? Preferably in sarchet form that can be mixed with water here on arrival.
    Odozie Augustine

  3. tboone7282 says:

    I want to use Custom GP as a root dip for my transplants into my garden (tomatoes, peppers, eggplant, cabbage, etc.) How much do I mix with a gallon of water, please? Your application instructions are very vague. Thank you.

    1. MrBill says:

      Hi. Custom GP used as a root dip will work great with transplants. Custom GP when used in this manner will reduce plant transplantation loss.

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