MYKOS® Gold Optimum  

Highly Concentrated Granular Mycorrhizal Inoculant 1,400 Propagules / Gram


In healthy soil, there are millions of mycorrhizal fungal hyphal filaments present helping a plant's root system with the uptake of essential nutrients and water. However, most soils have been depleted of these super fungi. MYKOS GOLD OPTIMUM allows for the reestablishment of mycorrhizal fungi in your soil to help maximize yields, product quality, and ensure a healthy and biodiverse soil.


MYKOS GOLD OPTIMUM is a special blend of MYKOS GOLD granular mycorrhizal inoculant and MYKOS GEL in-vitro grown arbuscular mycorrhizal fungi. Providing a stronger biological connection between roots and nutrients present in the soil while using less granular inoculant. MYKOS GOLD OPTIMUM granular has been specially formulated to provide maximum benefits to agricultural and horticultural crops. 

Benefits of MYKOS Gold Optimum


  • Single application

  • Naturally occurring

  • Produce more vigorous & healthy plants

  • Improved plant establishment

  • Greater tolerance to environmental stresses

  • Higher long-term yield

Unit Size 
5 lbs / 2.27 kg


Multi Specie

Endo Mycorrhizae

Rhizophagus Intraradices

1,400 propagules / gram 

Directions and Applications 

Mycorrhizal inoculants must be applied on or near newly developing

roots. The use of chemical based fungicides in combination with this

product is not recommended. MYKOS applied at higher rates will

increase colonization of crops. 


Nursery ApplicationsSowing or propagating medium: thoroughly mix 2.5 lbs to 5 lbs per yard.

Transplant potting medium: Incorporate at a rate of 2.5 lbs to 5 lbs per yard.

Individual plant treatment: Place 6 ml or 1/4 of a teaspoon below the transplanted plug. 


Seedbeds: Apply and incorporate into the root zones at a rate of 0.5 to 1 lbs per sq ft of new seed beds just prior to or during sowing. 

Vegetable Transplants & Direct Seeding: Onions, peppers, tomatoes, cucurbits: Sidedress or incorporate into seedbeds at a rate of 2.5 lbs to 5 lbs per acre. 

Field Crops: Corn, soybeans, cereals: Apply 2.5 - 5 lbs per acre. Apply through seed drill, side-dress or broadcast, and disc into root zone prior to sowing. 

Forage, cover and legume crops: Mix with seed and incorporate into seed drill at 2.5 lbs to 5 lbs per acre or broadcast and incorporate with disc or harrow at the same rate prior to seeding. 

Caution: Store under cool dry conditions. Do not expose inoculants to direct sunlight for extended periods of time. Always wear a dust mask when handling. 

For more information concerning distribution, placing an order, product questions/applications, and field trials contact us at 1-800-784-4769.


5355 Monterey Frontage Rd 

Gilroy, CA, 95020


© 2020 RTI Ag - All Rights Reserved.