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Primo R1

Super concentrated soybean inoculant

A soybean plant needs 5lbs of nitrogen per bushel. Using an inoculant helps your plants build a larger “nitrogen engine” to support greater yield potential.

Primo R1 is a super concentrated soybean inoculant that helps provide soybean plants with the levels of nitrogen it needs.


• Greater than 2.6M Colony Forming Units per seed

• Multiple Strains for more consistent performance

• Up to 2X the amount of rhizobia per seed than competition

• Single bladder product for more convenient handling

• Only a 0.625 fl. oz./140k seeds (1.25 fl oz per cwt) application rate


• Offered in 40 or 500 unit bladder sizes for traditional application

• Offered in 200 or 800 unit bladder sizes that are compatible with FlexConnect

• Using Primo R1 coupled with FlexConnect gains operational efficiencies and agronomic benefits by providing consistent, high-quality inoculant on every seed

Related Products

Application Guidelines Legend
  • Ask a Specialist

    Ask a Specialist

  • Broadcast


  • Fertigation


  • Foliar


  • In-Furrow


  • Inoculant


  • Post-harvest


  • Seed Treatments & Inoculants

    Seed Treatments & Inoculants

  • FlexConnect® is the first closed transfer system for soybean inoculants that rises to the advancements in application equipment.

    • Ask a Specialist
    • Seed Treatments & Inoculants
    Learn More

  • Primo Power, a higher-concentration liquid seed inoculant for peanuts, is designed to maximize plant growth with specially selected strains of rhizobia.

    • Seed Treatments & Inoculants
    Learn More

  • Primo GX2 is an in-furrow, multi-action granular inoculant that brings more nitrogen to the plant and performs well in harsh planting conditions.

    • Seed Treatments & Inoculants
    Learn More

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