Rosetta ST combines two synergistic endophytes that fix nitrogen and increase phosphorus mobilization. These microbes were discovered in nature, living inside of trees growing in nutrient poor conditions.

This unique combination of nitrogen fixing and phosphorus mobilizing microbes contributes to plant health, yield, and overall crop productivity. Without sufficient phosphorus, plants are limited in their ability to use nitrogen efficiently.

Product Compatibility

Rosetta ST is compatible with current chemical and nutrient seed treatments, ensuring that concentrates do not come into contact prior or during treatment.

Key Crops

  • Corn
  • Small grains
  • Soy
  • Canola


  • Nitrogen fixation: Fixes nitrogen directly from the air into the plant’s internal tissues, while also increasing nitrogen metabolism and utilization within the plant. A patented endophyte strain also synergistically increases nitrogen fixation activity in other microbes.
  • Phosphorus use efficiency: Mobilizes insoluble forms of phosphorus in the soil, while also increasing phosphorus mobility and utilization within the plant.
  • Increases yield potential: Improved nutrient uptake increases overall plant health and stress tolerance.
  • Enhances early development: Improves germination, early emergence, and plant establishment.
  • Root development: Helps plants optimize and establish root systems, which allows the plant to better mine and absorb nutrients from soil. The endophytes increase production of root exudates for greater uptake of macronutrients and micronutrients important for plant health.
  • Stress tolerance: Helps plants regulate water balance and water use efficiency, as well as salinity and temperature tolerance.

Recommended application rates

(fl oz/100 lbs of seed)
(ml/kg of seed)
Corn 4.0 to 8.0 2.6 to 5.2
Wheat 0.75 to 1.0 0.5 to 0.65
Soybean 1.75 to 3.5 1.14 to 2.30
Canola 8 to 15 5.2 to 9.8

Pack size

Liquid formulation, 1.8 gallons (15 lbs) / 7.1 liters (7.1 kg)

Rosetta ST Label
Rosetta ST Product Safety Sheet