C5 Tundrabac®
Cold-Tolerant Root and Soil Performance for Stronger Crops
Powered by the patented Bacillus atrophaeus ABi05 strain, this innovative soil biostimulant delivers measurable plant and soil benefits at temperatures as low as 8°C, allowing growers to support crop establishment earlier in the season than conventional Bacillus products. Once applied, the bacteria colonize developing roots and release compounds that stimulate plant growth, mobilize nutrients and improve root development. The result is enhanced nutrient and water uptake, improved stress tolerance and stronger crop performance under challenging growing conditions.
Product Facts
Active Ingredient
Bacillus atrophaeus ABi05
Formulation Type
Suspension Concentrate and Dry Formulations
Concentration
2.5 × 10¹⁰ CFU/mL
Standard Dosage
0.5 – 2 L/ha depending on crop and application method
Crops
Vegetables, Potatoes, Ornamentals, Berries, Fruit Trees, Soybean, Wheat, Barley, Rye, Sugar Beet, Corn, Buckwheat, Sunflower, Rice and Other Crops
Shelf Life
2 Years
Pack Size
1 L, 5 L
SDS
Tech
Sheet
Product
Label
Application Guidelines
0.5 - 2 L/ha depending on crop, application method and production system. Seed treatment rates range from 0.2 - 0.5 L/100 kg seed.
Apply at planting, transplanting or early crop establishment. Additional applications may be used depending on crop requirements.
Apply early in the growing season when root establishment and soil microbial activity are most critical.
Can be applied as a seed treatment, drench, dipping treatment, in-furrow application or hydroponic treatment depending on crop requirements.
Compatible with many crop nutrition and biological programs. Conduct a compatibility test before tank mixing.
No residue concerns when used according to label recommendations.
Key Product Benefits
Remains active at soil temperatures as low as 8°C, supporting early-season crop establishment.
Colonizes developing roots and stimulates vigorous root development for improved crop performance.
Mobilizes nutrients and enhances nutrient absorption to support stronger growth and higher yields.
Helps plants tolerate drought, salinity, temperature fluctuations and other abiotic stresses.
Suitable for seed treatment, drench, in-furrow, hydroponic and transplant applications across a wide range of crops.
Enhances soil microbial activity and supports healthier root development for improved root-zone performance.
Plant Health Benefits
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Disclaimer
Performance information for C5 Tundrabac® is based on internal trials, field observations and/or publicly available data. Results may vary depending on local crop management, soil type and weather conditions. Always read and follow label directions.
© 2026 Andermatt Group. C5 Tundrabac® is a registered trademark of Andermatt Group.