Soybean Services
- Soybean Sand Germination Test
- Soybean Warm Germination Test
- Soybean Vigor - Accelerated Aging (AA) Test
- Soybean Vigor - Tray Cold Test
- Soybean Herbicide Traits Test
- Soybean Varietal Purity Tests
- Soybean Purity & Noxious Weed Examinations
- Soybean Tetrazolium Test
- Soybean Seed Count
- Soybean Seed Moisture Test
- Soybean Visual Ratings
- Soybean Soak Test
- Soybean Export Certificates
Soybean Tetrazolium Test

Soybeans showing staining from Tetrazolium testing
Methods
Tetrazolium tests are conducted on a 200 seed sample. Soybean seeds are typically imbibed for 16 hours and then and stained in 1% Tetrazolium solution.
What is Reported
A percentage of viable seed (normal staining embryos and any dormant seeds).
Value of Results
Tetrazolium is a quick estimate of germination and can be useful in determining viability of hard seeds. When seed has a fungal colonization, such as Fusarium or Phomopsis spp., the TZ test will best estimate a treated germination test.
Lab News
See what others are saying about SoDak Labs in this article recently published by Farm Journal.
Agronomically Accurate Seed Testing Results
SoDak Lab's goal is to deliver fast, accurate, and diagnostic seed testing services.