What is a Vigour Test?

What is a vigour test?

A vigour test reveals a seed lot’s ability to withstand a variety of different stress factors. 

Vigour tests are designed to mimic poor seeding conditions to find out how the seed lot will perform under stress. It’s the exact opposite of a germination test, where seed is grown under optimum conditions.

What is a Germination Test?

A germination test determines the maximum germination potential, or viability, of the seed.

Why do a Germination Test?

The germination rate of a particular seed lot is a key indicator as to how that seed will perform in the field.

What is a Tetrazolium Chloride Test?

The Tetrazolium Chloride (TZ) test is often called the quick germination test. It’s a chemical test used to determine seed viability, and results are usually available within 24 to 48 hours.

How is the TZ Test Different From a Germination Test?

The TZ test can give you an early and quick snapshot of seed viability but is not a replacement for the more comprehensive seed germination test.

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