Sample Sizes Required for Tests
Sampling is an extremely important part of seed testing that can often be overlooked. Seed growers, producers, and conditioners need to pay attention to how samples are taken when submitting them for testing. The most important factor in sampling is obtaining a sample that is representative of the field or seed lot. This can be done in a number of different ways. Probing bags or bins is one way. Usually, several probes are taken and then bulked into a single sample. A portion of this sample can then be submitted for testing. A convenient way to sample is to periodically draw a sample at regular intervals as the seed is going into or out of a bin. These samples can be bulked and mixed together in the same manner as probed samples. Growers should also keep a reference sample on hand as a backup sample. The importance of having a representative sample to submit for testing cannot be over emphasized. A seed test is only as good as the quality of the sample submitted. In fact, the accuracy of some seed health tests is highly dependent upon the sample submitted.
Seed Health Tests
Herbicide Trait/Transgenic Tests
Genetic Purity/Variety Identification
The minimum size of samples submitted for a germination test shall be at least 800 seed.
Seed Purity Tests