Speed is no Substitute for Quality Test Results

What do you think about when I mention quality test results? Some might say they would like to see very high test scores, such as 99% germination results, while others could be looking for the opposite, very low test results such as 0% contamination of weed species in their seed lot. I would propose that what we all should want and strive for is an accurate test result. A result that accurately reflects the true quality of the seed lot being analyzed.

Quality test results begin with good clear seed sampling procedures. If the method of sample collection does not adequately represent the entire seed lot, then it will not reveal the actual quality of the entire seed lot.

Once the seed sample has been obtained and submitted to the seed lab, it is then the lab’s responsibility to use good analytical principles to determine the quality parameters that are important to the seed producer or customer. The sample must be handled with care, not exposed to any mechanical damage or environmentally deteriorative conditions.

Using a mechanical seed divider, the sample is separated into a working subsample. The subsample will then be subjected to the various analytical tests requested by the seed producer.

Each test has specific procedures that must be followed to ensure accuracy and repeatability of the assay. Deviations from the specified test requirements, such as the temperature or humidity in the germination chamber, may create fluctuating test conditions which will likely cause inconsistency in the assay and ultimately inaccuracies of test results.

All contributing factors for the variability of test conditions must be identified and minimized as much as possible to ensure that a seed quality analysis provides accurate data.

Some seed testing analysts tout how quickly they can initiate a germination test or analyze a sample. I would submit that the more important factor is not speed but is the accuracy and consistency of the process. It will not do the seed producer much good to receive a QA test result within seven days if the results are off by 10%. Bad, inaccurate data received quickly is still inaccurate data and will give the producer a false understanding of the true quality of their seed lots.