International Certificates are generally used where seed is being exported, or where a customer requests such a certificate. The Department of Agriculture's Seed Testing Laboratory is accredited to issue International Certificates on behalf of the International Seed Testing Association (ISTA).
Our laboratory is accredited to test the following species:
|Brassica napus var. napobrassica|
The Moisture Test
Object of the test
The object is to determine the moisture content of seeds by an oven method for routine use.
Our laboratory follows International Seed Testing Association rules for moisture testing. The method used is the constant oven method. All samples are tested in duplicate and the average of the two in tolerance duplicates are reported. It is vitally important that any sample submitted for moisture testing is submitted in a moisture proof container.
Moisture tests are normally given priority and a result is usually available within 2 working days of receipt.
The report issued states the percentage moisture found in the submitted sample.
The Fluorescence Test
Object of the test
To distinguish between Lolium multiflorum (Italian ryegrass) and Lolium perenne ( perennial ryegrass).
Seeds are germinated upright in paper towelling so that their roots are clearly visible. In most varieties of Lolium multiflorum the root traces of the majority of the seedlings show fluorescence under ultra-violet light, whereas in most varieties of Lolium perenne the root traces of the majority of the seedlings do not show fluorescence. The fluorescence test alone, however, is not always a sufficient basis for the identification of a species or a cultivar, because many of the varieties grown contain a certain number of plants which do not give a typical reaction for that species
The test time is 14 days from initiation of the test.
States the number of seeds which fluoresced.
1000 Seed Weight
The 1000 seed weight test is intended to determine the weight of 1000 pure seeds from the submitted sample.