For a comprehensive description of general seed testing principles, procedures, equipment, and materials please refer to the International Rules for Seed Testing ( ISTA ). Development Tests compare relative performance of two or more designs or the same design from different suppliers. However, with the addition of a " reduce to damage" or" passwithminimummargin" approach, ISTA. Ista seed testing manual pdf. ISTA International Seed Testing Association.
Founded in 1924, with the aim to develop and publish standard procedures in the field of seed testing, ISTA is inextricably linked with the history of seed testing. ISTA tests establish lower limits for packaged- product performance, but in general do not set upper limits. It is important that all the companies where germination tests are conducted are in possession of the latest version of the ISTA rules for reference when performing this test. These standards have been developed for parties that have a working knowledge of seed testing and are familiar with seed testing materials, instruments and equipment. ISTA has two types of tests - Performance Tests result in a Pass/ Fail assessment and are used to determine the viability of a packaged- product to survive normal shipment. Therefore, used in their most straightforward pass/ fail fashion, ISTA tests do little to detect over- packaging situations. Throughout this manual the ISTA rules for seed testing was used as the main source of reference. ISTA® Test Series - Test protocols are also grouped into what ISTA calls a Series.
Featuring 19 sections, the International Rules for Seed Testing have definitions and standardised methods to be used in sampling, testing seed lot quality and reporting results for international trade. The International Rules are ISTA primary tool to promote uniformity in the seed testing industry.