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ISTA Working Programme 2007 - 2010
This document presents the approved Working Programme and Membership of the ISTA Technical Committees (TCOMs) 2007 - 2010. Working programmes are developed by the committees for the three year period between two ISTA Congresses and are approved by the ISTA Executive Committee. |
ISTA Seed Mixture Experiment
The current ISTA Rules do not cover seed mixtures and the issuance of ISTA Certificates is limited to lots of one variety or species. The ISTA Bulking and Sampling, Purity and Germination Committees in conjunction with the Statistics Committee were requested by the ISTA Executive Committee to establish sampling and testing rules for mixtures.
Mixture seed lots are expected to be more heterogeneous than seed lots of one variety/species of seed. This is assumed in particular to be true for chaffy herbage seed mixtures and mixtures of flower or wild species with a high number of components of very different seed flowing properties. However, we do not know by how far the variation in mixture lots exceeds the variation presently accepted by the ISTA Rules. Because the answer to this question will not only affect the representativeness of the submitted sample for the average quality of the lot, but also the representativeness of the test results for an individual container in the lot, it is necessary to attain experience and to collect data on this key aspect.
ISTA is initiating an experiment to collect information that may be used to determine the reliability of seed mixture test results and establish tolerances. Any accredited ISTA laboratory can take part in this experiment. Laboratories taking part in the experiment should follow the protocol given in: Technical protocol for the ISTA Experiment on Sampling and Testing Seed Mixtures and they are should submit the data obtained to the ISTA Secretariat on the ISTA Experiment for sampling and testing seed mixtures: Report Form.
Although data from germination and other seed determination tests on mixtures is not required for analysis, procedures for these tests are given in the protocol for the guidance of those who test mixtures for these quality attributes.
Since the representativeness of the samples of mixtures is unknown, ISTA Certificates cannot be issued and the issue of ISTA Certificates is not included as part of this experiment.
To register for participation in the experiment or to obtain further information or clarification, please contact the ISTA Secretariat at tcom(at)ista.ch.
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| Participants register for the ISTA Seed Mixture Experiment |
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Latest issue of SEED TESTING INTERNATIONAL
(ISTA News Bulletin) No. 138 October 2009 for available download
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PRESS RELEASE
World food security: urgent measures on seed needed
...read more about the outcome of the
Second World Seed Conference 2009
held September 8-10,
in Rome, Italy
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REGISTER ONLINE NOW
29th ISTA Congress 2010 (June 15-22)
Profit from the reduced fee for early registrations until Feburary 28, 2010
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REPORTS
ISTA Annual Meeting June 15-18, 2009 Glattbrugg, Switzerland
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Newly adopted:
Position Paper on ISTA's view regarding the units for the reporting of quantitative results on presence of seeds with specified traits in conventional seed lots
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ISTA Seed Mixture Experiment
ISTA is initiating an experiment to collect information that may be used to determine the reliability of seed mixture test results and establish tolerances.
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Universal List of Species
ISTA has published a list of 130 plant species that accredited laboratories may wish to include in their seed collections
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Accreditation Documents for the Testing of Specified Traits
Related Documents for download
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ISTA / ISF Experiment on Herbage Seed Lot Size
The ISTA / ISF Experiment on Herbage Seed Lot Size
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ISTA signs Memorandum of Understanding with FAO
Read the full Press Release
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