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California Crop Improvement Association
University of California
California Crop Improvement Association

Seed Laboratory

Section 23. Seed Laboratory

Return to General Standards Table of Contents

The  CCIA maintains a seed testing laboratory to perform quality assurance audits of  seed samples requested from Accredited  seed conditioners and recognized seed testing laboratories (list of labs available at Seed Laboratory Requirements).  The audit testing is performed on reference  samples in order to verify the accuracy of the seed test submitted for  certification. The lab may also provide additional testing services or service  testing for verification of compliance with certification standards, referee  samples, training and education for seed labs.


23.1 Seed Laboratory Staff. The CCIA seed testing laboratory staff consists of an experienced, technically trained, and accredited analyst (CSA and RST) and additional technical staff who work under supervision.


23.2   Certification Seed Testing. Tests  are conducted for purity, germination, varietal identification, or diseases.  Tests are conducted following the AOSA rules of testing and tolerances. The  criteria for seed inspections are defined in the CCIA individual crop standards. Test results  are compared against the Crop Standards to determine if the seed lot meets certification  requirements. Specific additional tests may include:

  1. Presence of California prohibited and/or restricted noxious weed seed.

  2. Varietal  purity may be determined by physical and/or chemical characteristics of the seed.

  3. Disease tests – Ascochyta Blight, Bacterial Fruit Blotch, Rice Blast.


23.3   Reference Samples.

  1. OECD  – the CCIA provides check-testing for purity and germination on at least 5% of  the samples in the OECD seed scheme.

  2. Seed Laboratory Requirements - the CCIA provides  check-testing for purity and germination on at least 10% of the samples  submitted for certification.

Go to Section 24. Seed Laboratory Recognition Program (SLRP)

Updated: December 2010

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