GB6142-2008
Quality grading of the grass seeds
禾本科草种子质量分级
GB 6142-2008 is a current mandatory Chinese national standard for Quality grading of the grass seeds. It appears in the Food compliance cluster with a occupational safety focus and has an implementation date of Jan 1, 2009.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the quality grading of Gramineae grass seeds used in production, sale, and use. It covers a wide range of grass species, including forage and turf grasses. Similar plant species and varieties may also refer to this standard for quality evaluation.
Technical requirements
The standard specifies the quality grading indicators for 63 types of Gramineae grass seeds, categorized into Level 1, Level 2, and Level 3. The grading is based on four primary parameters: purity, germination rate, other plant seed count, and moisture content. A key concept introduced is the seed utilization value, calculated as purity multiplied by germination rate, which is used for comprehensive grading when purity and germination rate fall into different levels. Chapter 6 of this standard is mandatory, explicitly stating that seeds must not contain quarantine weed seeds.
Testing methods
Testing for grading parameters must be conducted in accordance with the GB/T 2930 series standards and the International Seed Testing Rules. This includes procedures for sampling, purity analysis, germination testing, other plant seed count determination, and moisture measurement.
FAQs
What products are regulated under GB 6142-2008?
GB 6142-2008 regulates the quality grading of Gramineae grass seeds involved in production, sales, and usage, covering 63 specific species including forage and turf grasses.
Are there any updates from the previous version of GB 6142?
Yes, compared to GB 6142-1985, this version adds the concept of seed utilization value, modifies grading indicators for 13 species, adds 48 new species, and introduces mandatory requirements in Chapter 6.
How is the final quality grade determined under this standard?
The final grade is based on purity, germination rate, other plant seed count, and moisture. If all four are Level 3 or above but purity and germination rate differ, the seed utilization value is used to replace them for comprehensive grading.
The summary above provides a high-level overview of GB 6142-2008. To ensure complete compliance for your grass seed products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 6142-2008 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Management
- CCS
- B00
- ICS
- 65.020.01
- Competent department
- Ministry of Agriculture and Rural Affairs
- Technical committee
- National Technical Committee on Animal Husbandry of Standardization Administration of China