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GB 6142-2008: Quality grading of the grass seeds
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GB 6142: Historical versions
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| GB 6142-2008 | 229 |
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Quality grading of the grass seeds
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| GB 6142-1985 | 199 |
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Qualities grading of main cultivated grasses seeds
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Basic data
Standard ID: GB 6142-2008 (GB6142-2008)
Description (Translated English): Quality grading of the grass seeds
Sector / Industry: National Standard
Classification of Chinese Standard: B00
Classification of International Standard: 65.020.01
Word Count Estimation: 10,139
Date of Issue: 2008-06-27
Date of Implementation: 2009-01-01
Older Standard (superseded by this standard): GB 6142-1985
Quoted Standard: GB/T 2930.1; GB/T 2930.2; GB/T 2930.3; GB/T 2930.4; GB/T 2930.8
Regulation (derived from): Announcement of Newly Approved National Standards No. 11 of 2008 (No. 124 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Chinese standard specifies the grasses seed quality grading indicators and evaluation methods. This standard applies to the production, sale and use of grasses seed quality grading, congeneric species and varieties can be implemented by reference.
GB 6142-2008: Quality grading of the grass seeds
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Quality grading of the grass seeds
ICS 65.020.01
B00
National Standards of People's Republic of China
Replacing GB 6142-1985
Grasses seed quality classification
Posted 2008-06-27
2009-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard 4.3, Chapter 6, are mandatory, the rest are recommended.
This standard replaces GB 6142-1985 "main cultivated grassy pasture seed quality grading."
This standard compared with GB 6142-1985 The main changes are as follows.
--- Modify the standard name;
--- Increasing the normative references (see Chapter 2);
--- Increasing the terms and definitions (see Chapter 3);
--- Rating indicators increased for seed price (see 4.1);
--- Modification and increased testing methods classification indicators (1985 edition Appendix A, this edition 4.2);
--- Modify the 13 kinds of grasses seed quality grading index (1985 Edition Chapter 2, this version 4.3);
--- Increasing the quality classification index 48 kinds of grasses seeds (see 4.3);
--- Increase the quality rating method (see Chapter 5);
--- Increased requirements (see Chapter 6);
--- No longer provided in Appendix (1985 edition Appendix A).
The standard proposed by the People's Republic of China Ministry of Agriculture.
This standard by the National Standardization Technical Committee of animal husbandry.
This standard was drafted. Ministry of Agriculture, forage and turfgrass seed Quality Supervision and Testing Center (Beijing).
The main drafters of this standard. Han Jianguo, SUN Yan, Maopei Sheng Wang
Wen, Ge Ju.
This standard replaces the standards previously issued as follows.
--- GB 6142-1985.
Grasses seed quality classification
1 Scope
This standard specifies the classification of the grass seed quality indicators and assessment methods.
This standard applies to production, sales and grasses used for seed quality grading, belong to approximate plant species and varieties can be implemented by reference.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 2930.1 forage seed testing protocols for sampling
GB/T 2930.2 Clarity analysis for forage seed testing
GB/T 2930.3 forage seed testing other plant seeds Determination
GB/T 2930.4 forage seed germination test inspection procedures
Rules for the inspection GB/T 2930.8 forage seed moisture determination
The inspection of the International Seed Testing Association International Seed
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
The real percentage of value of seeds, also called seed utilization. The formula is.
Seeds price (%) = × Clarity germination rate
4 Quality rating
4.1 Classification principles
Net, germination rate, plant seeds and other four indicators of water quality and comprehensive assessment of the individual classification. When the four classification index
Were more than three, clarity, germination rate is not the same level, with seeds monovalent substituent clarity and germination rate.
4.2 inspection method
For sampling, clarity, germination rate, other plant seeds, moisture measurement method in accordance with GB/T 2930.1, GB/T 2930.2,
GB/T 2930.3, GB/T 2930.4, GB/T 2930.8 and the "international inspection of seed."
4.3 Quality rating
Grasses seed quality is divided into primary, secondary and tertiary, Table 1 shows the classification of the grass seed quality indicators.
Table 1 of the grass seed quality classification
No. Chinese name generic level
Cleaness/%
Germination rate/%
Seeds price /%
Other seeds
D/(tablets/kg)
Moisture /%
1 Yu Mao
(Linn.) Keng
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 70 85.0 59.5 3000 11.0
2 wheatgrass
(Linn.) Gaertn.
A 95.0 90 85.5 11.0 2000
Two 90.0 85 11.0 76.5 3000
Three 80 85.0 68.0 5000 11.0
3 Agropyron
(Fisch.) Schult.
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
4 sand reed
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
6 creeping bentgrass
Linn.
A 95.0 85 88.2 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
7 prairie Alopecurus
Linn.
A 95.0 80 76.0 11.0 2000
Two 90.0 75 11.0 67.5 3000
Three 70 85.0 59.5 5000 11.0
8 yellow Mao
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
9 oat grass
(Linn.) Presl
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
A 98.0 90 88.2 200 12.0
Two 95.0 85 80.7 500 12.0
Three 80 90.0 72.0 1000 12.0
11 carpet grass
(Swartz) Beauv.
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
Table 1 (continued)
No. Chinese name generic level
Cleaness/%
Germination rate/%
Seeds price /%
Other seeds
D/(tablets/kg)
Moisture /%
12 flat spike brome
Vahl
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
14 bison grass
(Nutt.) Engelm.
A 95.0 85 80.7 100 12.0
Two 90.0 80 72.0 200 12.0
Three 85.0 75 63.7 300 12.0
A 95.0 80 76.0 11.0 2000
Two 90.0 75 11.0 67.5 3000
Three 70 85.0 59.5 5000 11.0
A 95.0 80 76.0 11.0 2000
Two 90.0 75 11.0 67.5 3000
Three 70 85.0 59.5 5000 11.0
17 bermudagrass
(L.) Pers.
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
A 95.0 80 76.0 11.0 1000
Two 90.0 75 67.5 11.0 2000
Three 70 85.0 59.5 3000 11.0
19 barnyard
(L.) Beauv.
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
Mexico Class
corn
Schrad.
A 98.0 85 83.3 100 12.0
Two 95.0 80 76.0 300 12.0
Three 90.0 75 67.5 500 12.0
21 Elymus
Turcz.
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
Table 1 (continued)
No. Chinese name generic level
Cleaness/%
Germination rate/%
Seeds price /%
Other seeds
D/(tablets/kg)
Moisture /%
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
24 E.elongata
(Host) Nevski
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
25 Weeping Lovegrass
(Schrad.) Nees
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
26 Centipedegrass
A 98.0 85 83.3 11.0 1000
Two 95.0 80 76.0 11.0 2000
Three 75 90.0 67.5 3000 11.0
27 tall fescue
Schreb.
A 98.0 90 88.2 11.0 1000
Two 95.0 85 80.7 11.0 2000
Three 80 90.0 72.0 3000 11.0
A 98.0 85 83.3 11.0 1000
Two 95.0 80 76.0 11.0 2000
Three 90.0 75 67.5 3000 11.0
29 oxtail grass
Huds.
A 98.0 85 83.3 11.0 1000
Two 95.0 80 76.0 11.0 2000
Three 75 90.0 67.5 3000 11.0
A 98.0 90 88.2 11.0 1000
Two 95.0 85 80.7 11.0 2000
Three 80 90.0 72.0 3000 11.0
31 fescue ryegrass
(K.Richt.) A. Camus
A 98.0 90 88.2 11.0 1000
Two 95.0 85 80.7 11.0 2000
Three 80 90.0 72.0 3000 11.0
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
33 Bouton barley
Wilensky
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
Table 1 (continued)
No. Chinese name generic level
Cleaness/%
Germination rate/%
Seeds price /%
Other seeds
D/(tablets/kg)
Moisture /%
34 wild barley
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
A 98.0 90 88.2 300 12.0
Two 95.0 85 80.7 500 12.0
Three 80 90.0 72.0 1000 12.0
36 chinensis
(Trin.) Tzvel.
A 95.0 80 76.0 11.0 2000
Two 90.0 70 11.0 63.0 3000
Three 60 85.0 51.0 5000 11.0
Perennial black
Straw
A 98.0 90 88.2 11.0 1000
Two 95.0 85 80.7 11.0 2000
Three 80 90.0 72.0 3000 11.0
More than 38 Italian ryegrass
Lam.
A 98.0 90 88.2 11.0 1000
Two 95.0 85 80.7 11.0 2000
Three 80 90.0 72.0 3000 11.0
39 Great Millet
Jacq.
A 95.0 65 61.7 500 12.0
Two 90.0 60 54.0 1000 12.0
Three 55 85.0 46.7 2000 12.0
40 Paspalum barnyard
Poir.
A 95.0 80 76.0 500 11.0
Two 90.0 75 67.5 1000 11.0
Three 70 85.0 59.5 2000 11.0
41 Baja paspalum
Flüggé
A 98.0 80 78.4 500 11.0
Two 95.0 75 71.2 1000 11.0
Three 90.0 70 63.0 2000 11.0
Flower hair flower
Paspalum
Steud.
A 95.0 80 76.0 500 11.0
Two 90.0 75 67.5 1000 11.0
Three 70 85.0 59.5 2000 11.0
43 latifolia paspalum
Hack.
A 95.0 80 76.0 500 11.0
Two 90.0 75 67.5 1000 11.0
Three 70 85.0 59.5 2000 11.0
Bajra (pearl
millet)
(L.) R. Br.
A 98.0 90 88.2 500 11.0
Two 95.0 85 80.7 11.0 1000
Three 80 90.0 72.0 2000 11.0
Table 1 (continued)
No. Chinese name generic level
Cleaness/%
Germination rate/%
Seeds price /%
Other seeds
D/(tablets/kg)
Moisture /%
45 "Grass
L.
A 95.0 85 76.0 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 70 85.0 59.5 5000 11.0
A 98.0 85 83.3 11.0 2000
Two 95.0 80 11.0 76.0 3000
Three 75 90.0 67.5 5000 11.0
A 96.0 85 81.6 11.0 2000
Two 93.0 80 74.4 3000 11.0
Three 75 90.0 67.5 5000 11.0
A 96.0 85 81.6 11.0 2000
Two 93.0 80 11.0 74.4 3000
Three 75 90.0 67.5 5000 11.0
49 Psathyrostachys
(Fisch.) Nevski
A 95.0 85 80.7 11.0 1000
Two 90.0 80 72.0 11.0 2000
Three 75 85.0 63.7 3000 11.0
50 North Puccinillia
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
51 tenuiflora
(Turcz.) Scribn. &
Merr.
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
52 Puccinillia
(L.) Parl.
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
53 Qinghai Roegneria
Keng
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
54 awnless Roegneria
Keng
A 95.0 85 80.7 11.0 2000
Two 90.0 80 11.0 72.0 3000
Three 75 85.0 63.7 5000 11.0
A 98.0 90 88.2 300 12.0
Two 95.0 85 80.7 500 12.0
Three 80 90.0 72.0 1000 12.0
Table 1 (continued)
No. Chinese name generic level
Cleaness/%
Germination rate/%
Seeds price /%
Other seeds
D/(tablets/kg)
Moisture /%
56 African foxtail
Massey
A 95.0 80 76.0 11.0 1000
Two 90.0 75 67.5 11.0 2000
Three 70 85.0 59.5 3000 11.0
57 Sudangrass
(Piper) Stapf
A 98.0 90 88.2 100 12.0
Two 95.0 85 80.7 300 12.0
Three 90.0 80 72.0 500 12.0
Su 58
Beauv.
A 98.0 90 88.2 500 12.0
Two 95.0 85 80.7 12.0 1000
Three 80 90.0 72.0 2000 12.0
Sorghum Sudan Grass
Hybrids
(Piper) Stapf
A 98.0 90 88.2 200 12.0
Two 95.0 85 80.7 300 12.0
Three 90.0 80 72.0 500 12.0
60 krylovii
Roshev.
A 95.0 80 76.0 11.0 1000
Two 90.0 75 67.5 11.0 2000
Three 70 85.0 59.5 3000 11.0
A 98.0 90 88.2 200 12.0
Two 95.0 85 80.7 300 12.0
Three 90.0 80 72.0 500 12.0
A 98.0 90 88.2 100 14.0
Two 95.0 85 80.7 200 14.0
Three 90.0 80 72.0 300 14.0
63 Zoysia
Steud.
A 98.0 80 78.4 500 11.0
Two 95.0 75 71.2 1000 11.0
Three 90.0 70 63.0 2000 11.0
5 quality rating method
5.1 rating individual indicators according to Table 1 Clarity, germination rate, other plant seeds, water, three or less was substandard.
5.2 comprehensive grading according to Table 1 with the cleanness, germination rate, other plant seeds, water four indicators.
5.2.1 The four indicators in Table 1, the same quality level, the direct classification.
5.2.2 there is a four indicators in the following three levels as substandard.
5.2.3 The four indicators were more than three (including three), in which the germination rate and clarity when not on the same level, first calculate the price of seeds, with seeds
Valence substitution clarity and germination rate. Seeds at the same level, press the rating level with price and other plant seeds; if not at the same level,
By low-grade rating.
6 Requirements
Seeds should not have quarantine plant seeds.
......
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