GB/T 29379-2021Code of practice for virus free seed potatoes storage and transportation (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Principles of Standardization Documents" Drafting.

This document replaces GB/T 29379-2012 "Technical Regulations for Storage and Transportation of Virus-Free Potato Seed Tubes", and is consistent with GB/T 29379-2012 In addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) The definition of defective potatoes has been changed, deformities have been deleted, and collision injuries have been added (see 3.1, 2012 version 3.1);

b) The structure of post-harvest treatment has been changed, divided into two parts. "field treatment" and "pre-storage treatment" (see 4.1, 4.2, 2012 edition Chapter 4);

c) The textual expression of "respectively warehousing or transportation according to varieties, grades and specifications" (see 4.1.3, 4.4 and 5.1 of the 2012 edition) is changed, and the Added "direct transportation or storage" after field harvest (see 4.1.3);

d) Added the content of the forced ventilation library (see 4.2.2, 7.1, 8.3).

e) Added the content of the logo. "Variety Registration Number", "Name of Seed Producer and Operator", "Quarantine Certificate Number", etc. (see 5.2);

f) Deleted the relative humidity index requirements during transportation (see 6.4 in the 2012 edition);

g) Added "multiple varieties of different color packaging or effective isolation measures for the same vehicle transportation" (see 6.5);

h) Added the content of storage preparation "should be ventilated under dry conditions for 10 to 15 days" (see 7.4);

i) The description of disinfection and recording in the preparation of the storage warehouse has been changed, new agents have been added, and unused or harmful agents have been deleted (see 7.5, 7.4 in the 2012 edition);

j) The text description of storage period management has been changed (see 9.2.1, 9.2.3, 9.2.4, 9.2.1, 9.2.4 and 9.2.5 of the 2012 edition), revised Meet the indicator requirements (see 9.2.2, 9.2.4);

k) Deleted the textual description of the specific requirements for the ventilation of seed potato stacks (see 9.2.3 of the 2012 edition);

l) Changed the textual description of management before delivery and revised the index requirements (see 9.3.1, 9.3.1 of the 2012 edition).

1 Scope

This document specifies the post-harvest handling, packaging, labeling, transportation, storage preparation, storage volume and stacking, and storage of virus-free potato seed potatoes. Technical requirements such as Tibetan management.

This document is applicable to the storage and transportation of virus-free seed potatoes.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB 18133 Potato seed potatoes

GB 20464 General rules for the labeling of crop seeds

3 Terms and definitions

The following terms and definitions apply to this document.

4 Post-harvest treatment

5 Packaging and marking

5.1 Use packaging with good air permeability, and it is advisable to use sack, woven bag, mesh bag, rigid box, etc. The packaging should be intact and sterilized.

5.2 The packaging should be labeled and meet the requirements of GB 20464. Indicate the variety name, grade, place of origin, variety registration number, seed production Operator's name, harvest date, seed production and operation license number and quarantine certificate number, etc.