UNECE Guide to Seed Potato Lot Inspection
Recommended Practices
Abstract
This Guide refers to the UNECE STANDARD S-1, concerning the marketing and commercial quality control of Seed Potatoes. Knowledge of the relevant requirements is essential for the inspector. Inspection is the visual examination of plants, tubers, containers, equipment or facilities by an authorized person, to determine compliance with regulations. Confirmation of symptoms can be supported by laboratory testing, if necessary.
© United Nations
Table of Contents
Introduction
Scope of lot inspection
Training
Information available to the inspector
Bio-Security
Sampling
Reasons to stop tuber inspection
Records of inspection
Containers
Identification and labelling
Origin
Tuber size
Faults as external defects and disorders
Faults as internal defects and disorders
Dry rot, wet rot and wet breakdown
Calculation of results
Additional measures
Second-opinion inspections
References
Photos
Annexes
Defects not in “UNECE guide to seed potato diseases, pests and defects, 2014”
Minimum quality conditions for lots of seed potatoes (Annex III of the UNECE standard)
Assessment key for percentage tuber surface area coverage of blemish disease (Annex VIII of UNECE standard)
Countable tubers for Rhizoctonia (Annex VIII of the UNECE standard)
Example of sealing methods for bulk containers
Scope of lot inspection
Training
Information available to the inspector
Bio-Security
Sampling
Reasons to stop tuber inspection
Records of inspection
Containers
Identification and labelling
Origin
Tuber size
Faults as external defects and disorders
Faults as internal defects and disorders
Dry rot, wet rot and wet breakdown
Calculation of results
Additional measures
Second-opinion inspections
References
Photos
Annexes
Defects not in “UNECE guide to seed potato diseases, pests and defects, 2014”
Minimum quality conditions for lots of seed potatoes (Annex III of the UNECE standard)
Assessment key for percentage tuber surface area coverage of blemish disease (Annex VIII of UNECE standard)
Countable tubers for Rhizoctonia (Annex VIII of the UNECE standard)
Example of sealing methods for bulk containers
