MINIMUM TOLERANCES FOR BASIC SEED POTATOES INTENDED FOR MARKETS OUTSIDE THE EUROPEAN COMMUNITY
The tolerances below will be applied unless the importing country's requirements are stricter.
| Disease, pest, damage or defect | Individual tolerance 1 | Individual allowable surface area cover | Group tolerance 1 | Collective tolerance groups II, III & IV |
|---|
| GROUP I | | | NIL | |
| Wart disease | NIL | - | | |
| Potato tuber eelworm | NIL | - | | |
| Potato cyst nematodes | NIL | - | | |
| Ring rot | NIL | - | | |
| Brown rot | NIL | - | | |
| Potato tuber moth | NIL | - | | |
| Potato Spindle Tuber Viroid | NIL | - | | |
| Colorado beetle | NIL | - | | |
| GROUP II | | | 0.2% | |
| Rots including Blight | 0.2% | - | | |
| Blackleg/bacterial soft rot (Pectobacterium spp.) | 0.2% | - | | |
| Blackleg/bacterial soft rot (Dickeya spp.) | 0.0% | - | | |
| Gangrene/Dry rot/Wet rot | 0.2% | - | | |
| GROUP III | | | 1.5% | |
| Skin spot | 0.5% | 12.5% | | |
| Black scurf | 1.5% | 12.5% | | |
| Common scab | 1.5% | 12.5% | | |
| Powdery scab | 1.5% | 12.5% | | |
| GROUP IV | | | 3.0% | |
| Externally blemished or atypically shaped tubers 2 | 1.0% | - | | |
| Superficial necrosis by PVY | 0.1% | - | | |
| External necrosis by other viruses | 2.0% | - | | |
| | | | 4.7% |
| GROUP V | | | 0.5% | |
| Dirt or other extraneous matter | 0.5% | - | | |
1 Tolerances are by weight
2 Includes tubers wrinkeled or dehydrated due to silver scurf ( Helminthosporium solani)