Figure: 4 TAC §10.50(a)
All Certified Seed | |
Grade Defect for Tubers | Maximum % |
Stem end discoloration | 5.0 |
Net Necrosis (Leafroll, after laboratory identification) | 0.5 |
Net Necrosis (aster yellows) | 2.0 |
Bacterial Ring Rot | 0 |
Root Knot Nematode (visible tuber symptoms) | 0 |
Corky Ring Spot (visible tuber symptoms coupled with confirmation of Tobacco Rattle Virus presence by accepted laboratory test) |
0 |