Disease Resistance Codes
Some tomato varieties are developed to be resistant to certain diseases and pests. Codes may be listed with the tomato information. Here is a list of some codes that you may see. For more details about some that may apply to our area, see the article Decoding Tomato Disease Resistance Codes.
AB – Alternarium Blight
A or AS – Alternarium Stem Canker
CRR – Corky Root Rot
EB – Early Blight
F – Fusarium Wilt
FF – Fusarium races 1 & 2
FFF – races 1, 2, & 3
FOR – Fusarium Crown and Root Rot
GLS – Gray Leaf Spot
LB – Late Blight
LM – Leaf Mold
N – Nematodes
PM – Powdery Mildew
S – Stemphylium Gray Leaf Spot
T or TMV – Tobacco Mosaic Virus
ToMV – Tomato Mosaic Virus
TSWV – Tomato Spotted Wilt Virus
V – Verticillium Wilt Virus