Pests
Brassica oleracea L. (Savoy Cabbage Group)
The primary pest of Savoy cabbage is the onion thrips, Thrips tabaci, which causes leaf necrotization and head deformation. There are no pest-resistant varieties, and resistance mechanisms are linked to plant morphological traits.
In the reference 5 varieties crop Savoy cabbage, where this is mentioned in the description.
Light silvery spots form on Savoy cabbage leaves at the feeding sites, which eventually turn brown and undergo necrosis. An important diagnostic sign of infestation is the presence of small black dots—insect excrement—which are clearly visible on the surface of the leaf blades.
Thrips exhibit a cryptic lifestyle, concentrating inside the head between the leaves. Rusty spots, areas of deformed tissue, and callus growths, which eventually turn brown, are frequently found at their localization sites.
Specific resistance genes to Thrips tabaci in Brassica oleracea have not yet been identified. Breeding efforts to increase crop resistance are directed not at identifying genetic markers, but at utilizing morphological traits such as epicuticular wax structure or head density.
General information about the subject — on the page Thrips.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL BV, NL
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
RIJK ZWAAN WELVER GmbH, DE
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Hazera Seeds B.V.
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Rijk Zwaan Zaadteelt en Zaadhandel B.V.