Brassicas

Disease control programmes for brussels sprouts, cabbage, broccoli/calabrese and cauliflower crops.

Example programmes

Brussels sprouts
No disease at T1:

rudis/nativo alternation1

If white blister present, add a specific oomycete curative fungicide, such as Infinito, to control the disease.

Autumn/winter cabbage
Disease at T1:

rudis/nativo alternation2

Application:

  Rudis Nativo 75WG
Rate of use: 0.4 L/ha 0.36 kg/ha
Max number of doses per crop: 3 2

The first application is recommended before disease establishes in the crop. Follow with further applications of Rudis or Nativo 75WG at a typical spray interval of 21 days. A minimum of 21 days between applications is required when using the same product in a block spray. Apply Nativo 75WG at the end of a programme for lasting crop protection and better storage.

As part of a disease resistance management strategy, Nativo 75WG and Rudis should be used in a fungicide spray programme with other products based on different classes of chemistry.

Brassica leaf spot disease (Alternaria species, Mycosphaerella brassicicola) control:

For control of these diseases or for curative activity against other target diseases, mixing Rudis or Nativo 75WG with an approved sticker/wetter adjuvant may enhance their activity.

White blister (Albugo candida) control:

Nativo 75WG provides useful protection against white blister; for established infections use a specific oomycete curative fungicide such as Infinito (EMAU 20140555). Mix Rudis with an oomycete curative fungicide for control.

New transplants:

Allow to establish before applying Nativo 75WG; there is potential for some growth regulation seen principally as a transient reduction in vigour of young plants.

Resistance management:

Nativo 75WG contains trifloxystrobin, a member of the Qol group. In accordance with FRAC guidelines for pre-mix Qol fungicides, the number of applications of Qol-containing products should be no more than 50% of the spray programme.

Rudis contains prothioconazole, a member of the DMI group.

Use Rudis and Nativo 75WG as part of an Integrated Crop Management (ICM) strategy incorporating other methods of control, including where appropriate other fungicides with a different mode of action.