Canola, Forage brassica – Diamondback moth, cabbage moth

Crop(s):          Canola, Forage brassica

Insect:              Diamondback moth, Cabbage moth (Plutella xylostella)

Guidelines:

1. For information refer to the IPM guidelines: https://ipmguidelinesforgrains.com.au/ipm- information/resistance-management-strategies/

Notes regarding the application of insecticide:

1. To ensure the most effective control of the pest:
   1. Product labels should at all times be carefully read and adhered to;
   2. Full recommended rates of registered insecticides should always be used; and
   3. Ensure good coverage of the target area to maximise contact

To help prevent the development of resistance to any one specific active ingredient (see table below), observe the following instructions:

1. Apply a specific active ingredient using a ‘window’ approach to avoid exposure of consecutive insect pest generations to the same mode of action. Multiple successive applications of a specific active ingredient are acceptable if they are used to treat a single pest generation.
2. Following a ‘window’ of a specific mode of action product, rotate to a ‘window’ of applications of effective insecticides with a different mode of action.
3. The total exposure period of any one mode of action ‘active window’ applied throughout the crop cycle (from seedling to harvest) should not exceed 50% of the crop cycle.
4. Incorporate IPM techniques into the overall pest management program
5. Consider the impact on beneficial insects. Consult the Cesar Australia Beneficials Chemical Toxicity table: https://cesaraustralia.com/resources/beneficials-toxicity-table/
6. Monitor insect populations for loss of field efficacy.