2005/2006 SURVEY: SPRING/SUMMER PEST ASSESSMENT 2006
| Unsprayed crops at mid-late flowering were inspected for Cabbage Seed Weevil and Cabbage Aphid. 14 sites were sprayed following the first assessment and we were unable to replace them with other sites in time for the second assessment. | |||||||||||||||||||||||||||||
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It is after the mid-late flowering growth stage that the Cabbage Seed Weevil begins laying its eggs on the pods. Cabbage aphid populations should also be visible at this growth stage if they are going to cause a problem. |
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Thresholds Published thresholds are 2 per plant, unless the site has a history of Brassica Pod Midge problems. If this is the case the threshold drops to 1 per plant.
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