Willow–carrot aphid counts
We've been following the development of overwintering aphid populations on ‘open’ overwintered carrots over the last few years and the table below shows their counts since January. These are numbers per plant.
| Winged | Wingless | Parasitised | |
| 05-Jan | 0.02 | 1.10 | 0.00 |
| 24-Jan | 0.00 | 2.03 | 0.00 |
| 15-Feb | 0.00 | 1.78 | 0.00 |
| 08-Mar | 0.00 | 1.89 | 0.00 |
| 22-Mar | 0.00 | 30.78 | 0.00 |
Rosemary Collier
23 Mar 2022 16:47
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