Willow–carrot aphid update from Wellesbourne
The table below shows the total number of willow-carrot aphids on 3 x 0.5 m lengths of row of carrot plants. Numbers of all stages have decreased since last week.
Date |
Winged aphids |
Wingless aphids |
Parasitised aphids |
15 July |
0 |
186 |
255 |
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