All entries for Friday 24 July 2015
July 24, 2015
Pest update from Wellesbourne
Today we found:
- 9 male and 91 female cabbage root flies (3 water traps)
- 30 bean seed flies (3 traps)
- 34 carrot flies (3 traps) in our new carrots
- 88 cabbage root fly eggs (15 cauliflower plants)
- 71 brassica flea beetles (3 traps)
- 31 pollen beetles (3 traps)
- 2 cabbage stem weevils (3 traps)
- 5 large white butterflies (3 traps)
- 5 small white butterflies (3 traps)
Updated aphid bulletins – captures 13–19 July
The latest editions of the Rothamsted Suction Trap Bulletin and AHDB Aphid News are attached. The information of interest to vegetable and salad growers is as follows:
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Numbers of the peach–potato aphid (Myzus persicae) have fallen again this week, and are now low everywhere.
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The potato aphid (Macrosiphum euphorbiae) was caught in low numbers at eight sites.
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The numbers of the willow ̶ carrot aphid (Cavariella aegopodii) are now low everywhere.
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The mealy cabbage aphid (Brevicoryne brassicae) was caught at ten sites this week, with high numbers at Wellesbourne (855) and Hereford (413).
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Numbers of the pea aphid (Acyrthosiphon pisum) increased at nine sites this week, with accumulated numbers highest at Starcross.
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Numbers of the black bean aphid (Aphis fabae) remain high, but are now decreasing across much of England.
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Numbers of aphid predators (hoverflies, ladybirds and lacewings) are increasing in our trap samples and field reports suggest are now much more common in the field.
ahdb-aphid-news-15-.pdf bulletin_15_2015.pdf