All entries for Friday 09 June 2017

Pest update from Wellesbourne

Between Tuesday and today we caught:

On 3 sticky traps in each of our carrot plots:

• 7 carrot flies - overwintered carrots
• 55 carrot flies - spring-sown carrots

In 3 water traps in a new plot of swedes.

• 1 male cabbage root fly and 2 female
• 35 bean seed flie
• 244 pollen beetles
• 9 flea beetles
• 2 cabbage stem weevils
• 5 cabbage stem flea beetles

We also recovered 2 cabbage root fly eggs from the soil around 15 cauliflower plants.

We set up pheromone traps for silver Y moth, diamond-back moth and turnip moth on 18th April and caught 7 silver Y moths and 5 turnip moths (2 traps per species).

We have also caged some areas planted with narcissus in order to record emergence of large narcissus fly - none caught today!

Rosemary Collier : 09 Jun 2017 16:03 |  Comments (0) |  Close comments |  Report a problem

AHDB Aphid News

The latest edition of AHDB Aphid News has just been released.

• The peach–potato aphid (Myzus persicae) numbers continued to increase this week, with high numbers in the ST (suction trap) at Broom’s Barn and Wellesbourne, as well as very high numbers in the YWT (yellow water trap) in northern England. Tests show that 60-70% of these migrants are carrying Turnip yellows virus.
• The potato aphid (Macrosiphum euphorbiae) and the glasshouse and potato aphid (Aulacorthum solani) have been caught in above average numbers for the time of year in the ST and in a range of YWT.
• Black bean aphids are being caught across the country in low numbers.
• The mealy cabbage aphid was caught in both ST and YWT, with highest numbers in the midlands where it has also been reported from some OSR crops.
• No currant-lettuce aphids (Nasonovia ribisnigri) were caught in the ST this week.
• The willow–carrot aphid migration has started to decline this week, with high ST numbers still at Kirton (255). Numbers of parsnip aphids are high at Wellesbourne and Hereford.

Rosemary Collier : 09 Jun 2017 15:29 |  Comments (0) |  Close comments |  Report a problem