All entries for Friday 26 May 2017

Pest update from Wellesbourne

Between Tuesday and today we caught:

On 3 sticky traps in each of our carrot plots:

• 38 carrot flies - overwintered carrots
• 303 carrot flies - spring-sown carrots

In 4 water traps - 3 near our overwintered swede plot and 1 near some oil seed rape:

• 0 male cabbage root flies and 3 females
• 5 bean seed flies
• 467 pollen beetles
• 179 flea beetles
• 40 cabbage stem weevils
• 51 cabbage seed weevils
• 3 cabbage stem flea beetles

We also recovered 6 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 1 diamond-back moth 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 - two more caught today!

Rosemary Collier : 26 May 2017 22:13 |  Comments (0) |  Close comments |  Report a problem

AHDB Aphid News

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

• Peach–potato aphids (Myzus persicae) have been caught throughout much of England in both the suction traps and the yellow water traps. Tests show these migrants are carrying high levels of Turnip yellows virus.
• Low numbers of the mealy cabbage aphid were caught less widely in both suction traps and the yellow water traps.
• Currant-lettuce aphids (Nasonovia ribisnigri) were caught at Writtle and Wye this week.
• The willow–carrot aphid is flying throughout England, with numbers increasing significantly at most suction-trap sites and with highest numbers at York (208), Kirton (184), Broom’s Barn (162) and Hereford (245).
• Numbers of parsnip aphids also increased, particularly in central England
• A few black bean aphids have been caught, but no field reports yet.

Rosemary Collier : 26 May 2017 15:26 |  Comments (0) |  Close comments |  Report a problem