All entries for Friday 21 June 2019

AHDB Aphid News

The latest edition of AHDB Aphid Newshas been released for the week ending 16th June.

• Peach–potato aphids decreased to half of that of last week, but with numbers still rising at sites in Northern Britain, as well as at Starcross.
• Potato aphid numbers also halved across much of Britain, apart from Dundee, Newcastle and Kirton
• Cabbage aphid numbers increased at five sites, but total numbers are down to a third of last week.
• Single currant–lettuce aphids were captured at Rothamsted and Starcross.
• Willow–carrot aphid numbers declined to around 40% of last week across all sites, except Starcross
• Pea aphid numbers increased at seven sites, reaching double figures at three.
• Black bean aphid numbers have increased substantially at seven sites, with a hotspot at Silwood Park.

Rosemary Collier : 21 Jun 2019 20:19 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

When the water traps in the swede plot were checked today there were:

• 4 male and 3 female cabbage root flies
• 25 bean seed flies
• 0 flea beetles
• 3650 pollen beetles
• 25 cabbage stem weevils
• 0 cabbage stem flea beetles
• 0 cabbage seed weevils
  

There were 15 carrot flies on the 3 sticky traps in the new plot for 2019.

59 cabbage root fly eggs were laid between 18 and 21 June (around 15 plants).

6 diamond-back moths and 1 turnip moth were captured. No moths were captured in our other pheromone traps (silver Y moth, cabbage moth, diamond-back moth). There are 2 traps for each species.

We also caught 12 diamond-back moths on 6 carrot fly traps, 3 of which are in our carrots (above) and 3 are in the swede plot and are baited with a pheromone lure (experimental).

Rosemary Collier : 21 Jun 2019 20:15 |  Comments (0) |  Close comments |  Report a problem