All entries for Saturday 27 July 2019

AHDB Aphid News

The latest edition of AHDB Aphid Newshas been released for the week ending 21st July.

• Peach–potato aphid numbers have decreased to half of the previous week. A hotspot at Dundee remains but numbers are declining.
• Potato aphid numbers have decreased to 60% of last week, increasing at only three sites.
• Cabbage aphid numbers also declined to two thirds of last week, with a further decline in the hotspot at Writtle.
• Single currant–lettuce aphids were captured at Writtle and Starcross.
• Willow–carrot aphid numbers decreased to a quarter of last week, increasing at only Silwood Park and Starcross.
• Pea aphid numbers decreased to around 20% of last week, increasing at only Newcastle.
• Total numbers of black bean aphids have decreased to around 40% of last week. There was, however, an increase at York and a hotspot at Starcross.

Rosemary Collier : 27 Jul 2019 08:18 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

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

• 10 male and 54 female cabbage root flies
• 61 bean seed flies
• 28 flea beetles
• 453 pollen beetles
• 92 cabbage stem weevils
• 270 cabbage stem flea beetles
• 0 cabbage seed weevils

There were 360 carrot flies on the 3 sticky traps in the new plot for 2019.

122 cabbage root fly eggs were laid between 23 and 26 July (around 15 plants).

2 diamond-back moths, no turnip moths, no silver Y moths and no cabbage moths were captured in pheromone traps. There are 2 traps for each species.

We also caught 4 diamond-back moths on 5 carrot fly traps.

Rosemary Collier : 27 Jul 2019 08:13 |  Comments (0) |  Close comments |  Report a problem