All entries for Thursday 25 July 2013

Insects on brassicas at Wellesbourne

Pest activity is now starting to take off on the brassica plots at Wellesbourne. The pests include:

• Cabbage aphids
• Large white butterfly and small white butterfly eggs
• Garden pebble moth (Evergestis forficalis) caterpillars - which have caused a lot of damage to 5-6 adjacent plants in a Brussels sprout plot

Some of the cabbage aphids have been parasitised and they are also being consumed by ladybirds and hover fly larvae.

Here are some images.

Rosemary Collier : 25 Jul 2013 22:26 |  Comments (0) |  Close comments |  Report a problem

Wellesbourne update

Today we found:

• 28 carrot flies - 3 traps
• 209 cabbage root fly eggs (15 plants)
• 16 bean seed flies - 3 traps
• 20 flea beetles, 39 pollen beetles, 1 large white butterfly, 1 small white butterfly
• 1 turnip moth - 2 traps
• 6 silver Y moths - 2 traps

Conditions are favourable for foliar pests of brassica crops - aphids, caterpillars, flea beetles - and all are evident on plots at Wellesbourne.

Rosemary Collier : 25 Jul 2013 17:53 |  Comments (0) |  Close comments |  Report a problem