All entries for May 2015

Aphid bulletins

The latest editions of the Rothamsted Suction Trap Bulletin and AHDB Aphid News are attached. The information of interest to vegetable and salad growers is as follows:

ahdb_aphid_news_20150529.pdf bulletin_07_2015.pdf

Rosemary Collier : 29 May 2015 15:14 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Today we found:

• 0 male and 8 female cabbage root flies (3 water traps)
• 35 bean seed flies (3 traps)
• 94 carrot flies (3 traps) in our new carrots
• 1 pollen beetle
• 1 cabbage stem weevil
• 62 cabbage root fly eggs (15 cauliflower plants)
• 3 turnip moths (2 traps) - first of the year

Rosemary Collier : 29 May 2015 14:18 |  Comments (0) |  Close comments |  Report a problem

FV 416b cabbage root fly egg counts in Cornwall

The egg counts up to Monday 25th May are as follows - they show the mean numbers of eggs found around a sample of 20 plants per location:

Rosemary Collier : 26 May 2015 22:12 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Today we found:

• 1 male and 15 female cabbage root flies (3 water traps)
• 56 bean seed flies (3 traps)
• 178 carrot flies (3 traps) in our new carrots
• 1 flea beetle
• 1 pollen beetle
• 1 cabbage stem weevil
• 107 cabbage root fly eggs (15 cauliflower plants)

Rosemary Collier : 26 May 2015 22:07 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Today we found:

• 3 male and 22 female cabbage root flies (3 water traps)
• 156 bean seed flies (3 traps)
• 119 carrot flies (3 traps) in our new carrots
• 1 flea beetle
• 67 cabbage root fly eggs (15 cauliflower plants)

Rosemary Collier : 22 May 2015 15:50 |  Comments (0) |  Close comments |  Report a problem

Aphid bulletins

The latest editions of the Rothamsted Suction Trap Bulletin and AHDB Aphid News are attached. The information of interest to vegetable and salad growers is as follows:

• The peach–potato aphid has been caught at six sites in southern and eastern England this week, including a first arrival at Silwood within a few days of both the 10-year average and the forecast.

• The potato aphid has been caught at four sites this week in low numbers, and found on lettuce in Kent.

• Numbers of the willow ̶ carrot aphid (Cavariella aegopodii) have increased this week, with highest numbers in south eastern England.

• The first mealy cabbage aphid (Brevicoryne brassicae) caught in our UK traps this year turned up at Writtle this week, almost two weeks earlier than the 10-year average.

• Five pea aphids (Acyrthosiphon pisum) were caught this week across three sites in southern England.

• The black bean aphid (Aphis fabae) has been caught at six sites this week.

• This week’s suction trap catches were dominated by a big flight of sycamore aphids.

ahdb_aphid_news_20150522.pdf bulletin_06_2015.pdf

Rosemary Collier : 22 May 2015 15:45 |  Comments (0) |  Close comments |  Report a problem

Willow–carrot aphid

We counted the numbers of willow-carrot aphids on our new carrots at Wellesbourne on 7th May and found 5 winged and 2 wingless aphids on 3 x 0.5 m lengths of row of carrot. Today there were 22 winged and 18 wingless aphids.

Rosemary Collier : 21 May 2015 16:17 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Yesterday we found:

• 1 male and 22 female cabbage root flies (3 water traps)
• 156 bean seed flies (3 traps)
• 124 carrot flies (3 traps) in our overwintered carrots - flies emerging from pupae in the soil
• 100 carrot flies (3 traps) in our new carrots - flies arriving from emergence site
• 2 flea beetles
• 86 cabbage root fly eggs (15 cauliflower plants)

Rosemary Collier : 19 May 2015 09:58 |  Comments (0) |  Close comments |  Report a problem

HDC project FV 416b – cabbage root fly egg counts in Cornwall

The egg counts up to Monday 18th are as follows - they show the mean numbers of eggs found around a sample of 20 plants per location:

Rosemary Collier : 19 May 2015 08:05 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Yesterday we found:

• 9 male and 13 female cabbage root flies (3 water traps)
• 144 bean seed flies (3 traps)
• 240 carrot flies (3 traps) in our overwintered carrots - flies emerging from pupae in the soil
• 152 carrot flies (3 traps) in our new carrots - flies arriving from emergence site
• 1 pollen beetle, 5 flea beetles, 1 cabbage stem weevil (3 traps)
• 22 cabbage root fly eggs (15 cauliflower plants)

Rosemary Collier : 16 May 2015 06:52 |  Comments (0) |  Close comments |  Report a problem