Rothamsted suction trap captures week ending 27th April

One particularly good day out of seven during Bulletin Week 4: 21/4-27/4 was enough to ratchet up the aphids caught in the suction-trap samples ahdb_aphid_news_20140502.pdf.

• Ten peach-potato aphids were caught this week (Broom’s Barn 5, Writtle, 1 Wye 3, Starcross 1).
• Seven potato aphids were caught including first arrivals at Elgin, Writtle and Wye, all earlier that the 10-year means.
• First arrivals of pea aphid at 3 new sites ties in with field reports of pea aphids at low levels in pea and bean crops.
• The first cabbage aphid this year was caught at Wye and coincides with a field report of cabbage aphids in rape in Kent
• The spring migration of willow carrot aphid got underway this week with 5 new arrivals. This ties in the HDC Pest Bulletin willow-carrot aphid forecast.

Aphids in general are appearing much earlier that average and in line with the predictions made in early March.

Rosemary Collier : 03 May 2014 07:02 |  Comments (0) |  Report a problem