Summary information for 02-09-2020 through to 10-09-2020

Sample data for 02-09-2020 through to 10-09-2020

Region Samples Mean PVY Index per Sample Mean Colonising Aphids per Sample Mean Aphids per Sample Total aphid species
Grampian 4 3.57 1.50 10.25 7
East Anglia 2 0.06 0.00 2.50 4
TOTAL 6 2.40 1.00 7.67 9

Sample data for 2020

Region Samples Mean PVY Index per Sample Mean Colonising Aphids per Sample Mean Aphids per Sample Total aphid species
North Scotland 147 1.42 0.69 4.50 43
Grampian 200 3.61 2.37 8.91 54
Angus & Perthshire 102 1.21 0.37 4.69 49
Borders 82 3.92 3.39 7.05 42
Northern England 173 25.05 18.38 38.24 61
Midlands 100 120.30 115.90 150.43 60
East Anglia 165 147.21 142.23 172.12 65
South-West 88 8.14 7.45 16.73 50
TOTAL 1057 40.44 37.64 52.06 97

View a regional breakdown of the sites with the greatest PVY index

Summary information as of 10-09-2020

  • Grampian (4 samples) - Moderate Risk
  • East Anglia (2 samples) - Low Risk

  • This report covers samples taken between 2nd and 9th September.
  • 1063 samples have been received so far this year.
  • Samples have only been received from Grampian and East Anglia for this period.
  • Peach-Potato Aphids have been found in samples from Grampian.
  • Potato Aphids have not been found in any samples this week.
  • Black-Bean Aphids were found in samples from Grampian and East Anglia - this species is a good vector of PVA.
  • Grain Aphid was again recorded from Grampian.
  • Bird Cherry-Oat Aphid was found again in Grampian.
  • Cabbage Aphids were found in East Anglia this week.
  • Shallot Aphid was found in Grampian this week.

  • North Scotland: No samples received.
  • Grampian: Virus pressure remained moderate. Peach-Potato Aphids were found at 2 sites. No Potato Aphids were found. Other potato virus vectors found: Bird Cherry-Oat Aphid, Black-Bean Aphid, Grain Aphid, Shallot Aphid.
  • Angus and Perthshire: No samples received.
  • Borders: No samples received.
  • Northern England: No samples received.
  • Midlands: No samples received.
  • East Anglia: Virus pressure was low. No Peach-Potato Aphids or Potato Aphids were found. Other potato virus vectors found: Cabbage Aphid, Black-Bean Aphid.
  • South West: No samples received.

Very few samples were received over the last week as most crops have finished, so this will be the last report for this season. Please do keep checking the website though, as we will continue to report results from any samples we receive. Virus pressure, although moderate, is now average for the time of year in Grampian, whilst very low in East Anglia, but could still cause problems for any regrowth. Thank you all for taking part in what has been a challenging growing season, I hope you all have a good harvest and that the information has been of benefit to you. Stay safe!

Along with the results from your aphid trap you need to take into account the following factors when considering the risk of virus spread.