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Potato Aphid


The Potato aphid Macrosiphum euphorbiae is often the most numerous of the five or six species of aphids that regularly colonize potato crops in Scotland. It is also a potential aphid vector of non-persistent potato viruses (e.g. PVY, PVA).

As with Peach-Potato aphids Myzus persicae, early season predictions made following the 2014-2015 winter indicated that Potato aphid flights should be close to that of an average year.  Therefore, the total catches of Potato aphids were expected to be relatively average and the risk of virus transmission to potato crops should be no greater than normal. However, environmental conditions over the early summer do influence population development, and catches were below average, particularly at Dundee and Edinburgh.

Table

 M. euphorbiae Elgin Dundee Edinburgh
First catch 2015 20 June 22 June 4 June
First catch prediction 2015 N/A 31 May 20 May
Mean date of first catch 14 June 1 June 24 May
Catch to 31 July 2015 14 9 13
Predicted catch to 31 July 2015 N/A N/A N/A
Mean catch to 31 July 18 76 58

 

Potato aphids in 2015

42 potato aphids have been caught so far in 2015 - this total to 16 August ranks 31st out of the last 32 years.

  



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Book | by Dr. Radut