Trap Catches Identified to September 11, 2020.

Aphid vector captures were down at all locations this week; the cooler temperatures slowing down reproduction and movement.  There were a total of 63 individual aphids from 11 different species as compared to 172 aphids from 16 vector species last week.  Still, there does seem to be several species well represented in the area.

Green peach aphids are still present, 7 being recovered from 4 locations (Humboldt, Sabin and Perham all reported GPA).  Soybean aphid numbers are lower this week, as are numbers of small grain aphids.   Thistle aphids have decreased but are still present, and buckthorn aphid numbers remain steady as they migrate back to their overwintering host.

Overall, this is an expected week, with the season winding down, many fields already vine-killed and harvest underway.  We hope all's going well for everyone in the field.

As today is 9/11, lets also take a moment to remember those brave individuals who run towards danger in order to safeguard us all. 

As always, keep on scouting!

Click on any image below for full-scale version.

Cumulative PVY Vector Risk Index to September 11, 2020.

    

Cumulative PVY Vector Risk Index to September 09, 2019 season (for comparison)

Aphid Species Capture and PVY Vector Risk Index for the week ending September 04, 2020

Cumulative Aphid Species Capture and PVY Vector Risk Index to September 11, 2020.